Mindat Mineralogy Messageboard

Mindat Mineralogy Messageboard - Best Minerals D http://www.mindat.org/msgboard-70.html Thu, 23 May 2013 16:14:39 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,70,293885,293885#msg-293885 Darrellhenryite http://www.mindat.org/forum.php?read,70,293885,293885#msg-293885


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Click here for Best Minerals D and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.

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? This is a stub of an article to act as a place holder where people can contribute interesting facts about dendrites and bring to our attention good images of dendrites from various localities.

Dendrites
Black dendritic films of various visually indistinguishable black manganese oxides, may consist of Birnessite, Coronadite, Cryptomelane, Hollandite, Romanèchite, Todorokite or other species. Many manganese minerals have similar strong x-ray lines and line-broadening can make x-ray diffraction identification ineffectual. Potter and Rossman (1979) have found that infra-red spectroscopy has been helpful in verifying some dendrite mineralogy. Currently, there are no known manganese dendrites in the world which contain pyrolusite.


Dendrites ~3cm wide, Deforest Quarry, Inglewood, Peel Region, Ontario, Canada	© Maggie Wilson

This article has been created as a stub and a place holder waiting for someone to take it in hand and write the first draft of the article.

Click here for Best Minerals D and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.]]> Rock Currier Best Minerals D Sat, 05 Jan 2013 09:53:33 +0000 http://www.mindat.org/forum.php?read,70,279139,279139#msg-279139 Dravite http://www.mindat.org/forum.php?read,70,279139,279139#msg-279139 Best Minerals and here for Tourmaline group minerals, here for Chromium-dravite, here for Chromo-alumino-povondraite, here for Dravite, here for Elbaite, Afghanistan to Nigeria, here for Elbaite, Pakistan to Zambia here for Feruvite, here for Fluor Buergerite here for Fluor-dravite, here for Fluor-elbaite, here for Fluor-feruvite, here for Fluor-liddicoatite, here for Fluor-schorl, here for Foitite, here for Liddicoatite, here for Luinaite-(OH), here for Magnesiofoitite, here for Olenite, here for Oxy-dravite, here for Oxy-rossmanite, here for Oxy-schorl, here for Povondraite, here for Rossmanite, here for Schorl, here for Tsilaisite and here for Vanadium-dravite. Click here for Best Minerals T and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.

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?

Dravite: Trigonal: Dravite-Elbaite Series, Dravite-Schorl Series
Na(Mg₃)Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)


Dravite & Magnecite, Brumado, Bahia, Brazil 7.5cm wide	© Verrier.Frédéric

Most of the images below are of Dravite crystals that have not been analyzed but are called that because that was what was on their existing labels or because they had similarities to a few Dravites that had been analyzed from those particular localities. Before the advent of modern analytic equipment and methods, Dravite tourmaline crystals were mostly thought to be dravite because they were brown. However from the examples below you can see that the colors of this tourmaline variety can range from black, brown, amber to green in color. Mindat currently has (January 2013) 500 localities listed for Dravite so it is not a particularly rare mineral. The Hand Book of Mineralogy says crystals of 20 cm exist, though almost certainly larger ones are out there waiting to be found if they have not already been found.

Dravite
Afghanistan
Badakhshan Province (Badakshan Province; Badahsan Province), Khash & Kuran Wa Munjan Districts, Koksha Valley (Kokscha Valley; Kokcha Valley), Sar-e Sang (Sar Sang; Sary Sang)


Dravite 5.6cm wide	© CCURTO12

Dravite
Australia
Queensland, Mount Isa - Cloncurry area, Mount Isa district, May Downs Station


Dravite 7cm wide	© JSS


Dravite 7cm wide	© JSS


Dravite 8.4cm tall	© Rob Lavinsky


Dravite 8cm wide	© TK

Dravite
Australia
Western Australia, Upper Gascoyne Shire, Yinnietharra (Yinnietharra Station)


Dravite 7cm wide	© Tony Peterson


Dravite 6.5cm wide	© Oleg Lopatkin


Dravite 11.3cm wide	©


Dravite & Muscovite 9.7cm tall	© Steve Hardinger


Dravite 6cm wide	© Keith F Compton

Dravite
Australia
Western Australia, Upper Gascoyne Shire, Yinnietharra (Yinnietharra Station), Soklich Open Cut (Tomkap tourmaline mine)


Dravite 13.2cm wide	© Rob Lavinsky


Dravite 11cm wide	© Sue Koepke


Dravite 4.8cm wide	© Rob Lavinsky


Dravite 7cm wide	© Collectors Edge


Dravite 6.6cm wide	© Carles Millan


Dravite 8cm tall	© Mauro Rapazzini 2012


Dravite 4.9cm wide	© Rob Lavinsky


Dravite 5.5cm wide	©

Dravite
Brazil
Bahia, Brumado (Bom Jesus dos Meiras)


Dravite 2.9cm tall	© LucianaBarbosa.com


Dravite & Magnecite 7.5cm	© Verrier.Frédéric


Dravite 2.7cm tall	© Nicu Pascanu Collection

Dravite
Brazil
Bahia, Brumado (Bom Jesus dos Meiras), Serra das Éguas, Pedra Preta pit


Dravite 4.1cm wide	© Dan Weinrich Minerals


Dravite 6.9cm wide	© Dan & Diana Weinrich Minerals

Dravite
Brazil
Bahia, Brumado (Bom Jesus dos Meiras), Serra das Éguas, Pomba pit


Dravite 5.8cm wide	© Rob Lavinsky


Dravite 3.1cm wide	© JSS

Dravite
Brazil
Paraíba, Borborema mineral province, Pedra Lavrada, Serra Branca pegmatite


Dravite 5.9cm wide	© Dan & Diana Weinrich Minerals

Dravite
Burma
Mandalay Division, Pyin-Oo-Lwin District, Mogok Township, Pein-Pyit (Painpyit; Pyan Pyit), Pyant Gyi mine (Pyan Gyi)


Dravite FOV 2cm	© Pavel M. Kartashov

Dravite
Canada
Ontario, Hastings Co., Dungannon Township, Tait farm


Dravite & Quartz 6cm wide	©


Dravite 13cm tall	©


Dravite & Quartz 3cm wide	© David K. Joyce


3cm Dravite with Quartz	© David K. Joyce

Dravite
France
Midi-Pyrénées, Ariège, Saint-Girons, Soueix-Rogalle, Saint-Sernin, Salat river alluvials


Dravite 5mm wide	© François Périnet


Dravite 6mm wide	© François Périnet

Dravite
Greenland
Kitaa (West Greenland) Province, Nuuk (Godthåb), Ameralik fjord, Qaarusulik


Dravite 15cm long	©


Dravite 12cm center	© AÖ

Dravite
Italy
Aosta Valley, Valtournanche Valley, Valtournanche, Breuil-Cervinia, Plateau Rosa Pass


Dravite 6.2cm long	©

Dravite
Italy
Piedmont, Verbano-Cusio-Ossola Province, Ossola Valley, Beura-Cardezza, Beura Quarries


Dravite with Phengite 17.5cm wide	© Mauro Rapazzini 2012


1mm Dravite crystal	© Luigi Mattei

Dravite
Italy
Piedmont, Verbano-Cusio-Ossola Province, Ossola Valley, Crevoladossola, Crevoladossola quarry


Dravite 2.5mm tall	© Enrico Bonacina


Dravite 1.8mm tall	© Enrico Bonacina


Dravite 3.1mm wide	© Enrico Bonacina


1.84mm Dravite with Pyrrhotite	© Chinellato Matteo


Dravite 3.4mm tall	© Enrico Bonacina

Dravite
Kenya
Coast Province, Taita Taveta District, Yellow Tourmaline Mine


Dravite 1cm wide	© Van King

Dravite
Mexico
Sonora, Mun. de Santa Cruz, Santa Cruz


Dravite & Quartz ~8cm wide	©


Dravite 4.1cm tall	© Weinrich Minerals, Inc.

Dravite
Mozambique
Zambezia Province, Alto Ligonha District


Dravite 1.5cm tall	© Martins da Pedra

Dravite
Nepal
Bheri Zone, Jajarkot District, Dravite locality


Dravite 8cm tall	© Weinrich Minerals, Inc.


Dravite 2cm wide	© JR Montgomery


Dravite 3cm wide	© Rockpick Legend Co.

Dravite
Norway
Akershus, Asker, Borgenåsen


Dravite ~5cm tall	© Knut Eldjarn

Dravite
Norway
Aust-Agder, Risør, Akland, Moland


Dravite 2.5cm tall	© Olav Revheim

Dravite
Pakistan
Gilgit-Baltistan (Northern Areas), Baltistan, Skardu District, Skardu


Dravite 3.5cm tall	© Jose Zendrera

Dravite
Russia
Eastern-Siberian Region, Transbaikalia (Zabaykalye), Chitinskaya Oblast', Krasnyi Chikoy, Malkhan pegmatite field (Malchan; "Malechansk")


Dravite 4.5cm tall	© Dan & Diana Weinrich Minerals


Dravite on Quartz 2.9cm wide	© Oleg Lopatkin


Dravite 3.7cm tall	© Oleg Lopatkin

Dravite
Russia
Eastern-Siberian Region, Transbaikalia (Zabaykalye), Chitinskaya Oblast', Menza District, Vodorazhdelnoye (Vodorazdelnaya)


Dravite 4.2cm wide	© Oleg Lopatkin

Dravite
Slovenia
Dravograd (Unterdrauburg), Dobrova


Dravite ~7.5cm wide	©


Dravite & Muscovite 5cm wide	© Jakub Jirásek

Dravite
Switzerland
Wallis (Valais), Binn Valley, Im Feld (Imfeld; Feld; Fäld), Lengenbach Quarry


Dravite FOV 6mm	© Stephan Wolfsried


FOV 2mm	© Stephan Wolfsried


3mm Dravite crystal	© jo-esche 2007

Dravite
Tanzania
Arusha Region, Lelatema Mts, Merelani Hills (Mererani)


Dravite 2.3cm tall	© Rob Lavinsky


Dravite 1.4cm wide	© Rob Lavinsky

Dravite
USA
Connecticut, Fairfield Co., Bethel, Biermann (Bethel) quarries


Dravite 7.2cm wide	© Jasun McAvoy


Dravite 12cm wide	© Michael Shaw


Dravite 8cm tall	© Michael Otto


Dravite 3.6cm tall	©


Dravite 7.5cm wide	© Michael Otto


Dravite ~5cm tall	© 2006 Jeremy Zolan

Dravite
USA
Massachusetts, Hampden Co., Chester, Chester Emery Mines


Dravite 8.9cm wide	© Henry Minot 2011

Dravite
USA
New Hampshire, Grafton Co., Orford, Orford soapstone quarries


Dravite 10cm wide	© J.Ralph

Dravite
USA
New York, St. Lawrence Co., Gouverneur, Reese Farm (Dale Bush Farm; Jones Farm)


Dravite, Fluorapatite & Albite 4.9cm wide	© Lavinsky


Dravite 1.5cm wide	© 2002 John H. Betts


Dravite 2.37cm tall	© Jasun McAvoy

Dravite
Vietnam
Yenbai (Yen Bai) Province, Luc Yen


Dravite 3.4cm wide	© 2008 Steve Hardinger

Dravite
Zambia
North-Western Province, Mwinilunga (Mwinlunga) District, Kaminguli River area, Kampanda


Dravite xls. up to 4cm long	© S. Vrána

Click here to view Best Minerals and here for Tourmaline group minerals, here for Chromium-dravite, here for Chromo-alumino-povondraite, here for Dravite, here for Elbaite, Afghanistan to Nigeria, here for Elbaite, Pakistan to Zambia here for Feruvite, here for Fluor Buergerite here for Fluor-dravite, here for Fluor-elbaite, here for Fluor-feruvite, here for Fluor-liddicoatite, here for Fluor-schorl, here for Foitite, here for Liddicoatite, here for Luinaite-(OH), here for Magnesiofoitite, here for Olenite, here for Oxy-dravite, here for Oxy-rossmanite, here for Oxy-schorl, here for Povondraite, here for Rossmanite, here for Schorl, here for Tsilaisite and here for Vanadium-dravite. Click here for Best Minerals T and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.

[The first draft of the article of the tourmaline group mineral Dravite was finished in January 2013]]]> Rock Currier Best Minerals D Fri, 14 Dec 2012 11:21:33 +0000 http://www.mindat.org/forum.php?read,70,130421,268930#msg-268930 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268930#msg-268930 I must admit I spaced right past your existing article, and that will be just fine for adding some or most of the images to the best minerals article. I don't have the time right now and may not have the time till the end of September. A death in the family will require my presence in Illinois. In addition I need to give a lecture in Texas, visit some quartz mines in Arkansas and the Denver Gem and Mineral show will require most of my time. But it will eventually get done.]]> Rock Currier Best Minerals D Mon, 20 Aug 2012 18:10:16 +0000 http://www.mindat.org/forum.php?read,70,130421,268904#msg-268904 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268904#msg-268904
Regards Trevor]]> Trevor Dart Best Minerals D Mon, 20 Aug 2012 12:40:58 +0000 http://www.mindat.org/forum.php?read,70,130421,268894#msg-268894 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268894#msg-268894
I don't quite get your last post... I did the mindat article with some pictures of the davidites, just not the maps. I assume you checked both links I put in my earlier post?

Trevor]]> Trevor Dart Best Minerals D Mon, 20 Aug 2012 08:13:50 +0000 http://www.mindat.org/forum.php?read,70,130421,268862#msg-268862 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268862#msg-268862 I should be able to figure that out, thanks. I think you should make a mindat article out of what you have written. We will eventually have a method of searching for Mindat Articles. If you do, that won't stop me from using much of what you wrote in the best mineral article.]]> Rock Currier Best Minerals D Sun, 19 Aug 2012 19:53:21 +0000 http://www.mindat.org/forum.php?read,70,130421,268825#msg-268825 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268825#msg-268825
Adobe reader - which is free - allows you to take a snapshot of any section of the document and paste it into another document such as a word file, or straight into MS Paint. You can then save it as a JPEG file. The trick I found is to zoom in on the document, then select the area to be copied and it will save at a higher resolution. I'll upload the map pictures this week for you anyway.

Regards

Trev]]> Trevor Dart Best Minerals D Sun, 19 Aug 2012 12:37:29 +0000 http://www.mindat.org/forum.php?read,70,130421,268768#msg-268768 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268768#msg-268768 Rock]]> Rock Currier Best Minerals D Sat, 18 Aug 2012 19:54:20 +0000 http://www.mindat.org/forum.php?read,70,130421,268710#msg-268710 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268710#msg-268710
You can also copy a photo to the clipboard (Select an area and copy it). Most photo programs will allow you to paste an image from the clipboard - Although the quality will probably degrade a bit.]]> David Von Bargen Best Minerals D Sat, 18 Aug 2012 12:15:22 +0000 http://www.mindat.org/forum.php?read,70,130421,268706#msg-268706 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268706#msg-268706 Rock Currier Best Minerals D Sat, 18 Aug 2012 11:50:33 +0000 http://www.mindat.org/forum.php?read,70,130421,268703#msg-268703 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268703#msg-268703 David Von Bargen Best Minerals D Sat, 18 Aug 2012 11:29:26 +0000 http://www.mindat.org/forum.php?read,70,130421,268697#msg-268697 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268697#msg-268697 The article is interesting but it is in a PDF format and it is something that I can easily manipulate without the full blown Adobie Acrobat soft ware which is now about $500. Can you provide a the text and images in a not PDF format. The images perhaps in jpg form?
Rock]]> Rock Currier Best Minerals D Sat, 18 Aug 2012 10:13:09 +0000 http://www.mindat.org/forum.php?read,70,130421,268636#msg-268636 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268636#msg-268636
That's fine. Use whatever you want, including photos or maps. I can upload the higher resolution map files if you would like.

Regards

Trevor]]> Trevor Dart Best Minerals D Fri, 17 Aug 2012 21:11:28 +0000 http://www.mindat.org/forum.php?read,70,130421,268621#msg-268621 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268621#msg-268621 Thanks for the update. Would you mind if I used some, most of or all of your article in the Davidite best minerals article? I would suggest that in your article that you at least put your name at the top or bottom of the article so that people reading the text can know who the author is.]]> Rock Currier Best Minerals D Fri, 17 Aug 2012 19:57:27 +0000 http://www.mindat.org/forum.php?read,70,130421,268578#msg-268578 Re: Davidite-(Ce) & (La) http://www.mindat.org/forum.php?read,70,130421,268578#msg-268578
Just thought I could give you an update on the Billeroo prospect and the Radium Hill mines. I have uploaded an article here on mindat about the Billeroo prospect that covers the history, geology, mode of formation, etc. Billeroo Article or there is a PDF version of my article on the Broken Hill Mineral Club website Broken Hill Mineral Club which has location maps included.

The Radium Hill mine is best described in two South Australian Geological Survey publications - Bulletin 30 - Uranium Deposits in South Australia (1954) by Dickenson and Sprigg and - Bulletin 34 - Regional Geology and Mineral Resources of the Olary Province (1958) by Campana and King. I don't know whether you can get access to either of these. I bought my copies via the web booksellers.

I'm hoping to go down to Plumbago over the last weekend of September.

Trevor]]> Trevor Dart Best Minerals D Fri, 17 Aug 2012 13:49:56 +0000 http://www.mindat.org/forum.php?read,70,216184,219895#msg-219895 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219895#msg-219895
I will look forward to the day when you can more fully participate with is in building this site. You will be welcome.]]> Rock Currier Best Minerals D Sat, 09 Apr 2011 09:54:46 +0000 http://www.mindat.org/forum.php?read,70,216184,219846#msg-219846 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219846#msg-219846
I am 63 and (despite the constant progress of medecine) it takes me long efforts to publish on the web. I'm just pactising Word, Pdf, Ppt, Excel and sometimes Access. Within 2 years I will be retired and (they say) I expect plenty freetime at that time, enough to fully collaborate with the other desperate collectors, scientists and goodwilling people your are.

Therefore I think it is untimely to promote me to the upper level, or at least it would be worth do be done but I do not promise to feed the databank as generously as I imagine I will do within two years.

Anyway, I'm sure Mindat will survive (despite it needs from you to sum up huge work and to face many disappointments)

So, please, wait for me, i'm coming soon !

Cheers

Jean

Azogue is my surname because I am, among other perversions, an expert of mercury mines)]]> Azogue Best Minerals D Fri, 08 Apr 2011 17:37:26 +0000 http://www.mindat.org/forum.php?read,70,216184,219669#msg-219669 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219669#msg-219669 Thanks for the pictures. Just to let you know we can not use them unless they are first uploaded to the mindat gallery. Do you know how to do that? If you would like to do that, let me know and I will raise you to a level one and give you a link to the instructions on how to upload images to the mindat gallery. We don't show any images in Best Minerals unless they have first been uploaded to the mindat gallery. When you upload the images you will choose between several different flavors of copyright protection. Also, we rarely show pictures in Best Minerals other than images of the entire specimen, although if there are interesting features on the specimen we will sometimes show the full picture and next to it, a close up of the interesting part. Your pictures are pretty good and I would imagine that at least one or two of them would be included in the article. However, the person who writes the Best Mineral article about a particular country has the authority to choose what ever images they wish to put in the article. Thats about all the reward they get other than their name on the article for doing the large amount of work involved.]]> Rock Currier Best Minerals D Wed, 06 Apr 2011 20:31:25 +0000 http://www.mindat.org/forum.php?read,70,216184,219665#msg-219665 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219665#msg-219665
[attachment 29741 Manganocalcite-CAM54833-06.jpg]]]> Feraud Jean Best Minerals D Wed, 06 Apr 2011 20:12:39 +0000 http://www.mindat.org/forum.php?read,70,216184,219664#msg-219664 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219664#msg-219664
In fact, everybody should be aware that the chemical and mineralogical composition of Trepca carbonates slide within a kind of double pyramid having at its peaks dolomite, ankerite, siderite, kutnahorite, calcite, rhodochrosite...

[attachment 29737 Images_AuktionImages_313.jpg]

[attachment 29738 Images_AuktionImages_314.jpg]

[attachment 29739 Manganocalcite-CAM54833-01.jpg]

Warm regards

Jean]]> Feraud Jean Best Minerals D Wed, 06 Apr 2011 20:05:16 +0000 http://www.mindat.org/forum.php?read,70,216184,219402#msg-219402 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,219402#msg-219402 www.mindat.org]

This mine produced outstanding dolomites. Ask Roger Lang for an appropriate photo.
There are two more German localities that merit to be included in a best-of-species list:

(1) Grevenbrück: [www.mindat.org]
(2) Rammelsbach: [www.mindat.org]

Both produced dolomite pseudomorphs after calcite. I'm not familiar with the situation at Grevenbrück, but Rammelsbach produced plates to several tens of centimeters with pseudomorphs to more than 10 cm in size. When they were first discovered, they were abundant, but the productive zone is now quarried away. Large specimens were often rather boring, though, because of the uniform crystallization and lack of associated minerals. I will try to contribute a picture.]]> Peter Haas Best Minerals D Mon, 04 Apr 2011 13:00:24 +0000 http://www.mindat.org/forum.php?read,70,216184,216576#msg-216576 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,216576#msg-216576 I have tweaked the formatting a little to bring it more in line with the rest of the articles.]]> Rock Currier Best Minerals D Fri, 11 Mar 2011 12:13:36 +0000 http://www.mindat.org/forum.php?read,70,216184,216426#msg-216426 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,216426#msg-216426 That is indeed a fine dolomite and might be included in the article, however it would first have to be uploaded to the Mindat image bank. Do you know how to do this procedure?]]> Rock Currier Best Minerals D Wed, 09 Mar 2011 22:12:01 +0000 http://www.mindat.org/forum.php?read,70,216184,216425#msg-216425 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,216425#msg-216425 The Rabbit Lake Mine at Wollaston Lake, Saskatchewan produced some nice dolomites that you may want to include. An example follows.
Michael

[attachment 29224 1033Dolomite.jpg]]]> Michael Shaw Best Minerals D Wed, 09 Mar 2011 21:56:53 +0000 http://www.mindat.org/forum.php?read,70,216184,216409#msg-216409 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,216409#msg-216409 Co. Sligo, Ireland has produced abundant and excellent specimens of Dolomite, which are frequently seen at mineral shows in the UK. A few are pictured under that locality, especially from Aughamore Quarry and Abbeytown mine & quarry. Stephen Moreton has collected many excellent specimens (including one large one in my collection), and will be knowlegeable about the locality. I am sorry that I don't have the equipment to photograph my own. Becky]]> Becky Coulson Best Minerals D Wed, 09 Mar 2011 19:54:37 +0000 http://www.mindat.org/forum.php?read,70,216184,216320#msg-216320 Re: Dolomite http://www.mindat.org/forum.php?read,70,216184,216320#msg-216320 Nice start. For some reason the BB code using height instead of width does not seem to allow the images to go next to other but insists on putting one above the other, and I have not figured out yet what is going on with that. When I get the time, Ill tweak your images around a little to make them look better.]]> Rock Currier Best Minerals D Tue, 08 Mar 2011 22:50:57 +0000 http://www.mindat.org/forum.php?read,70,216184,216184#msg-216184 Dolomite http://www.mindat.org/forum.php?read,70,216184,216184#msg-216184 Best Minerals D and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.

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?

Dolomite
CaMg(CO₃)₂ trigonal


Dolomite, Azcárate Quarry, Eugui, Esteribar, Navarre, Spain 4.4cm wide	© fabreminerals

Dolomite is a common rock forming mineral in sedimentary and metamorphic (marble) rocks. It is also formed in hydrothermal veins, magnesium rich altered igneous rocks and rarely in pegmatites. Many million tons of fine grained dolomite are quarried each year for use as aggregate.

The mineral forms large rhombohedral crystals, some steep rhombohedrons forming prisms and rarely as tabular crystals. Dolomite is most commonly available as drusy coatings of small crystals forming the matrix for sedimentary specimens of sulfides and fluorite. Good crystals of dolomite are relatively rare. Although they are not as large as other specimens the color of cobaltain dolomite makes specimens from Morocco and Congo very popular with collectors. Dolomite is a relatively common mineral pseudomorphing other carbonates (especially calcite) and forming fine grained coatings on other minerals. Another desirable habit is the saddle shaped crystals (deformed, offset rhombohedrons).

Dolomite
Australia
Tasmania, Queenstown district, Mount Lyell Mines, Prince Lyell Mine


Dolomite with Hematite 3.5cm wide	© R. Bottrill

Dolomite
Australia
Tasmania, Zeehan district, North Dundas, Renison Bell Mine


Dolomite with secondary Dolomite ~2.5cm wide	© R. Bottrill 2006

Dolomite
Australia
Western Australia, Comet Vale Township, Lake Goongarrie


Weathered rhomb of Dolomite 8cm wide	©

Dolomite
Austria
Salzburg, Lungau, Murwinkel, Rotgülden, Lower Rotgülden lake, Water tunnel


Hemisphere of Dolomite 2.4cm wide	© mineralienkluft

Dolomite
Austria
Styria, Bruck an der Mur, Laming valley, Oberdorf an der Laming, Magnesite deposit


Dolomite with Quartz 8cm wide	©


Dolomite with Strontianite 12cm	© Josef Huber

Dolomite
Austria
Styria, Niedere Tauern Mts, Hohentauern, Sunk


Dolomite 5.5cm wide	©

Dolomite
Austria
Styria, Niedere Tauern Mts, Hohentauern, Sunk, Magnesite deposit


Dolomite 10.5cm wide	©

Dolomite
Brazil
Bahia, Brumado


Dolomite 11cm wide	© Joseph A. Freilich


Dolomite & minor Magnesite16cm wide	©


Dolomite 3.8cm wide	© Rob Lavinsky


Dolomite & Magnesite 4cm	© Rob Lavinsky


Dolomite 6.2cm wide	© Rob Lavinsky


Twinned dolomite 2.9cm wide	© Rob Lavinsky


Dolomite on Quartz ~6.5cm tall	© Freilich


Dolomite 7.2cm wide	© Rob Lavinsky

Dolomite
Canada
British Columbia, Golden Mining Division, Radium Hot Springs, Mount Brussilof mine


Dolomite 3.3cm wide	© Rob Lavinsky


Dolomite 6cm	© D.K.Joyce

Dolomite
Czech Republic
Bohemia, Karlovy Vary Region, Horní Slavkov


Dolomite & minor Quartz etc.11cm wide	©

Dolomite
Democratic Republic of Congo
Katanga


Dolomite var cobaltoan 2.4cm	© Lavinsky


Dolomite var. cobaltan FOV2cm	© Tony Peterson

Dolomite
Democratic Republic of Congo
Katanga, Katanga Copper Crescent, Western area, Kolwezi, Mashamba West Mine


Dolomite var. cobaltoan 1.9cm tall	© Rob Lavinsky

Dolomite
France
Languedoc-Roussillon, Gard, Anduze, Saint-Félix-de-Pallières, Pallières Mines


Dolomite 8cm wide	© Arliguie M

Dolomite
Greece
Attikí Prefecture, Lavrion District, Lavrion District Mines, Lavrion, Km-3 Mine


3mm Dolomite xl. cluster on Hematite	© Steve Rust

Dolomite
Greece
Macedonia Department, Chalkidiki Prefecture, Cassandra Mines, Stratoni operations, Madem-Lakko Mine


Dolomite & Calcite ~5cm	© Spirom. & Greekrocks


Dolomite 7cm	© Ch. Spirom. & Greekrocks.com


4.5cm	© Christian Bracke

Dolomite
Hungary
Borsod-Abaúj-Zemplén Co., Rudabányai Mts., Alsótelekes, Gypsum-anhydrite quarry


Dolomite FOV 4mm wide	© Tamás Ungvári 2006

Dolomite
Iran
Hormozgan Province, Hormuz Island


Dolomite 1.9cm wide & 2mm thick	© Janez Zavašnik

Dolomite
Ireland
Sligo, Aughamore Quarry


Dolomite 5cm tall	© Van King

Dolomite
Italy
Piedmont, Torino Province, Canavese District, Chiusella Valley, Traversella, Traversella Mine


Dolomite ~3cm wide	© GMV - Traversella


4cm Dolomite crystals	© GMV - Traversella

Dolomite
Italy
Sardinia, Carbonia-Iglesias Province, Domusnovas, Oridda Valley, Barrasciutta Mine


Dolomite 13.5cm wide	© Mauro Astolfi

Dolomite
Kosovo
Kosovska Mitrovica, Trepča valley, Trepča complex, Stari Trg Mine


Dolomite & small Calcite 6cm wide	© G. van der Veldt

Dolomite
Mexico
Chihuahua, Mun. de Aquiles Serdán, Santa Eulalia District, East Camp, San Antonio Mine


Dolomite 3.2cm tall cm	© Weinrich

Dolomite
Mexico
Chihuahua, Mun. de Saucillo, Naica


Dolomite ~15cm wide	©

Dolomite
Mexico
Guanajuato, Mun. de Guanajuato, Guanajuato, San Juan de Rayas Mine


Dolomite ~9.5cm wide	©

Dolomite
Morocco
Oriental Region, Oujda-Angad Province, Touissit District, Touissit


Dolomite on Sphalerite 5.1cm wide	© Roarke


Dolomite 12cm wide	© Jorge M. Alves

Dolomite
Morocco
Souss-Massa-Draâ Region, Ouarzazate Province, Tazenakht, Bou Azzer District, Aghbar, Aghbar Mine


Dolomite var cobaltoan 4.8cm wide	© JSS


Dolomite var. cobaltoan 5cm wide	© Martins da Pedra

Dolomite
Morocco
Souss-Massa-Draâ Region, Ouarzazate Province, Tazenakht, Bou Azzer District, Bou Azzer


Dolomite var cobaltoan 4cm wide	© Rob Lavinsky


Dolomite var cobaltoan 4.2cm wide	© Rob Lavinsky

Dolomite
Morocco
Souss-Massa-Draâ Region, Ouarzazate Province, Tazenakht, Bou Azzer District, Bou Azzer, Bou Azzer East deposit


Dolomite var cobaltoan FOV 3cm	© Horváth


Dolomite var cobaltoan FOV 7mm wide	© Gianfranco Soraci

Dolomite
Namibia
Otjikoto Region, Tsumeb, Tsumeb Mine


Dolomite var cobaltoan 8.8cm wide	© Rob Lavinsky


Dolomite var cobaltoan 5.4cm wide	© Steve Hardinger


Dolomite & minor Dioptase 8cm	© Peter Haas


Dolomite & Calcite 7cm wide	© 2002 John H. Betts

Dolomite
Portugal
Beja District, Castro Verde, Neves-Corvo Mine


Dolomite 6cm wide	© Rui Nunes 2009


1cm Dolomite xls with Chalcopyrite	©

Dolomite
Portugal
Castelo Branco District, Covilhã, Panasqueira, Panasqueira Mines


Dolomite on Arsenopyrite 15cm tall	© vasco trancoso

Dolomite
Romania
Maramures Co., Baia Mare, Chiuzbaia, Herja Mine


Dolomite 8cm wide	© G. van der Veldt


Dolomite on Quartz 6cm wide	© Weinrich Minerals

Dolomite
Romania
Maramures Co., Baiut


Dolomite 4cm wide	© willy


Dolomite 6cm wide	© willy


Dolomite 13cm wide	© www.leontinminerals.com

Dolomite
Romania
Romania, Maramures Co., Cavnic


Dolomite & Chalcopyrite 14cm cm wide	© G. van der Veldt

Dolomite
Spain
Aragón, Teruel, Ojos Negros, Ojos Negros iron mines


Dolomite 7cm	© Rafa Muñoz Alvarado


Dolomite 12cm	© Rafa Muñoz Alvarado

Dolomite
Spain
Aragón, Teruel, Teruel, Salobral ravine


Dolomite FOV 1.7cm	© Michael C. Roarke


Dolomite xls ~1cm	© Rob Lavinsky

Dolomite
Spain
Castile-La Mancha, Guadalajara, Setiles, Castilla quarry


Dolomite 3cm wide	© E-Minerales


2cm Dolomite xl	© E-Minerales

Dolomite
Spain
Navarre, Esteribar, Eugui, Azcárate Quarry


Dolomite 7cm tall	© fabreminerals.com


Dolomite, main xl 1.7cm wide	© fabreminerals.com


Dolomite 5.5cm wide	© fabreminerals.com


Dolomite ~15cm wide	©


Dolomite 5.2cm tall	© Collectors Edge


Dolomite 5cm wide	© fabreminerals.com


Dolomite 6.7cm wide	© Joseph A. Freilich LLC


Dolomite ~10cm wide	©


Dolomite ~15cm tall	©

Dolomite
Spain
Valencian Community, Valencia, Chelva, Domeño, CV-35 Highway cut


2.5cm Dolomite xl	© Francisco Mayor


1.5cm Dolomite xl	© Martins da Pedra


2cm Dolomite xl	© J.C.Tarín

Dolomite
Switzerland
Grischun, Engadin, Scuol, Tarasp

Banded sinter dolomite.


Dolomite, cut & polished 5cm tall	© Rob Lavinsky

Dolomite
Switzerland
Wallis, Binn Valley, Freichi area, Wyssi Flue


Dolomite 5.2cm wide	© Christian Bracke

Dolomite
Switzerland
Wallis, Binn Valley, Im Feld, Lengenbach Quarry


Twined 2.5mm Dolomite xl	© D. Preite

Dolomite
Switzerland
Wallis, Brig, Simplon pass area, Simplon Railway tunnel


Dolomite ~5.5cm tall	©


Dolomite FOV 5.5cm wide	© Christian Bracke

Dolomite
USA
Arizona, Pinal Co., Tohono O'odham Indian Reservation, Vekol Mts, Vekol District, Kohatk, Reward Mine


Dolomite 6.5cm wide	© fabreminerals.com

Dolomite
USA
Arkansas, Lawrence Co., Lawrence County Zinc District, Black Rock


Dolomite 8.2cm wide	© Rob Lavinsky

Dolomite
USA
Kansas, Cherokee Co., Tri-State District, Picher Field, Baxter Springs


Dolomite & Chalcopyrite ~7.5cm	© Charles Creekmur


Back side of left	© Charles Creekmur

Dolomite
USA
Kentucky, Lincoln Co., Halls Gap, US 27 roadcut


Dolomite 1.5cm wide	© 2006 Peter Cristofono

Dolomite
USA
North Carolina, Alexander Co., Stony Point
Dolomite to 10cm. Associated with muscovite and rutile from pegmatites. We need a photo of this.

Dolomite
USA
Pennsylvania, Lancaster Co., Manheim Township, East Petersburg, Binkley-Ober Quarry


Dolomite 11.3cm wide	© Rob Lavinsky

March 8, 2011.]]> David Von Bargen Best Minerals D Mon, 07 Mar 2011 16:13:50 +0000 http://www.mindat.org/forum.php?read,70,141809,213457#msg-213457 Re: Dreyerite http://www.mindat.org/forum.php?read,70,141809,213457#msg-213457
To learn more about the Schneeberg occurrence, you should send a PM to Steffen Michalski. If anyone can help you, it is probably him.]]> Peter Haas Best Minerals D Sat, 12 Feb 2011 19:04:59 +0000 http://www.mindat.org/forum.php?read,70,141809,213144#msg-213144 Re: Dreyerite http://www.mindat.org/forum.php?read,70,141809,213144#msg-213144 you convinced me ;) .. i fear that i will have to reverse the strings also with my other best of articles :(
Unfortunately i forgot to tick the follow topic box so i did not see your response earlier .. just as martin posted i noticed the reply.
so done...

Hey Martin,
nice you stopped by. I have all this info from my colleague Dr. Haneke who knew your uncle and did geological mapping with him. I found the story of the Dreyerite discovery very interesting, we keep all the original documentary material that Jost Haneke kept at the Pfälzisches Bergbaumuseum. If you want to know more please leave me a PM. We presented all this info in a poster display at the museum some years ago. Glad you like it!

Cheers
Roger]]> Roger Lang Best Minerals D Mon, 07 Feb 2011 21:23:06 +0000