 | | Book | | rocks contain large crystals, often of the feldspar group and are known as porphyries. The individual crystals...them. Among the plutonic rocks is the familiar granite with its coarse grain structure. It contains mostly...similar to granite but with no quartz. Sandstone (South Dakota, USA) _9_ A darker rock than granite but with...is formed by the mechanical disintegration of a granite. Shale is mostly made up of clay particles with...are the home of a number of interesting minerals. Garnet, staurolite and andalusite are typical minerals |  | | Book | | feldspar. The whole specimen is called granite. Limestone and granite you will already have heard about....grains are nothing else but garnets, the same 'garnet' which, when cut and mounted, can be seen in any...from impurities) only of the mineral calcite. Granite is the bestknown example of a rock consisting of...mica schist of quartz and mica, and eclogite of garnet and augite. There are also rocks which consist...the saltmining district of Hallstatt in Upper Austria, where many prehistoric finds have been made. In |  | | Catalog/List | | . 348 RHODIZITE (K Cs)Al (B,Be) 0 pale yellow, garnet shaped single crystal. 3 mm £3.50 (Antsirabe Madagascar)...Scandium minerals.(Klausen Qry.Gleichenberg Styria Austria) 1mm sphere on 1cm £3. b) with 3 or 4 spheres £15...BELOVITE Ce (Sr Ce Na Ca)P0/4 One of the Apatite group. , yellowish areas in USSINGITE (Alluaiv Lovozero...with Azurite. Rare. (Grabanz,Neufinkenstein,Carinthia Austria) 2x2cm £4 452 TENORITE Copper Oxide. Rich...CO/3 OH blue micro crystals on rock. (Greystones Quarry,Lezant,Cornwall) £2.00 lx H £3.50 2 076 CALEDONITE |  | | Book | | stoop and pick up a piece of limestone, gneiss or granite? And yet, it is these rocks which shape mountains...fect (mica), distinct (calcite) and imperfect (garnet) cleavage. Other minerals cannot be split at all...epidote, enstatite, feldspar, glaucophane, mica, garnet, hauyne, hedenbergite, hornblende, hypersthene...tabular albite crystals and smoky quartz, grown on granite {see p. 88, pegmatite). Specimen from Epprechtstein...muscovite (No. 13). Rare. Specimen from the Tyrol (Austria). 10 Biotite is the most common mica, named after |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...) 6-21 %. VHN(synth.) (10.C. purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite |  | | Book | | the collector to search basalts for beryl, or granite for halite. Three rock classes are universally...feldspars but not actually members of the feldspar group), pyroxenes, amphiboles, micas and olivine. Other...feldspars feldspathoids members of the feldspar group leucite, sodalite, nepheline, cancrinite Mafic...members of the pyroxene group members of the amphibole group members of the mica group micas The mineralogist...change from low mafic to complete mafic content. Granite and syenite are light in colour, diorite and gabbro |  | | Report (issue) | | Garnet Great Balls of Fire ISBN 978-0-9790998-4-7 Publisher Lithographie, LLC East Hampton, Connecticut...meter relay at the 1960 Summer Olympics in Rome. Garnet Great Balls of Fire Contributors Lothar Ackermann...2008, I attended the John Sinkankas Symposium on garnet at the Gemological Institute of America (GIA) in...confirmed that he had experimented with irradiating garnet and found that even megadoses of radiation had...International, spoiled the party, informing the group that the color of some 50 percent of the green gem |  | | Catalog/List | | matr·x. X 20 needed. (Pochkarsee Gasteiner,Tal,Austria) half ins 0.50 -120 ,A rJE O IU very micro g ey... 3 8 ,HODTZ TE !Y. ,c)Al {B1 Be) 0 pale yello, garnet shaped si.flE crystal. 3.. E3.50 (Antsirabe Hadagac...somewith Azurite. Rare. (Grabanz,Neufinkenstein,Carinthia Austria) 2x2cmE4 452 TENORITE CopperOxide. Rich black...thin light blue crusts on matrix. (St Stephan Austria) lem El.50 lxlins ES 335 PSEUDOMALACHITE Cu P0/4...Quartz with micro spots of ative Copper. (Hingsten Quarry,Cornwall) lxl i'.2 553 ETRAHEDERITE (Cu Fe) Sb |  | | Book | | Miguel Hortiguela, LPPO Illustrations: Crowle Art Group Printed in China The publisher gratefully acknowledges...ofjust a few minerals; quartz and the feldspar group are the most abundant processes — called biominerals...materials created by. living organisms rocks such as granite. The mineral grains in these rocks are actually...this sediment sometimes form fossils. Orbicular granite, Finland * 99 x 74 x 31 cm. This uncommon type...surface, creating an intrusive igneous rock such as granite. These rocks become exposed to wind, water and | | | Book | | Toronto, Ontario, Canada. Illustrations: Crowle Art Group Note: For illustrative purposes, some images in...of just a few minerals; quartz and the feldspar group are the most abundant species. These are the major...major constituent minerals in common rocks such as granite. The mineral grains in these rocks are actually...this sediment sometimes form fossils. Orbicular granite, Finland + 99 x 74 x 31 cm. This uncommon type...surface, creating an intrusive igneous rock such as granite. These rocks become exposed to wind, water and |  | | Journal (article/letter/editorial) | | County, New York State T he minerals of the garnet group represent some of the most collectible of all...deposits. In fact, in some types of economic deposits, garnet constitutes an important gangue mineral, and such...America’s largest hard-rock garnet mines within its borders, a famous New York garnet specimen has been chosen...this issue’s Connoisseur’s Choice piece. Moreover, garnet was designated as New York’s official state gemstone...Almandine is one of fifteen minerals in the garnet group, each member of which is defined by its pure |  | | Catalog/List | | £3 348 RHODIZITE (K Cs)Al (B,Be) 0 pale yellow, garnet shaped single crystal. 3 mm £3.50 (Antsirabe Madagascar)...with Azurite. Rare. (Grabanz,Neufinkenstein,Carinthia Austria) 2x2cm £4 452 TENORITE Copper .Oxide. Rich...OH good blue micro crystals on rock (Greystones Quarry,Lezant,Cornwall) 14 X 14 £2.00 lx 14 £3.50 2 ...thin light blue crusts on matrix. (St Stephan Austria) lxlins £5 1cm £3.50 416 TYROLITE Ca Cu Arsenate/Carbonate...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 £2 553 TETRAHEDERITE (Cu Fe) Sb S |  | | | | are classified according to the chief ion (or ion group) which serves as a mineral’s fundamental unit. The...Fine crystals are found in schists at Mitterberg, Austria, and in the Trentino district, Italy. 40 Arsenopyrite...Nordmark, Sweden; also at Zillertal and Pfischtal, Austria. occurrences: 62 5 X Magnetite (Black octahedrons...Maderanertal, Switzerland and also at Pragatten, Austria. Fairly nice specimens at Tremadoc, Wales. occurrences:...usually a high-temperature hydrothermal mineral in granite areas, and in peg¬ matites. Also fairly abundant |  | | Book (edition) | | chief ion minerals (or ion are classified group) which according serves to the as a mineral’s...Fine crystals are found in schists at Mitterberg, Austria, and in the Trentino district, Italy. 3x :...are found in Pennsylvania. Ontario, Nordmark, Austria. 62 Very beautiful crystals occur at French ...Maderanertal, Switzerland and also at Pragatten, Austria. Fairly nice specimens at Tremadoc, Wales. 70...usually a high-temperature hydrothermal mineral in granite areas, and in pegmatites. Also fairly abundant |  | | Catalog/List | | formed dodecahedral Madagascar ALMANDINE lins £4 garnet group Crystal 1 inch across Grey veins in and on matrix...- - - AMAZONITE Pure green cleavage Landsverlc quarry, Evje, Norway lxl S0p ALAMOSITE fcLp 10 g:...£10 lx2£10 lx2 £1 r- - • AMAZONITE Felspar Group 16 Ix½ £5 2x2 £1.20 MICROCLINE .Green crystal...ANKERITE-KUfNAHORJTE Rich fawn massive, xrayed material. Dolomite group lxl £3 Laurium Greece Good green micros in lxlins...--.-:-:----:--------------ANORTHOCLASE Felspar group pure pale brown cleavages. Ula, near Larvik, South |  | | Catalog/List | | ANDRADITE garnet group ♦ ANGLES ITE Pb SO/4 ANHYDIUTE Ca SO/4 AN KERITE-KUTNAIIORITE Dolom ite group ANN ITE...Mica AN ORTHITE Fe ldspar ANORTHOCLASE Felspar Group ANTHOPH YLLITE Amphibole 2cm £8 3cm £ 15 Near...Mapimi. Mexico A LLOPHANE ALSi O A LMANDINE garnet group ♦ A LSTONITE Ba C a CO/3 A LUJ\UNITE Al SO/4...sug.iry textured mass. good small grey crystal group ~- 2x2 £15 s I z E s i\l ,\ lx l £4 Ix I...paper available. Rich grey crystalline mass. Saga Quarry, Tvedalen near Larv ik, Norway Ix I £1.50 Ix I |  | | Catalog/List | | _ . Pure black mica plate new Analysis , Saga Quarry. Tvedalcn near Ix I £3 I x2 £6 2x2 £ 12 7 AN!lilTE...18 ANORTHITE ..J:.e.l_dspar 2x2£2 2x3 £4 Felspar group pun: pale brown cleavages. Ula, near Larvik, South...Brazil Rich b·iue ~~ massive 54 APATITE Felspar group 2>c3 £7.S0 Ix2 £2.SO 2x2 Holmbush Mine. Kelly Bray...cleavage 42 BARYTES • ·-- -·Small while crystal group offseptarian Sheppcy, Kent J x I cm _BaSO/4 __ ____...- Creamy white micro crystals in cavirties Saga Quarry, Tvedalen, Norway Ix½ £3 59 BOEHl\lITE AIO OH inNatrolite |  | | Catalog/List | | (84) New Minerals ANATASE TiO/2 44 ANDRADITE garnet group 732 APATITE Single brown crystal aboutlcm x4mm... Triangular individual brassy crystal or small group. 7mm is a single crystal Perfect, sharp Tetrahedron...5mm£3 Hannover Cove.St Agncs, Comwall Wagholi Quarry,Poona,India lxl £3 Funauchi Mine, Aikta Prefecture...rich pink cleavage 345 REEDMERGNERITE Feldspar Group micro orange spheres on ½ inch matrix. 72 2 RHABDOPHANE... Brosso Minc,lvrca.ltaly lxl £5 Boghill Road Quarry, Glengonnley, County Antrim, Yaknl Mine,Bigndic |  | | Book | | 22:65-69 [Abstracts of the] FM-TGMS-MSA Symposium on Garnet (chairman: K. J. Wenrich) 24:61-68 Abstracts of...10:215-217 ADULARIA Adu Iaria from the Howard-Montgomery quarry, Howard County, Maryland (by J. S. White) 25:53-54...the Alpine ar,d Subalpine region [Switzerland,Austria and Iti:Jy](by C. M. Gramaccioli) 8:287-293 Minerals...10:85-89 Micromounting in the eastern Alps of Austria (by K. Kotal) 13:171-173 ALSTONITE An occurrence...ANALCIME Natrolite and analcime from Eckman Creek quarry. Waldport. Oregon (by M. Groben) 1:153, 1:173, |  | | Book | | composed of several different minerals such a granite, the mineral grains abut against one another and...it possible to ascribe any crystalline form to a group of faces with very similar characteristics. H U...cavity. Below: Specimen of granite from Baveno, Piedmont, Italy. Above: A group of pyrite crystals showing...luster. topaz and minerals from the tour¬ maline group. Resinous This term is applied to a luster like...luster of heulandite, a mineral of the zeolite group, can be defined as pearly. Below, left to right: |  | | Book | | describing some of its chemical properties. Within each group the minerals are listed accord¬ ing to CIM; and...gold and silver. It occurs naturally in veins in granite and gneiss, often accompanying ores of cobalt and...rare Right: Sulphur crystals from Sicily showing a group of bipyramids 14 Horsfordite Horsfordite, an antimonide...pegmatites and in quartz veins in association with granite. Localities. Good quality specimens are found at...name is taken is Lolling, near Huttenberg, Carinthia, Austria; other localitiesarethe Harz Mountains, Saxony |  | | Book (edition) | | supergroup (Biagioni et al., EJM 25, 85-90, 2013), garnet supergroup (Grew et al., AM 98, 785-811, 2013)...Al;[(OH) 4 IPO;(OH)l(PO4))'4Hi0 (8.D, turquoise group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46'...Northampton co., Pennsylvania, and from the Kobokobo quarry, near Kamituga, Dern. Rep. of Congo. EJM 23, 269-277...luster vitreous, streak white. Cleav- (8.D, mixite group). Hexagonal, P6/111, a,c = 13.55, age {001} perfect...Czech Rep. Ahrensite Fe2SiO4 (9.A, ringwoodite group). Cubic, FdJm, a= 8.16. d: 2.46(10) - 1.245(8) - |  | | Book | | photographs were provided by the following: 2 (Granite rock exposed at Tarn (Midi-Pyrenees), France),...on to tell you that the mottled brown stone is granite - then show how through the Above: Some specimens...top is the rock orbicular, a special variety of granite. Below are stones of the mineral onyx. magnifying...where it often collects - but only in areas near granite. Some cassiterite was mined from veins deep underground...refracted (bent) as they pass through spinel and garnet. Deeper down still, of perovskite dubbed post- |  | | Book (edition) | | 1. 2. 3. 4. II. Sulphur Group Boron Group Arsenic Group Carbon Group 104 106 109 110 115 MINERALS...Amphibole Group 274 275 277 278 Beryl, etc 2. Unisilicates Chrysolite Group Garnet Group Zircon Group...Axinite 282 Danburite, lolite 286 Mica Group Scapolite Group 287 292 293 286 Nephelite, Sodalite,... Leucite 296 302 303 304 306 Feldspar Group 8. Subsilicates Chondrodite Tourmaline Andalusite, Fibrolite...Chlorite 337 IV. 1. 2. 3. 332 Hydromica Group Group HYDROCARBON COMPOUNDS. Simple Hydrocarbons |  | | Catalog/List | | £20 348 RHODIZITE (X Cs)Al (B,Be) 0 pale yellow, garnet shaped single crystal. 3 mm £3.50 (Antsirabe Madagascar)...Scandium minerals.(Klausen Qry.Gleichenberg Styria Austria) 1mm sphere on 1cm £3.50p 239 DYSCRASITE Ag/3 Sb...Quartz with micro spots of Native Copper. (Kingston Quarry,Cornwall) 1x1 £2 - 553 TETRAHEDERITE (Cu ?e) ;'L...cleavages with cerussite and or Pyrolusite (Merehead Quarry, Mendips,Somerset) 54 x 54 £2 269 MENDIPITE Pb/3...metallic fibrous on 2cm white dolomite. (Lengenbach Quarry,Binn Valley Switzerland) £4.50 Lead Sulphide 250 |
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