Click here to view [url=http://www.mindat.org/mesg-82-202970.html][b]Pseudomorphs & Replacements A & B[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-225691.html][b]Pseudomorphs & Replacements C[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-202977.html][b]Pseudomorphs & Replacements J to M[/b][/url]. Click here for [url=http://www.mindat.org/mesg-82-225739.html][b]Pseudomorphs & Replacements N to P[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-207865.html][b]Pseudomorphs & Replacements Quartz[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-202976.html][b]Pseudomorphs & Replacements R to Z[/b][/url]. Click here to view [b][url=http://www.mindat.org/msgboard-82.html]Best Minerals P[/url][/b], click here to view and here for [url=http://www.mindat.org/forum.php?tab=65][b]Best Minerals A to Z[/b][/url] and here for [url=http://www.mindat.org/mesg-63-159134.html][b]Fast Navigation of completed Best Minerals articles[/b].[/url] Can you help make this a better article? What good localities have we missed? Can you supply pictures of better specimens than those we show here? Can you give us more and better information about the specimens from these localities? Can you supply better geological or historical information on these localities? [b]Datolite & Quartz after Anhydrite[/b] [b]USA[/b] [b]New Jersey, Passaic Co., Haledon, Braen Quarry (Braen Stone Industry Quarry; Sam Braen Quarry)[/b] [pic id=235310 width=410 float=left]Datolite after Anhydrite 8.1cm wide[/pic] [pic id=316638 width=395 float=center]Datolite after Anhydrite 5.4cm wide[/pic] [pic id=196158 width=400 float=left]Datolite & Quartz after Anhydrite ~14cm[/pic] [pic id=196159 width=400 float=center]Datolite after Anhydrite ~14cm wide[/pic] [pic id=316639 width=400 float=left]Datolite after Anhydrite 5.4cm wide[/pic] Many of these pseudomorphs may be somewhat complex. It may be that most of them were originally crystals of Anhydrite covered by a thin crusts or even partial crusts of quartz. Later the Anhydrite was dissolved and then Datolite and other minerals were deposited on the quartz at a later date. Often it may be that the amount of Datolite and other minerals are much greater than the amount of the quartz in the specimen. [b]Datolite after Anhydrite with Apophyllite/b] [b]USA[/b] [b]New Jersey, Somerset Co., Bernards Township, Millington Quarry (Morris County Crushed Stone Co. Quarry; Tilcon Quarry)[/b] [pic id=345606 width=400 float=left]Datolite after Anhydrite 5cm wide[/pic] [pic id=345605 width=400 float=center]Back side of left[/pic] [b]Danburite after Topaz with Topaz[/b] [b]Burma (Myanmar)[/b] [b]Mandalay Division, Sagaing District, Mogok[/b] [pic id=197466 width=400 float=left]Danburite @ Topaz w Topaz 8.4cm tall[/pic] [b]Descloizite after Vanadinite with Calcite[/b] [b]Mexico[/b] [b]Chihuahua, Mun. de Coyame, Cuchillo Parado, Aurora Mine[/b] [pic id=105714 width=450 float=left]Descloizite @ Vanadinite & Calcite 2.5cm[/pic] [b]Descloizite after Vanadinite[/b] [b]Portugal[/b] [b]Beja District, Moura, Sobral da Adiça[/b] [pic id=235942 width=400 float=left]Descloizite after Vanadinite 3cm wide[/pic] [b]Descloizite after Vanadinite[/b] [b]Namibia[/b] [b]Otjozondjupa Region, Grootfontein District, Grootfontein, Abenab Mine[/b] [pic id=119351 width=408 float=left]Descloizite @ Vanadinite & Calcite 3.6cm[/pic] [pic id=277741 width=393 float=center]Descloizite after Vanadinite ~5.5cm tall[/pic] [pic id=314231 width=400 float=left]Descloizite after Vanadinite ~7.6cm wide[/pic] These are old time specimens and I don't think any of them have been produced during the last 75 years or so. They used to be fairly abundant and you can often see them in old institutional collections. All that I have seen have sustained some damage and most of them still have altered at least on the surface to Descloizite and all have cores of red Vanadinite. I have seen some crystals of at least four inches, and if these had been encountered and carefully collected in an unaltered state they would have produced undoubtedly the worlds finest Vanadinite specimens. [Rock Currier 2011] [b]Descloizite after Wulfenite[/b] [b]USA[/b] [b]Arizona, Pinal Co., Mammoth District, Tiger, St. Anthony deposit, Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine)[/b] [pic id=100280 width=400 float=left]Descloizite @ Wulfenite 1.5cm wide[/pic] [b]Digenite after Chalcocite[/b] [b]UK[/b] [b]Cornwall, St Just District, Cornwall, St Just, Botallack, Botallack Mine[/b] [pic id=277761 width=400 float=left]Digenite after Chalcocite ~6.5cm wide[/pic] [b]Dioptase after Calcite[/b] [b]Democratic Republic of Congo (Zaïre)[/b] [b]Katanga (Shaba), Katanga Copper Crescent, Central area, Shinkolobwe, Tantara Mine[/b] [pic id=215986 width=410 float=left]Dioptase after Calcite 9.7cm across[/pic] [pic id=266740 width=410 float=center]Dioptase after Calcite 6.5cm wide[/pic] [b]Dolomite after Aragonite[/b] [b]Italy[/b] [b]Tuscany, Grosseto Province, Gavorrano, Gavorrano Mine[/b] [pic id=15426 width=400 float=left]Dolomite @ Aragonite ~5cm wide[/pic] [b]Dolomite after Aragonite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb, Tsumeb Mine (Tsumcorp Mine)[/b] [pic id=173841 width=400 float=left]Dolomite after Aragonite 4cm tall[/pic] [b]Dolomite after Aragonite[/b] [b]USA[/b] [b]New Mexico, Eddy Co.[/b] [pic id=208795 width=410 float=left]Dolomite @ Aragonite to 5.5cm wide[/pic] Every area of the world where collectors exist in large numbers, there are local localities like these that produce specimens that are not very notable, but never the less cherished and collected by local collectors. Even though they may be locally abundant, they do not achieve wide distribution in the collector community because of their unremarkable character and it will pay no one enough to go to the trouble of collecting them and selling them. These may be prime examples of such specimens but in truth I have no idea of how abundant these specimens are and I hope someone who has collected them may read this and volunteer specific information about this locality and its specimens. [Rock Currier 2011] [b]Dolomite after Aragonite[/b] [b]USA[/b] [b]New Mexico, Guadalupe Co.[/b] [pic id=94272 width=420 float=left]Dolomite @ Aragonite 4.1cm wide[/pic] [b]Dolomite after Aragonite[/b] [b]USA[/b] [b]Wyoming, Big Horn Co., Lovell[/b] [pic id=1372 width=350 float=left]Dolomite @ Aragonite 2.7cm[/pic] [pic id=323650 width=453 float=center]Dolomite after Aragonite 5cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Belgium[/b] [b]Namur Province, Namur, Beez[/b] [pic id=316570 width=400 float=left]Dolomite after Calcite 8.2cm tall[/pic] [b]Dolomite after Calcite[/b] [b]Bulgaria[/b] [b]Plovdiv Oblast, Rhodope Mts, Laki (Luki), Djurkovo Complex, Droujba (Drujba) Mine[/b] [pic id=263507 width=400 float=left]Dolomite after Calcite 6cm tall[/pic] [b]Dolomite after Calcite[/b] [b]Bulgaria[/b] [b]Plovdiv Oblast, Rhodope Mts, Laki (Luki), Govedarnika Mine[/b] [pic id=295271 width=400 float=left]Dolomite after Calcite 10cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Germany[/b] [b]North Rhine-Westphalia, Sauerland, Lennestadt, Grevenbrück quarry[/b] [pic id=115181 width=380 float=left]Dolomite @ Calcite 7.5cm wide[/pic] [pic id=95985 width=412 float=center]Dolomite after Calcite 5.5cm wide[/pic] [pic id=47772 width=375 float=left]Dolomite @ Calcite 11cm wide[/pic] [pic id=116047 width=435 float=center]Dolomite after Calcite 9cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Germany[/b] [b]Saxony, Erzgebirge, Schlema-Hartenstein District, Shaft 371[/b] [pic id=371159 width=410 float=left]Dolomite @ Calcite 6cm tall[/pic] [b]Dolomite after Calcite & Calcite[/b] [b]Mexico[/b] [b]Guanajuato[/b] [pic id=201604 width=400 float=left]Dolomite after Calcite 5.9cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb, Tsumeb Mine (Tsumcorp Mine)[/b] [pic id=187610 width=405 float=left]Dolomite after Calcite 7.1cm wide[/pic] [pic id=118843 width=391 float=center]Dolomite after Calcite 2.8cm wide[/pic] [pic id=74253 width=405 float=left]Dolomite after Calcite 7.5cm tall[/pic] [pic id=74254 width=405 float=center]Back side of left[/pic] [pic id=69082 width=405 float=left]Dolomite after Calcite 9cm wide[/pic] [b]Dolomite after Calcite & Calcite[/b] [b]Poland[/b] [b]Lower Silesia (Dolnoslaskie), Rudawy Janowickie Mts, Czarnów, Redziny, Dolomite quarry[/b] [pic id=87668 width=390 float=left]Dolomite after Calcite 16cm wide[/pic] [pic id=87667 width=405 float=center]Dolomite after Calcite 12cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Romania[/b] [b]Maramures Co., Cavnic (Kapnic; Kapnik)[/b] [pic id=47696 width=410 float=left]Dolomite after Calcite 9.5cm wide[/pic] [pic id=47279 width=397 float=center]Dolomite after Calcite 13cm wide[/pic] [b]Dolomite after Calcite[/b] [b]Romania[/b] [b]Maramures Co., Cavnic (Kapnic; Kapnik), Cavnic Mine (Kapnikbánya)[/b] [pic id=731 width=400 float=left]Dolomite @ Calcite 8cm wide[/pic] [b]Dolomite after Halite[/b] [b]USA[/b] [b]Oklahoma, Major Co., Fairfiew[/b] [pic id=283791 width=400 float=left]Dolomite after Halite 7.5cm wide[/pic] [b]Dolomite after Magnesite[/b] [b]Italy[/b] [b]Piedmont, Torino Province, Canavese District, Chiusella Valley, Traversella, Traversella Mine[/b] [pic id=20800 width=410 float=left]Dolomite @ Magnesite FOV 6cm[/pic] [b]Dolomite after Quartz[/b] [b]Romania[/b] [b]Maramures Co., Cavnic (Kapnic; Kapnik), Cavnic Mine (Kapnikbánya)[/b] [pic id=30669 width=400 float=left]Dolomite after Quartz 9.8cm[/pic] [b]Dolomite after Siderite[/b] [b]Romania[/b] [b]Maramures Co., Cavnic (Kapnic; Kapnik)[/b] [pic id=131222 width=400 float=left]Dolomite after Siderite 14cm wide[/pic] [b]Dolomite after Siderite[/b] [b]Romania[/b] [b]Maramures Co., Baia Mare (Nagybánya), Chiuzbaia (Kisbánya), Herja Mine[/b] [pic id=293157 width=400 float=left]Dolomite @ Siderite 12.7cm wide[/pic] [b]Dolomite after Stibnite[/b] [b]Romania[/b] [b]Maramures Co., Cavnic (Kapnic; Kapnik)[/b] [pic id=200591 width=400 float=left]Dolomite after Stibnite 10.9cm tall[/pic] [b]Duftite after Wulfenite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb[/b] [pic id=516417 width=405 float=left]Duftite @ Azurite and Mimetite 4cm tall[/pic] [b]Duftite after Wulfenite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb[/b] [pic id=288064 width=405 float=left]Duftite @ Wulfenite 3.3cm wide[/pic][pic id=107756 width=390 float=center]Duftite @ Wulfenite 2.5cm center[/pic] [b]Dyscrasite after Silver[/b] [b]Czech Republic[/b] [b]Bohemia (Böhmen; Boehmen), Central Bohemia Region, Príbram[/b] [pic id=79508 width=400 float=left]Dyscrasite after Silver 4cm[/pic] One wonders if this specimen is described accurately. It would appear that the shape of the crystal is all wrong for a silver crystal. [b]Elpadite, Aegirine etc. after Eudaylite[/b] [b]Greenland[/b] [b]Kitaa (West Greenland) Province, Narsaq, Igaliku (Igaliko), Narssârssuk (Narsarsuk), Narssârssuk pegmatite (Narsarsuk pegmatite)[/b] [pic id=166080 width=375 float=left]Elpadite @ Eudaylite xl. ~2cm[/pic] [pic id=166079 width=425 float=center]Elpadite @ Eudaylite xls to 1.5cm[/pic] [b]Elpadite after Serandite; Serandite (bottom)[/b] [b]Canada[/b] [b]Québec, Montérégie, Rouville RCM, Mont Saint-Hilaire, Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry)[/b] [pic id=309660 width=420 float=left]Elpidite after Serandite ~11cm; bottom is Serandite[/pic] [b]Ernstite after Eosphorite[/b] [b]Brazil[/b] [b]Minas Gerais, Doce valley, Divino das Laranjeiras[/b] [pic id=23974 width=420 float=left]Ernstite after Eosphorite 7.5cm wide[/pic] [b]Epsomite after Glauberite[/b] [b]Australia[/b] [b]South Australia, Mt Lofty Ranges, North Mt Lofty Ranges, Lochiel, Lake Bumbunga[/b] [pic id=73054 width=385 float=left]Epsomite after Glauberite 5cm[/pic] [pic id=167428 width=424 float=center]Epsomite after Glauberite 5.5 cm wide[/pic] [b]Eriochalcite after Bandylite[/b] [b]Chile[/b] [b]Antofagasta Region, El Loa Province, Calama, Chuquicamata District, Toki Cu deposit, Queténa Mine[/b] [pic id=178905 width=425 float=left]Eriochalcite after Bandylite 7.8cm wide[/pic] [pic id=178906 width=370 float=center]Eriochalcite @ Bandylite close up[/pic] The few good specimens of Bandylite I have seen look like little green playing cards on matrix and here you can see the some rather rough little green "playing cards". Bandylite is not very stable and probably most specimens of Bandylite have been altered to Eriochalcite. [b]Ettringite after calcite?[/b] [b]South Africa[/b] [b]Northern Cape Province, Kalahari manganese fields, Kuruman, N'Chwaning Mines[/b] [pic id=163174 width=400 float=left]Ettringite after Calcite? 4.7cm tall[/pic] [b]Euclase after Beryl[/b] [b]Zimbabwe[/b] [b]Mashonaland West, Karoi (Urungwe; Hurungwe) District[/b] [pic id=372151 width=400 float=left]Euclase after Beryl 8cm tall[/pic] There are much better examples of this type of pseudomorph and when pictures become available we will place them here. [b]Fahlunite after Cordierite[/b] [b]USA[/b] [b]Connecticut, Middlesex Co., Haddam, Timms Hill (Tim's Hill)[/b] [pic id=286532 width=400 float=left]Fahlunite @ Cordierite 11 cm wide[/pic] [b]Feldspar after Lepidolite[/b] [b]Brazil[/b] [b]Minas Gerais, Jequitinhonha valley, Capelinha[/b] [pic id=120147 width=450 float=left]Feldspar @ lepidolite w [i]Tourmaline[/i]4.7cm [/pic] It is debatable that the feldspar is really replacing the lepidolite in this specimen, but saying so might help sell the specimen. Also its a pretty specimen and lord knows most of the pseudomorphs pictured here can use all the help they can get. [b]feldspar after Leucite[/b] [b]Czech Republic[/b] [b]Bohemia (Böhmen; Boehmen), Karlovy Vary Region, Krušné Hory Mts (Erzgebirge), Ostrov, Loucná[/b] [pic id=102645 width=455 float=left]feldspar after Leucite FOV 7.5cm wide[/pic][pic id=61795 width=345 float=center]feldspar after Leucite 4.3cm[/pic] [b][i]Feldspar[/i] after [i]Tourmaline[/i][/b] [b]USA[/b] [b]California, San Diego Co., Mesa Grande District, Gem Hill, Himalaya Mine (Himalaya dikes; Himalaya pegmatite)[/b] [pic id=48213 width=400 float=left][i]Feldspar[/i] after [i]Tourmaline[/i] 5.6cm tall[/pic] [b]Ferberite after Scheelite[/b] [b]France[/b] [b]Limousin, Haute-Vienne, Saint-Léonard-de-Noblat, Puy-les-Vignes[/b] [pic id=301088 width=370 float=left]Ferberite after Scheelite ~7.5cm wide[/pic] [pic id=336774 width=430 float=center]Ferberite after Scheelite 7cm wide[/pic] [b]Ferberite after Scheelite[/b] [b]Japan[/b] [b]Honshu Island, Chubu region, Yamanashi prefecture, Kinpuzan district, Kofu City, Otome mine (Mitake mine)[/b] [pic id=203279 width=400 float=left]Ferberite after Scheelite 3.8cm tall[/pic] [b]Fluorapatite after Pyromorphite[/b] [b]Germany[/b] [b]Saxony, Erzgebirge, Freiberg District, Halsbrücke, Lorenz Gegentrum Mine[/b] [pic id=59696 width=400 float=left]Fluorapatite @ Pyromorphite FOV 6mm[/pic] [b]Fluorite after Calcite[/b] [b]Mexico[/b] [b]Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District [/b][pic id=239856 width=300 float=left]Fluorite @ Calcite 14.7cm tall[/pic] [pic id=52251 width=490 float=center]Fluorite after Calcite 9.3cm wide[/pic] [b]Fluorite after crinoid stem[/b] [b]UK[/b] [b]England, Derbyshire, Ashover, Milltown, Milltown Quarry[/b] [pic id=218182 width=400 float=left]Fluorite after crinoid stem 1cm wide[/pic] [b]Fluorite after mica[/b] [b]Namibia[/b] [b]Erongo Region, Usakos and Omaruru Districts, Erongo Mountain[/b] [pic id=229857 width=380 float=left]Fluorite after mica 3.6cm tall[/pic] [pic id=290211 width=420 float=center]Fluorite after mica, 4.5cm tall[/pic] [pic id=290213 width=385 float=left]Fluorite after mica[/pic] [pic id=290214 width=420 float=center]Fluorite after mica[/pic] [b]Fluorite after Wood[/b] [b]Germany[/b] [b]Saxony, Chemnitz, Hilbersdorf[/b] [pic id=369962 width=400 float=left]Fluorite after Wood 5.2cm wide[/pic] [b]Galena after Cerussite[/b] [b]Germany[/b] [b]North Rhine-Westphalia, Niederberg area, Wülfrath, Rohdenhaus, Rohdenhaus Quarry (incl. Krieger Quarry)[/b] [pic id=49735 width=400 float=left]Galena after Cerussite FOV 4mm[/pic] [b]Galena after Pillaite?[/b] [b]Italy[/b] [b]Tuscany, Lucca Province, Apuan Alps, Stazzema, Ponte Stazzemese, Buca della Vena Mine[/b] [pic id=66936 width=400 float=left]Galena after Pillaite? FOV 3mm?[/pic] [b]Galena after Pyromorphite[/b] [b]France[/b] [b]Brittany, Finistère, Huelgoat[/b] [pic id=108669 width=400 float=left]Galena @ Pyromorphite 2cm wide[/pic] [b]Galena after Pyromorphite[/b] [b]France[/b] [b]Brittany, Finistère, Poullaouen[/b] [pic id=236394 width=400 float=left]Galena after Pyromorphite ~7.5cm wide[/pic] [b]Galena after Pyromorphite[/b] [b]Germany[/b] [b]Rhineland-Palatinate, Hunsrück Mts, Bernkastel-Kues[/b] [pic id=236397 width=365 float=left]Galena after Pyromorphite ~4.5cm tall[/pic] [pic id=236396 width=435 float=center]Galena after Pyromorphite ~3.5cm tall[/pic] [pic id=236395 width=410 float=left]Galena after Pyromorphite ~4.5cm wide[/pic] [pic id=236399 width=383 float=center]Galena after Pyromorphite ~6.5c wide[/pic] These pseudomorphs of Galena after Pyromorphite are not always complete replacements but never the less these are amongst the most sought after pseudomorphs by collectors, and can bring thousands of dollars each. Some of the ones pictured here and below are amongst the best examples of these pseudomorphs. [b]Galena after Pyromorphite[/b] [b]Germany[/b] [b]Rhineland-Palatinate, Hunsrück Mts, Bernkastel-Kues, Kautenbach Mine[/b] [pic id=236407 width=401 float=left]Galena after Pyromorphite ~8.5cm tall[/pic] [pic id=93848 width=400 float=center]Galena @ Pyromorphite 4cm wide[/pic]. [pic id=122203 width=400 float=center]Galena @ Pyromorphite 2.6cm wide[/pic] [pic id=43667 width=401 float=left]Galena @ Pyromorphite 6cm wide[/pic] [b]Galena after Pyromorphite[/b] [b]UK[/b] [b]England, Cornwall, St Agnes District, Perranzabuloe, Hendra Croft, Wheal Hope (incl. South Wheal Budnick; West Wheal Hope)[/b] [pic id=236391 width=393 float=left]Pyromorphite after Galena ~8cm tall[/pic] [pic id=180494 width=410 float=center]Galena after Pyromorphite 10.5cm wide[/pic]. [pic id=172077 width=410 float=center]Galena after Pyromorphite 2.7cm[/pic] [b][i]Garnet[/i] after Orthoclase & Epidote[/b] [b]China[/b] [b]Hebei Province, Handan Prefecture[/b] [pic id=242780 width=400 float=left][i]Garmet[/i] @ Orthoclase & Epidote 6.3cm[/pic] [pic id=242779 width=402 float=center]Another view of left[/pic] [b]Gasparite-(Ce) after Synchysite[/b] [b]Italy[/b] [b]Piedmont, Verbano-Cusio-Ossola Province, Ossola Valley, Baceno, Mount Cervandone, Devero Alp (Devero Valley; Val Devero)[/b] [pic id=220096 width=400 float=left]1.7mm Gasparite-(Ce) @ Synchysite[/pic] [pic id=220098 width=400 float=center]1.8mm Gasparite-(Ce) @ Synchysite[/pic] [b]Gmelinite after Chabazite[/b] [b]Canada[/b] [b]Nova Scotia, Cumberland Co., Bay of Fundy, Five Islands[/b] [pic id=153536 width=370 float=left]Gmelinite @ Chabazite 4.1 cm tall[/pic] [pic id=153547 width=445 float=center]Gmelinite @ Chabazite 4.1cm tall[/pic] [pic id=153544 width=405 float=left]Gmelinite @ Chabazite 7.6cm wide [/pic][pic id=246640 width=400 float=center]Gmelinite after Chabazite 7.3cm wide[/pic] [b]Gobbinsite after garronit??[/b] [b]Canada[/b] [b]Québec, Montérégie, Rouville RCM, Mont Saint-Hilaire, Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry)[/b] [pic id=172192 width=400 float=left]Gobbinsite after Garronite?? & Analcime FOV 1.7cm[/pic] The Goethite pseudomorphs shown below in many cases would probably be more accurately labeled limonite after xxxxx. Almost certainly the majority of the specimens shown below were never accurately characterized before posting. These together with those in the section containing the limonite pseudomorphs represent a very large group of pseudomorphs, and a large collection of the many different types could be made. [b]Goethite after Calcite[/b] [b]Germany[/b] [b]Sazony, Erzgebirge, Eibenstock[/b] [pic id=118025 width=400 float=left]Goethite after Calcite 11.5cm wide[/pic] [b]Goethite after Calcite[/b] [b]Namibia[/b] [b]Erongo Region, Usakos and Omaruru Districts, Erongo Mountain[/b] [pic id=215498 width=400 float=left]Goethite after Calcite 4.5cm tall[/pic] [b]Goethite after Cuprite[/b] [b]Germany[/b] [b]North Rhine-Westphalia, Bergisches Land, Rösrath, Hoffnungsthal, Leibnitz-Dante Mine[/b] [pic id=61110 width=420 float=left]Goethite @ Cuprite FOV 1.2mm wide[/pic] [b]Goethite after Gypsum[/b] [b]Mexico[/b] [b]Chihuahua, La Negra, Mun. de Carmargo, Hercules Mine (Negra Mine)[/b] [pic id=39105 width=400 float=left]Goethite after Gypsum 4.2cm wide[/pic] [b]Goethite after Gypsum[/b] [b]Mexico[/b] [b]Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District[/b] [pic id=182557 width=400 float=left]Geothite after Gypsum 16.0cm tall[/pic] [b]Goethite after Gypusm? & Calcite[/b] [b]Morocco[/b] [b]Atlas Mts.[/b] [pic id=113659 width=500 float=left]Goethite after Gypsum with Calcite 9cm wide[/pic] [b]Goethite after Ilvaite[/b] [b]Russia[/b] [b]Far-Eastern Region, Primorskiy Kray, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Nikolaevskiy Mine[/b] [pic id=89442 width=300 float=left]Goethite @ Ilvaite 4.7cm[/pic] [pic id=263613 width=505 float=center]Goethite after Ilvaite 5.7cm tall[/pic] [b]Goethite after Kutnohorite?[/b] [b]South Africa[/b] [b]Northern Cape Province, Kalahari manganese fields, Kuruman, N'Chwaning Mines[/b] [pic id=174158 width=400 float=left]Goethite @ Kutnohorite? 6.5cm tall[/pic] [b]Goethite after Marcasite[/b] [b]Hungary[/b] [b]Pest Co., Budai Mts., Budaörs, Frank Hill (Kakukk Hill)[/b] [pic id=153760 width=297 float=left]Goethite after Marcasite 2cm[/pic] [pic id=157643 width=503 float=center]Goethite after Marcasite 3.5cm wide[/pic] [b]Goethite after Marcasite[/b] [b]USA[/b] [b]Wisconsin, Columbia Co.[/b] [pic id=11023 width=400 float=left]Goethite after Marcasite 3cm wide[/pic] [b]Goethite after Siderite[/b] [b]USA[/b] [b]Colorado, Park and Teller Cos., Crystal Peak area[/b] [pic id=266191 width=400 float=left]Goethite after Siderite 5.5cm wide[/pic] [b]Goethite after Pyrite[/b] [b]Austria[/b] [b]Tyrol, East Tyrol, Tauern valley, Matrei in Osttirol, Nussingkogel Mt.[/b] [pic id=208408 width=400 float=left]Goethite after Pyrite 2.9cm[/pic] [b]Goethite after Pyrite[/b] [b]Brazil[/b] [b]Minas Gerais, Jequitinhonha valley, Diamantina[/b] [pic id=239927 width=400 float=left]Goethite after Pyrite 5.4cm wide[/pic] [b]Goethite after Pyrite[/b] [b]Italy[/b] [b]Tuscany, Massa-Carrara Province, Fivizzano, Sassalbo, Ospedalaccio Pass[/b] [pic id=204454 width=400 float=left]Goethite after Pyrite 4cm wide[/pic] [b]Goethite after Pyrite[/b] [b]Mexico[/b] [b]Sonora, Mun. de Alamos, San Antonio[/b] [pic id=8970 width=410 float=left]Goethite after Pyrite 11cm wide[/pic] [b]Goethite after Pyrite[/b] [b]UK[/b] [b]Wales, Cardiff (South Glamorgan; Glamorgan), Bwlch-y-cwm, Blaengwynlais Quarry[/b] [pic id=1209 width=400 float=left]Goethite after Pyrite, coin for scale[/pic] [b]Goethite after Pyrite[/b] [b]USA[/b] [b]Colorado, Summit Co., Breckenridge District[/b] [pic id=7093 width=400 float=left]Goethite after Pyrite 2.8cm wide[/pic] [b]Goethite after Pyrite[/b] [b]USA[/b] [b]Indiana, Orange Co., Paoli[/b] [pic id=76578 width=400 float=left]Goethite after Pyrite to 1cm[/pic] [b]Goethite after Pyrite[/b] [b]USA[/b] [b]Wisconsin, Columbia Co.[/b] [pic id=300022 width=400 float=left]Goethite after Pyrite ~2cm wide[/pic] [b]Goethite after Pyrrhotite[/b] [b]Switzerland[/b] [b]Wallis (Valais), Lötschen valley, Blatten[/b] [pic id=90342 width=400 float=left]Goethite after Pyrrhotite 3.4cm tall[/pic] [pic id=90341 width=400 float=center]1.2cm Goethite after Pyrrhotite[/pic] [b]Goethite after Quartz[/b] [b]USA[/b] [b]Colorado, Park Co., Lake George, Steven's Ranch, Yucca Hill, R. A. Kosnar claim[/b] [pic id=328822 width=400 float=left]Goethite after Quartz 3.3cm wide[/pic] [b]Goethite after Siderite[/b] [b]UK[/b] [b]England, Cornwall, St Just District, St Just, Kenidjack Valley, Wheal Drea[/b] [pic id=34883 width=400 float=left]Goethite after Siderite FOV 1.7cm[/pic] [b]Goethite after Siderite[/b] [b]USA[/b] [b]Colorado, El Paso Co., Pikes Peak, Sentinel rock, Mona Mine[/b] [pic id=334509 width=400 float=left]Goethite @ Siderite 9.7cm tall[/pic] [b]Goethite after Siderite & Quartz[/b] [b]USA[/b] [b]Colorado, Park Co., Lake George (Badger Flats) Area[/b] [pic id=241719 width=410 float=left]Goethite after Siderite with Quartz ~7cm tall[/pic] [b]Goethite after Siderite[/b] [b]USA[/b] [b]Washington, Okanogan Co., Golden Horn Batholith, Washington Pass[/b] [pic id=24082 width=430 float=left]Goethite @ Siderite FOV 2.2mm wide[/pic] [b]Goethite after Strengite[/b] [b]Germany[/b] [b]Baden-Württemberg, Black Forest, Wolfach, Oberwolfach, Rankach valley, Clara Mine[/b] [pic id=87266 width=420 float=left]Goethite @ Strengite FOV 3mm wide[/pic] [b]Goethite after ?[/b] [b]Namibia[/b] [b]Erongo Region[/b] [pic id=284730 width=400 float=left]Goethite after ? 11.5cm wide[/pic] [b]Grossular-Hibschite (akhtaragdite) after helvite?[/b] [b]Russia[/b] [b]Eastern-Siberian Region, Saha Republic (Sakha Republic; Yakutia), Vilyui River Basin (Vilui River Basin; Wilui River Basin), Akhtaragda River mouth (Achtaragda River mouth)[/b] [pic id=350642 width=405 float=left]Grossular/Hibschite @ Helvite 2.3cm[/pic] [b]Grossular after Epidote[/b] [b]USA[/b] [b]Vermont, Lowell & Eden, Orleans & Lamoille Cos., Belvidere Mountain Quarries (Vermont Asbestos Group mine; VAG mine; Ruberoid Asbestos mine; Eden Mills quarries)[/b] [pic id=27511 width=465 float=left]Grossular after Epidote 2.4cm tall[/pic] [pic id=225230 width=335 float=center]Grossular @ Epidote 4.3cm [/pic] [pic id=1897 width=418 float=left]Grossular after ? 5cm tall[/pic] [pic id=1898 width=373 float=center]Grossular after ? 6cm tall[/pic] [pic id=225226 width=418 float=left]Grossular after Epidote 7.4cm tall[/pic] [b]gummite after bröggerite[/b] [b]Russia[/b] [b]Northern Region, Karelia Republic, Northern Karelia, Chupa pegmatite field[/b] [pic id=167587 width=440 float=left]gummite after bröggerite 5cm wide[/pic] [pic id=167588 width=360 float=center]gummite @ bröggerite FOV 1.5cm[/pic] [pic id=168525 width=440 float=left]gummite @ bröggerite 5.5cm wide[/pic] [b]gummite after Uraninite[/b] [b]Democratic Republic of Congo (Zaïre)[/b] [b]Katanga (Shaba), Katanga Copper Crescent, Central area, Shinkolobwe, Shinkolobwe Mine (Kasolo Mine)[/b] [pic id=264994 width=400 float=left]gummite @ Uraninite 7.5cm wide[/pic] [pic id=264995 width=392 float=center]close up of left[/pic] [b]Gypsum after fossil[/b] [b]Australia[/b] [b]South Australia, Murray Basin, Morgan[/b] [pic id=217800 width=400 float=left]Gypsum after fossil FOV 3.5cm[/pic] [b]Gypsum after Glauberite[/b] [b]USA[/b] [b]Arizona, Yavapai Co., Black Hills (Black Hill Range), Verde District, Jerome[/b] [pic id=140196 width=325 float=left]Gypsum @ Glauberite ~5cm[/pic] [pic id=50553 width=475 float=center]Gypsum after Glauberite 5cm wide[/pic] The Calcite pseudomorphs after Glauberite are much more common than the Gypsum pseudomorphs after Glauberite pictured above. But I don't think you could call them rare. [b]Gypsum after Halite[/b] [b]USA[/b] [b]California, Santa Barbara Co.[/b] [pic id=189741 width=375 float=left]Gypsum @ Halite 4cm wide[/pic] [pic id=189743 width=425 float=center]Gypsum @ Halite 3.9cm wide[/pic] [b]Gypsum after Halite[/b] [b]USA[/b] [b]Oklahoma, Greer Co.[/b] [pic id=71145 width=400 float=left]Gypsum after Halite 2.1cm wide[/pic] [b]Halite on bottle[/b] [b]Poland[/b] [b]Malopolskie, Bochnia, Bochnia Mine[/b] [pic id=80760 width=400 float=left]Halite to 1cm on bottle[/pic] [b]Hausmnnite after Manganite[/b] [b]Germany[/b] [b]Thuringia, Harz Mts, Nordhausen, Ilfeld[/b] [pic id=278797 width=275 float=left][/pic] [pic id=180081 width=528 float=center]Hausmnnite after Manganite 4.4cm wide[/pic]Hausmnnite @ Manganite 3.9cm [pic id=183000 width=398 float=left]Hausmannite @ Manganite 8.3cm wide[/pic] [pic id=183002 width=399 float=center]Close up of left[/pic] [b]Hedenbergite after Ilvaite[/b] [b]Russia[/b] [b]Far-Eastern Region, Primorskiy Kray, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche)[/b] [pic id=159534 width=400 float=left]Hedenbergite after Ilvaite 8.2cm tall[/pic] [b]Hematite after Actinolite[/b] [b]Germany[/b] [b]Saxony, Zwickau, Maxhütte[/b] [pic id=119979 width=400 float=left]Hematite @ Actinolite 10.2cm wide[/pic] [b]Hematite after Calcite[/b] [b]Germany[/b] [b]North Rhine-Westphalia, Sauerland, Iserlohn[/b] [pic id=280516 width=400 float=left]Hematite after Calcite 4.2cm wide[/pic] [b]Hematite after Calcite[/b] [b]Germany[/b] [b]Saxony, Erzgebirge, Schwarzenberg District, Langenberg, Graul[/b] [pic id=152889 width=400 float=left]Hematite after Calcite 5cm wide[/pic] [b]Hematite after Calcite[/b] [b]Germany[/b] [b]Thuringia, Thuringian Forest, Ilmenau[/b] [pic id=225032 width=400 float=left]Hematite after Calcite 4.4cm wide[/pic] [b]Hematite after Epidote[/b] [b]USA[/b] [b]Washington, King Co., North Bend, Green Mountain, Bessemer Ridge[/b] [pic id=280384 width=400 float=left]Hematite after Epidote ~4cm tall[/pic] [b]Hematite after Magnetite[/b] [b]Argentina[/b] [b]La Rioja, Milagros[/b] [pic id=239945 width=400 float=left]Hematite @ Magnetite ~3.6cm wide[/pic] [b]Hematite after Magnetite[/b] [b]Argentina[/b] [b]Mendoza, Altiplano de Payún Matru, Payún volcano[/b] [pic id=198112 width=400 float=left]Hematite @ Magnetite 7.5cm tall[/pic] [pic id=160167 width=398 float=center]Hematite after Magnetite 7.9cm tall[/pic] [pic id=3967 width=465 float=left]Hematite @ Magnetite 4cm wide[/pic] [pic id=130948 width=335 float=center]Hematite @ Magnetite 10.3cm[/pic] [pic id=198122 width=470 float=left]Hematite after Magnetite 11.7cm wide[/pic] These showed up on the market about ten years ago and were greatly appreciated by mineral collectors. Some of the better larger specimens sold for several thousand dollars. Some of the better big specimens measured as much as 20 or more cm in diameter. [b]Hematite after Magnetite[/b] [b]Norway[/b] [b]Akershus, Nittedal, Bjønndalen quarry[/b] [pic id=277434 width=400 float=left]Hematite after Magnetite 1cm wide[/pic] [b]Hematite after Magnetite[/b] [b]USA[/b] [b]Utah, Beaver Co., Beaver Lake Mts, Beaver Lake District, Black Rock Mine[/b] [pic id=49337 width=410 float=left]Hematite after Magnetite 6.8cm wide[/pic] [b]Hematite after Magnetite[/b] [b]USA[/b] [b]Utah, Iron Co., Iron Springs District (Iron and Granite Mountains & Three Peaks)[/b] [pic id=336089 width=375 float=left]Hematite @ Magnetite 5cm[/pic] [pic id=336092 width=429 float=center]Hematite after Magnetite 7cm wide[/pic] [pic id=228076 width=375 float=left]Hematite @ Magnetite 6cm tall[/pic] [b]Hematite after Magnetite[/b] [b]USA[/b] [b]Utah, Millard Co., Twin Peak, Twin Peaks Prospect (Black Crystal; Black Diamond)[/b] [pic id=298703 width=320 float=left]Hematite @ Magnetite 4.2cm[/pic][pic id=219936 width=480 float=center]Hematite @ Magnetite 4.9cm wide[/pic] [b]Hematite after Marcasite[/b] [b]Egypt[/b] [b]Matruh Governorate, Farafra Oasis[/b] [pic id=212581 width=400 float=left]Hematite after Marcasite 5cm tall[/pic] [pic id=212591 width=400 float=center]Hematite after Marcasite 5.1cm tall[/pic] [pic id=212618 width=400 float=left]Hematite @ Marcasite 5.2cm wide[/pic] [pic id=212596 width=400 float=center]Hematite @ Marcasite 5cm wide[/pic] [pic id=212615 width=445 float=left]Hematite after Marcasite 4.1cm wide[/pic] [pic id=182926 width=350 float=center]Hematite @ Marcasite 2.2cm tall[/pic] [pic id=213395 width=465 float=left]Hematite after Marcasite 6.5cm wide[/pic] [pic id=62624 width=340 float=center]Hematite @ Marcasite 7.2cm [/pic] These specimens are mostly picked up on the surface of the desert with very little digging needed. The are apparently abundant and even the best of them sold for modest prices. Everyone could afford one of these. [b]Hematite after Pyrite[/b] [b]Argentina[/b] [b]San Luis, Inti Huasi, San Juan Mine[/b] [pic id=116187 width=400 float=left]Hematite after Pyrite 3cm wide[/pic] [b]Hematite after fossil shell[/b] [b]Egypt[/b] [b]Matruh Governorate, Farafra Oasis[/b] [pic id=212593 width=400 float=left]Hematite after fossil shell 4.6cm[/pic] [b]Hematite after Siderite[/b] [b]USA[/b] [b]Colorado, Teller Co., Crystal Peak area[/b] [pic id=142416 width=390 float=left]Hematite after Siderite 5.8cm wide[/pic] [pic id=177652 width=413 float=center]Hematite after Siderite 6.3cm [/pic] [b]Hematite after Siderite[/b] [b]USA[/b] [b]Colorado, El Paso Co., Cheyenne District (St. Peters Dome District), St Peters Dome, Eureka Tunnel (1-15 pegmatite)[/b] [pic id=200248 width=400 float=left]Hematite after Siderite 5.3cm wide[/pic] [b]Hematite? after Siderite[/b] [b]USA[/b] [b]Colorado, Park Co., Lake George, Steven's Ranch, Yucca Hill, R. A. Kosnar claim[/b] [pic id=164051 width=440 float=left]Hematite? after Siderite 3.2cm wide[/pic] [pic id=229571 width=364 float=center]Hematite? @ Siderite 4.8cm wide[/pic] [b]Hemimorphite after Calcite[/b] [b]USA[/b] [b]Wisconsin, Iowa Co., Upper Mississippi Valley District, Mineral Point[/b] [pic id=184604 width=400 float=left]Hemimorphite after Calcite 8.6cm[/pic] [b]Hemimorphite after Dolomite[/b] [b]USA[/b] [b]Missouri, Newton Co., Tri-State District, Granby Field[/b] [pic id=117671 width=400 float=left]Hemimorphite @ Dolomite 9.5cm tall[/pic] [b]Heterosite after Triphylite[/b] [b]USA[/b] [b]New Hampshire, Grafton Co., Groton, Palermo No. 1 Mine (Palermo #1 pegmatite)[/b] [pic id=1163 width=400 float=left]Heterosite @ Triphylite 1.5cm[/pic] [b]Hingganite-(Yb) after ?[/b] [b]Norway[/b] [b]Telemark, Kragerø, Tangen Feldspar Quarry[/b] [pic id=54756 width=400 float=left]A 2cm Hingganite-(Yb) after ? [/pic] [b]Hinsdalite after Pyromorphite[/b] [b]Australia[/b] [b]Tasmania, Zeehan district, Zeehan, Zeehan Queen mine ("Sylvester-Queen") Pyromorphite lode[/b] [pic id=73386 width=515 float=left]Hinsdalite after Pyromorphite 4.3cm wide[/pic][pic id=107124 width=290 float=center]Hinsdalite@Pyromorphte 2.6cm[/pic] [pic id=108789 width=515 float=left]Hinsdalite to 6mm @ Pyromorphite[/pic] [b]Hinsdalite after Pyromorphite[/b] [b]France[/b] [b]Brittany, Finistère, Huelgoat, Poullaba vein[/b] [pic id=57797 width=400 float=left]Hinsdalite @ Pyromorphite FOV 8mm[/pic] [b]Honessite after Millerite[/b] [b]USA[/b] [b]Kentucky, Lincoln Co., Halls Gap[/b] [pic id=231206 width=385 float=left]Honessite @ Millerite ~3cm wide[/pic] [pic id=179884 width=417 float=center]Honessite after Millerite 6.2cm wide[/pic] [b]Huntite after Hydromagnesite[/b] [b]Czech Republic[/b] [b]Moravia (Mähren; Maehren), South Moravia Region, Hrubšice, Oslavany, U Pustého Mlýna Quarry[/b] [pic id=109193 width=400 float=left]Huntite after Hydromagnesite[/pic] [pic id=109194 width=400 float=center]Huntite after Hydromagnesite[/pic] [b]Hydrocerussite afer Anglesite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb, Tsumeb Mine (Tsumcorp Mine)[/b] [pic id=290656 width=430 float=left]Hydrocerussite @ Anglesite 8.4cm[/pic] [b]Hydrocerussite after Cerussite[/b] [b]Namibia[/b] [b]Otjikoto (Oshikoto) Region, Tsumeb[/b] [pic id=38165 width=355 float=left]Hydrocerussite @ Cerussite 3.6cm[/pic] [pic id=149597 width=445 float=center]A 6mm Hydrocerussite @ Cerussite[/pic] The alteration of the specimen on the left is only skin deep. [b]Hydrotalcite after Spinel[/b] [b]USA[/b] [b]New York, Orange Co., Town of Warwick, Amity[/b] [pic id=281462 width=400 float=left]Hydrotalcite after Spinel ~7cm wide[/pic] [b]Hydroxylapatite after Gypsum[/b] [b]Mexico[/b] [b]Durango, Mun. de Mapimí, Mapimí, Asterillo Mine[/b] [pic id=337090 width=415 float=left]Hydroxylapatite after Gypsum 4.9cm tall[/pic] [pic id=337091 width=392 float=center]Close up of left[/pic] [b]Ice after water[/b] [b]Canada[/b] [b]Ontario, Welland Co., Niagara Falls[/b] [pic id=260172 width=400 float=left]Ice after water & water ~1Km[/pic] Strictly speaking ice after water is not a pseudomorph, because water is not considered to be a mineral, but I thought it might be fun to include them here to start people thinking. [b]Ice after Water[/b] [b]Sweden[/b] [b]Uppland, Uppsala[/b] [pic id=205087 width=400 float=left]Ice after water 1cm[/pic] [pic id=205074 width=400 float=center]Ice after Water ~2cm[/pic] [pic id=205090 width=400 float=left]Ice after Water 1.5 to 3cm[/pic] [pic id=205096 width=400 float=center]Ice after water ~2cm[/pic] [b]Imogolite after pumice[/b] [b]Japan[/b] [b]Honshu Island, Kanto Region, Tochigi Prefecture, Fukaiwa, Kanuma[/b] [pic id=143668 width=400 float=left]Imogolite after pumice 0.6cm wide [/pic] [b]Iriginite after Umohoite & Calcurmolite[/b] [b]Kazakhstan[/b] [b]Almaty Province (Almaty Oblysy; Almati Oblast'), Chu-Ili Mts, Kyzylsai Mo-U deposit[/b] [pic id=152945 width=410 float=left]Iringite @ Umohoite 4cm wide[/pic] [pic id=152944 width=387 float=center]Close up of left[/pic] [pic id=152947 width=410 float=left]Iriginite @ Umohoite 4.5cm[/pic] Click here to view [url=http://www.mindat.org/mesg-82-202970.html][b]Pseudomorphs & Replacements A & B[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-225691.html][b]Pseudomorphs & Replacements C[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-202977.html][b]Pseudomorphs & Replacements J to M[/b][/url]. Click here for [url=http://www.mindat.org/mesg-82-225739.html][b]Pseudomorphs & Replacements N to P[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-207865.html][b]Pseudomorphs & Replacements Quartz[/b][/url]. Click here to view [url=http://www.mindat.org/mesg-82-202976.html][b]Pseudomorphs & Replacements R to Z[/b][/url]. Click here to view [b][url=http://www.mindat.org/msgboard-82.html]Best Minerals P[/url][/b], click here to view and here for [url=http://www.mindat.org/forum.php?tab=65][b]Best Minerals A to Z[/b][/url] and here for [url=http://www.mindat.org/mesg-63-159134.html][b]Fast Navigation of completed Best Minerals articles[/b].[/url] http://www.mindat.org/forum.php?read,82,207457,207457#msg-207457 Sat, 18 May 2013 21:30:32 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,82,207457,240263#msg-240263 http://www.mindat.org/forum.php?read,82,207457,240263#msg-240263 I suspect you are right. At one time Scot Williams was a partner with Dave new in Southwest minerals (I think that was the name of their company) which got and sold a lot of good mineral specimens while the partnership lasted. I only met him a couple of times.]]> Rock Currier Best Minerals P Fri, 04 Nov 2011 07:30:36 +0000 http://www.mindat.org/forum.php?read,82,207457,240141#msg-240141 http://www.mindat.org/forum.php?read,82,207457,240141#msg-240141 Kelly Nash Best Minerals P Wed, 02 Nov 2011 21:14:08 +0000 http://www.mindat.org/forum.php?read,82,207457,212075#msg-212075 http://www.mindat.org/forum.php?read,82,207457,212075#msg-212075

Ice and water are related by a PHASE TRANSITION, which has nothing to do with pseudomorph formation. It is obvious that the ice crystals do not exhibit the shape of the body of water they formed from. This has nothing to do with the question if water is a mineral or not.]]> Peter Haas Best Minerals P Fri, 28 Jan 2011 01:47:02 +0000 http://www.mindat.org/forum.php?read,82,207457,211347#msg-211347 http://www.mindat.org/forum.php?read,82,207457,211347#msg-211347
> Dolomite after calcite, Santa Eulalia, Mexico.
> Good specimen. It could be a little better in
> focus. What makes you think it is dolomite after
> calcite as opposed to one of the other
> rhombohedral carbonates?

Trusting the label, mostly. I'll try to see if there are any tests I can do that won't mess it up -- maybe a little acid out of sight.

> Dolomite after calcite, Gánt, Vértes Mts.,
> Fejér Co., Hungary. Looks a bit overexposed. Also
> are you sure its dolomite?

Ditto on this one, just going by the label. The sample is pretty light colored and doesn't show a lot of relief, but maybe I can fiddle with the pic a little or shoot it again.

> Epidote after quartz Pinaleño Mts, Aravaipa
> District, Graham Co., Arizona. It could be
> epidote, but I don't see any hexagonal crystal
> shape here. Is it the photo that doesn't show the
> hexagonal shape of quartz?

Definitely the photo -- if you have this sample in hand, there's no doubt it is/was quartz. I'll try to add another angle that shows it off better.

The main question I've asked myself about this piece is whether the epidote is a replacement or inclusions. I think I've bought into replacement on the basis of the irregular, scalloped interface at the boundary between the epidote and the islands of remnant quartz, but I think you'd need a thin section to really get a look.

> Goethite after gypsum Santa Eulalia District, Mun.
> de Aquiles Serdán, Chihuahua, Mexico. Is there
> some reason you call it Goethite after Gypsum and
> not Limonite after Gypsum?

Once again the label and "common usage" I've seen on other examples. I'd have no beef going with limonite instead, unless you can suggest a test to distinguish the two.

> Goethite after pyrite, Copper Mountain, Prince of
> Wales Island, Alaska, USA Good picture but out of
> focus. At some point we will need to cut back on
> the Goethite/Limonite pseudos after pyrite etc. I
> knocked back a lot of them already, but will
> probably need to cull them more as the list grows.

I'll shoot it again. I agree with you that this is a common enough pseudomorph that the criteria should eventually shift to truly the best examples. This one isn't up to Pelican Point, but I've never seen it from this area and was pretty surprised at the size and sharpness.

> Hematite after epidote Bessemer Ridge, Green
> Mountain, North Bend, King Co., Washington, USA.
> Yes worthy of inclusion, but out of focus.

I'm looking forward to improving my photography. Another reshoot.

> Illite after Halite, Auburn, Nemaha Co., Nebraska,
> USA. Yes, this one is better than what we have and
> is worthy of inclusion, but why do you call it
> illite rather than mud or clay. Nothing wrong with
> the name illite, but I wonder if you have a reason
> other that that was on the label when I bought
> it.

Once again, just the label. All three of these pieces on MinDat are labeled as illite (baaaa...), all are labeled as from Scott Williams, so I suspect someone decided to call the clay there illite. I tried to sniff around for information on the locality; there are numerous references to illite in the Nemaha region as a common weathering product and a specific geologic unit, but that's all I have to go on.

> Keep on trucking!

Thanks -- all good fun.

I'm sort of breaking my own rule of not mis-posting between the pseudo lists, but while looking for examples of epidote after garnet at the Garnet Hill loc in Calaveras County, I was reminded of the impressive quartz after garnet samples found there. I linked to the one good example posted -- wish I had one of those!]]> Don Windeler Best Minerals P Sat, 22 Jan 2011 08:53:24 +0000 http://www.mindat.org/forum.php?read,82,207457,211045#msg-211045 http://www.mindat.org/forum.php?read,82,207457,211045#msg-211045 OK, Its devil's advocate time again.

Dolomite after calcite, Santa Eulalia, Mexico. Good specimen. It could be a little better in focus. What makes you think it is dolomite after calcite as opposed to one of the other rhombohedral carbonates?

Dolomite after calcite, Gánt, Vértes Mts., Fejér Co., Hungary. Looks a bit overexposed. Also are you sure its dolomite?

Epidote after quartz Pinaleño Mts, Aravaipa District, Graham Co., Arizona. It could be epidote, but I don't see any hexagonal crystal shape here. Is it the photo that doesn't show the hexagonal shape of quartz?

Goethite after gypsum Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico. Is there some reason you call it Goethite after Gypsum and not Limonite after Gypsum?

Goethite after pyrite, Copper Mountain, Prince of Wales Island, Alaska, USA Good picture but out of focus. At some point we will need to cut back on the Goethite/Limonite pseudos after pyrite etc. I knocked back a lot of them already, but will probably need to cull them more as the list grows.

Hematite after epidote Bessemer Ridge, Green Mountain, North Bend, King Co., Washington, USA. Yes worthy of inclusion, but out of focus.

Illite after Halite, Auburn, Nemaha Co., Nebraska, USA. Yes, this one is better than what we have and is worthy of inclusion, but why do you call it illite rather than mud or clay. Nothing wrong with the name illite, but I wonder if you have a reason other that that was on the label when I bought it.

Keep on trucking!]]> Rock Currier Best Minerals P Thu, 20 Jan 2011 08:40:33 +0000 http://www.mindat.org/forum.php?read,82,207457,210567#msg-210567 http://www.mindat.org/forum.php?read,82,207457,210567#msg-210567 Rock Currier Best Minerals P Sun, 16 Jan 2011 23:30:24 +0000 http://www.mindat.org/forum.php?read,82,207457,210564#msg-210564 http://www.mindat.org/forum.php?read,82,207457,210564#msg-210564 I have added a picture pf plancheite after dioptase from Tantara, it is the sister of the speciment dioptase after calcite on the right, also in my collection. These are old speciments cheriched by Belgian collectors!
All the best
Valère]]> Valere Berlage Best Minerals P Sun, 16 Jan 2011 23:25:57 +0000 http://www.mindat.org/forum.php?read,82,207457,210548#msg-210548 http://www.mindat.org/forum.php?read,82,207457,210548#msg-210548
Per comments in "A to C", I'm posting a set of specimens that hit localities and/or replacements not well represented in the articles at present, rather than saying these are all The Best. Thank you for your efforts!


Dolomite after calcite
Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico

Dolomite after calcite
Gánt, Vértes Mts., Fejér Co., Hungary

Epidote after quartz
Pinaleño Mts, Aravaipa District, Graham Co., Arizona

Goethite after gypsum
Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico

Goethite after pyrite
Copper Mountain, Prince of Wales Island, Alaska, USA
Goethite after pyrite probably should get maxed out in the article at some point – lots of places to be found.

Hematite after epidote
Bessemer Ridge, Green Mountain, North Bend, King Co., Washington, USA
Pseudo / loc is already represented, but this is a pretty good example.

Illite after halite
Auburn, Nemaha Co., Nebraska, USA
This loc / pseudo mentioned by Jeff earlier in the thread. This piece is one of my favorite pseudomorphs – really like how it has retaining the hoppering on the halite cubes even though they’re flattened out, almost like bas-relief]]> Don Windeler Best Minerals P Sun, 16 Jan 2011 21:05:16 +0000 http://www.mindat.org/forum.php?read,82,207457,210422#msg-210422 http://www.mindat.org/forum.php?read,82,207457,210422#msg-210422
Ed, if you specialize in pseudos, why don't you give some consideration to writing up some descriptive comments about the various pseudos that you know about. I can assure you they will be welcome.

Peter, Yes you are right about the Ice, but I feel inclined to leave the pictures in the article with suitable explanation that most consider these not to be real pseudomorphs, but I want to leave them in there to start people thinking about how minerals can change, and they perhaps more commonly do than not. Mercury is a liquid right? Why should we not claim water as a mineral. This is part of my devils advocate position to try and get the IMA and other mineralogists to expand their definition of what minerals are and to reclaim territory lost to other sciences so that we can start the pendulum swinging back the other way and to bring mineralogy more into the mainstream of society and the sciences.

Somewhere I have a picture of Atacamite after mouse that I am going to put in the article. I would love to have a picture of the Copper after ancient Peruvian mine that is in the American Museum of Natural History. I would add that to the article in a heart beat. Perhaps I will badger George Harlow to see if I can get one to upload to our galleries.]]> Rock Currier Best Minerals P Sat, 15 Jan 2011 12:29:15 +0000 http://www.mindat.org/forum.php?read,82,207457,210402#msg-210402 http://www.mindat.org/forum.php?read,82,207457,210402#msg-210402 Peter Haas Best Minerals P Sat, 15 Jan 2011 05:39:52 +0000 http://www.mindat.org/forum.php?read,82,207457,210347#msg-210347 http://www.mindat.org/forum.php?read,82,207457,210347#msg-210347 Alex Homenuke Best Minerals P Fri, 14 Jan 2011 21:04:53 +0000 http://www.mindat.org/forum.php?read,82,207457,210345#msg-210345 http://www.mindat.org/forum.php?read,82,207457,210345#msg-210345
Don't forget about illite after halite - see [www.mindat.org] and also [www.mindat.org]

Is ice after water really a pseudomorph - if so, I have a *small* supply in my backyard I'd love to sell you. (:P)]]> Jeff Weissman Best Minerals P Fri, 14 Jan 2011 20:51:44 +0000 http://www.mindat.org/forum.php?read,82,207457,210343#msg-210343 http://www.mindat.org/forum.php?read,82,207457,210343#msg-210343 Alfredo Petrov Best Minerals P Fri, 14 Jan 2011 20:24:16 +0000 http://www.mindat.org/forum.php?read,82,207457,210341#msg-210341 http://www.mindat.org/forum.php?read,82,207457,210341#msg-210341 Ed Godsey Best Minerals P Fri, 14 Jan 2011 20:03:40 +0000 http://www.mindat.org/forum.php?read,82,207457,208092#msg-208092 http://www.mindat.org/forum.php?read,82,207457,208092#msg-208092 I know what you mean and there must be many similar examples in the various pseudomorphs I have put in the Best Mineral gallery. However I can't resist asking people such questions in case they may know the facts behind calling them such and such after what ever they were. In most cases they don't. That doesn't mean that I won't put them in the article, but sometimes it helps correct mistakes that have been made and pseudomorphs have more questions about their origins and any other group of minerals I think.]]> Rock Currier Best Minerals P Thu, 30 Dec 2010 21:28:16 +0000 http://www.mindat.org/forum.php?read,82,207457,208079#msg-208079 http://www.mindat.org/forum.php?read,82,207457,208079#msg-208079
Steve Rust]]> Steve Rust Best Minerals P Thu, 30 Dec 2010 19:17:27 +0000 http://www.mindat.org/forum.php?read,82,207457,207963#msg-207963 http://www.mindat.org/forum.php?read,82,207457,207963#msg-207963 Rock Currier Best Minerals P Wed, 29 Dec 2010 23:54:39 +0000 http://www.mindat.org/forum.php?read,82,207457,207913#msg-207913 http://www.mindat.org/forum.php?read,82,207457,207913#msg-207913 www.mindat.org].

Steve Rust]]> Steve Rust Best Minerals P Wed, 29 Dec 2010 17:45:29 +0000 http://www.mindat.org/forum.php?read,82,207457,207885#msg-207885 http://www.mindat.org/forum.php?read,82,207457,207885#msg-207885 Ralph Bottrill Best Minerals P Wed, 29 Dec 2010 13:26:31 +0000 http://www.mindat.org/forum.php?read,82,207457,207640#msg-207640 http://www.mindat.org/forum.php?read,82,207457,207640#msg-207640 Yes, please make all the comments and corrections that you would like. For comments other than outright mistakes or errors, write them up just like you would if you were writing the article. In these cases, I will just take your text and drop it in under the images for a particular locality and put your name at the bottom of the text with the year you submitted it. Would you like to take a crack at writing a Best Minerals article about a particular mineral?]]> Rock Currier Best Minerals P Mon, 27 Dec 2010 19:40:24 +0000 http://www.mindat.org/forum.php?read,82,207457,207588#msg-207588 http://www.mindat.org/forum.php?read,82,207457,207588#msg-207588
Thank you for the reply.
No, I have 8 of the 15 known forms. A few others can be seen in my gallery.
I still have to photograph quite a few different forms.
I will post the comment and links to the Best of gallery Hematite-from Argentina to Morocco.
In this gallery, a specimen is also labeled hematite after pyrite ? from the Brézouard.
This is no pseudo either. De crystal form is hexagonal and is just another type of another vein. This type is locally known as " la carrée ".

Thanks again.
Take care and best regards.

Paul.]]> Paul De Bondt Best Minerals P Mon, 27 Dec 2010 10:05:36 +0000 http://www.mindat.org/forum.php?read,82,207457,207585#msg-207585 http://www.mindat.org/forum.php?read,82,207457,207585#msg-207585
The specimen of Gibbsite you have shown of mine I dont think is a Psudo. The Gibbsite appears to be coating the crocoite crystals not replacing them. The crocoite crystals that have fallen out are in a very good condition.

Andrew t]]> Andrew Tuma Best Minerals P Mon, 27 Dec 2010 08:24:02 +0000 http://www.mindat.org/forum.php?read,82,207457,207569#msg-207569 http://www.mindat.org/forum.php?read,82,207457,207569#msg-207569 www.mindat.org] ?
The existing link goes to pseudomalachite (hard to tell if that one is a pseudomorph or not?)

Some possible additions: gibbsite after crocoite [www.mindat.org]
and gibbsite after dundasite: [www.mindat.org]

A fascinating collection that will keep us thinking for ages!]]> Ralph Bottrill Best Minerals P Mon, 27 Dec 2010 02:17:19 +0000 http://www.mindat.org/forum.php?read,82,207457,207567#msg-207567 http://www.mindat.org/forum.php?read,82,207457,207567#msg-207567 Thanks for the heads up about the Ste Marie hematites. I think I will take your comments and probably the image as well and transfer them to the Hematite article. You have only eight examples of the particularly rare form? I didn't think anyone was as big a pig as I was. I am not certain how it got into my head to do an article on pseudomorphs except that I suddenly realized that there had never been anything really comprehensive that had been written about them and that with the tremendous resource of the mindat image gallery, that for the first time it might be possible to do something like this. I knew it was going to be a big job, but I thought, well, I did the one one Quartz USA, or at least the framework, what could be bigger than that. Of course when I got into the Pseudomorph article a little ways, I realized that it was likely to be larger than quartz USA. Well, If I am sucessfull in creating a framework for them, then over time others can come along like you and Dennis with corrections and comments and descriptions for the many pseudos and their localities that I know little or nothing about and help make the project a success.

Dennis,
Ill find out what is going on with the New Mexico dolomite and get it fixed. Right now the article isn't an article, but just a selection of images that I must now slowly and painfully beat into shape and add the captions and make look as pretty as I can. The problem is of course basically that Pseudomorphs are not very pretty and it takes a mother to love them. After this is done, then we can start adding the text and comments about them, but I am not sure that I will get around to adding text and comments before Tucson.]]> Rock Currier Best Minerals P Mon, 27 Dec 2010 01:33:16 +0000 http://www.mindat.org/forum.php?read,82,207457,207564#msg-207564 http://www.mindat.org/forum.php?read,82,207457,207564#msg-207564
Denny]]> Dennis Tryon Best Minerals P Mon, 27 Dec 2010 00:29:54 +0000 http://www.mindat.org/forum.php?read,82,207457,207558#msg-207558 http://www.mindat.org/forum.php?read,82,207457,207558#msg-207558
What a huge task !!!!!!!!
How did you get it in your head to start this ????
Congrats man, it's a real delight.:)-D
I would like to thank you for selecting some of my specimens.
There is just a problem with the hematite after ? from Ste Marie.
Sorry to say but that's no pseudomorph. These are all hexagonal iron roses setting together. You can see it good in the big one at the lower right.
The Ste Marie hematite is something special.
The mineral is found in several paralel veins running up through the Brézouard granite.
The special thing is that every vein has his own crystal form. So I suppose that these veins where formed the one after the other otherwise all the structures would be the same, I guess.
The selected pic is the rarest form and is quite scarce in the district. It is locally known as " la mamelonnée ".
To my knowledge and from rumors in the area, there could be around 15 different forms.
In my collection, I have " only " 8 of them.
The Brézouard used to be a very prolific hematite occurence but with the local law, prohibiting collecting, who knows how many other forms could be hiding under the ground. We will probably never know.

I hope this helps. Keep the good work up !

Take care and best regards.

Paul.]]> Paul De Bondt Best Minerals P Sun, 26 Dec 2010 23:04:39 +0000 http://www.mindat.org/forum.php?read,82,207457,207491#msg-207491 http://www.mindat.org/forum.php?read,82,207457,207491#msg-207491 Rock Currier Best Minerals P Sun, 26 Dec 2010 08:39:25 +0000 http://www.mindat.org/forum.php?read,82,207457,207486#msg-207486 http://www.mindat.org/forum.php?read,82,207457,207486#msg-207486 Its looking a great introduction to pseudomorphs Rock!]]> Ralph Bottrill Best Minerals P Sun, 26 Dec 2010 05:43:17 +0000 http://www.mindat.org/forum.php?read,82,207457,207470#msg-207470 http://www.mindat.org/forum.php?read,82,207457,207470#msg-207470
Andrew]]> Andrew Tuma Best Minerals P Sat, 25 Dec 2010 23:28:24 +0000 http://www.mindat.org/forum.php?read,82,207457,207467#msg-207467 http://www.mindat.org/forum.php?read,82,207457,207467#msg-207467 Thanks for the update. It will be incorporated into the article when it gets a bit further along. I hope others will also chip in with corrections and advice for making the article better. Right now there is still a lot of work to be done just to get the images showing properly in the articles and the sizes adjusted to make them look pretty. After that we will start to do the corrections and add the descriptive text. I hope that others beside your self will help with this. It is a daunting to contemplate trying to do it all myself.]]> Rock Currier Best Minerals P Sat, 25 Dec 2010 23:05:41 +0000