 | | Journal (issue) | | • Email: info@kristalle.com Harz Mountains, Germany by Günter Grundmann Thomas P. Moore Wendell E... Moore COVER: PROUSTITE, 3.5 cm, from St Andreasberg. Germany, found in 1899; ex collection of Richard... Contents The St. Andreasberg Mining District, Western Harz Mountains, Niedersachsen, Germany .............(Simonin, 1869). The Mining District Western Harz Mountains Niedersachsen, Germany Günter Grundmann Eschenweg...minrecord@comcast.net The geographically tiny St. Andreasberg District of silver mines has an outsized reputation: |  | | Book | | Vienna. Lower left: Cobaltocalcite group. from Lerida. Spain. Folch collection. Barcelona. Lower right:...Netherlands. Back cover The museum ldar-Oberstein. West-Germany. is quaintly situated beneath the Felsenkirche...Copyright 1986 by . Ulrich Burchard, Lalling, West-Germany All rights reserved including the right of reproduction...Printed in Germany Miscellaneous: Design & Lay Out by Rainer Bode, Haltern, West-Germany Type set by...Wurzburg, West-Germany Colour separations by Litho Thungen GmbH, Thungen, West-Germany H. Bari, Musee |  | | Journal (issue) | | Articles Minerals of the Espirito Santo Pegmatite District, Eastern Brazil.. ......697 by M. L. Chaves, A... THE T U CSON FINE M INER AL G A L L ER Y 465 W ST MARYS RD, TUCSON, AZ 85701 THE TUCSON GEM & FINE...VENTURES Minerals of the Espirito Santo Pegmatite District Eastern Brazil Mario Luiz de Sá C. Chaves1 Andrea...decorate their faces, attaching them under the lower lip and on the cheeks. Inspired by the existence...merchants. But by 1900, settlement along the middle and lower Rio Doce Valley was still almost non-existent. The |  | | Journal (issue) | | Austria. (3) Boracite, 2.9 cm, from Lüneburg, Germany. (4) Native silver, 3.5 cm, from Potosí, Bolivia...Chalcocite, 2.5 cm, from Cornwall, England. (7) Zircon, 2.6 cm, from Miask, Ural Mountains, Russia. (8)...(8) Pyrargyrite, 1.8 cm, from St. Andreasberg, Harz Mountains, Germany. (9) Pyrite, 2.4 cm, from Gerensegen...Gerensegen, Schwarzwald, Germany. (10) Hematite “iron rose,” 3 cm, from St. Gotthard, Switzerland. (11) Tourmaline...2 cm, from the Benitoite Gem mine, California. Lower left: Rhodochrosite, 2.5 cm, from the N‘Chwaning |  | | Journal (article/letter/editorial) | | anstehendem und verwittertem Brockengranit nSrdlich St. Andreasberg. Von HORST PILL~ER. Mit 2 Textabbildungen....B r o c k e n g r a n i t m a s s i v s nSrdlich St. A n d r e a s b e r g e n t n o m m e n : 1. Aufschln$...weleher yon der Stral~e St. Andreasberg-Clausthal etwa 4 km nSrdlich St. Andreasberg nach Westen abzweigt...AufsehluB ,,Sonnenberg" am Westrand der StraBe St. Andreasberg-Claustal, 1 km sfidlich des Sonnenberger Weghauses...Anfschlul3 ,,gordanshShe" an der I-Iauptstr~e St. Andreasberg-Clausthal, etwa 300 m nSrdlich des Aussichtspunktes |  | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where...incident beam are retarded by passing through to the lower side of the film, rejoining the main beam either...forms part of an important and extensive mining district. Details of the names of species are taken largely...Found at the Pelican Dives mine, Silver Plume district, and Little Emma mine, Clear Creek County, Colorado |  | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As many...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a po}Vder-like...is also easily seen in zircon and sphene, where double refraction at the lower edge of the crystal can...by: phosphorite. Found in: Saarland; Ruhr valley; Saxony; Vesuvius, Etna/Italy; Hekla/Iceland; Hawai, California/USA; | | | Book | | specific gravtly are again defined as groups for the lower sectton of the mulucolored margin bar. As many minerals...minerals as possible are mcluded m each group The lower section of the margm bar is fitted w1th a scale...crystals. and weathered surfaces can g1\'e a false lower hardness After the te\l scratch, a powder-hke residue...is also easily seen in zircon and sphene, where double refraction at the lower edge of the crystal can...by: phosphorite. Found in: Saarland; Ruhr valley; Saxony; Vesuvius, Etna/lraly; Hekla/Iceland; Hawai, California/USA; |  | | Journal (article/letter/editorial) | | Sammlungen Brennhausgasse 14 09599 Freiberg, Germany andreas.massanek@geosamm.tu-freiberg.de Downloaded...Schloss Freudenstein Schlossplatz 4 09599 Freiberg, Germany christina.seifert@geosamm.tu-freiberg.de Figure...KRÜGERHAUS A New Permanent Exhibition in Freiberg, Saxony, Germany 212 ROCKS & MINERALS N ative silver, in...mineral localities in just Germany. Figure 3 (above). Krügerhaus in Freiberg, Germany. Detlev Müller photo...near Freiberg, Saxony, Germany. Jeff Scovil photo. A Mineralogical Journey through Germany The central | | | Book | | one that will again defined as groups for the lower sec- 2< make a positive identffica- tion of the...characteristic—also weight of a specific mate- The lower section of the margin bar is rial compared with...crystals, and weathered surfaces can give a false lower hardness. Metal holders in which mineral chips...seen in Mother-of-pearl and greasy lustres are zircon and sphene, where double refrac- mostly found...Tarnish, discolorations, and weathering tion at the lower edge of the crystal can be observed with the naked | | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As man y...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a powder-like...is also easily seen in zircon and sphene, where double refraction at the lower edge of the crystal can...by: phosphorite. Found in: Saarland; Ruhr valley; Saxony; Vesuvius, Etna/Italy; Hekla/lceland; Hawai, California/USA; |  | | Journal (issue) | | or individual specimens. CRYSTAL CLASSICS 465 W St Marys Rd, Tucson, Arizona 85701 crystalclassics.co...Balmat, St Lawrence County, New York, USA Photo Credit: T Spann DYLAN STOLOWITZ 4 2 7 Main St reet |...County, California Mark Ivan Jacobson 1714 S. Clarkson St. Denver, CO 80210 markivanjacobson@gmail.com The...the specimen. The future dragon’s head is to the lower right with future feet on the left. Note the temporary...glue coating the outermost matrix rock face on the lower left to reduce vibration damage during transport |  | | Journal (article/letter/editorial) | | the United States), followed by the Garawilla district of northern New South Wales (superb orange and...Ardglen in the upper Hunter Valley); the New England district of New South Wales (cassiterite, wolframite, scheelite...topaz, stibnite, and fluorite); the Cobar Copper district of central New South Wales (azurite, malachite...cerussite, dundasite, and phosgenite from the Dundas district; and cassiterite from Rossarden); Queensland (cerussite...Kambalda district; and wulfenite and chrysocolla from Whim Creek) and the Northern Territory (zircon from |  | | Journal (article/letter/editorial) | | from the early kingdoms that settled around the lower and middle Mekong River (fi fth to ninth centuries)...sandstone is consistent with the upper portion of the Lower–Middle Jurassic Terrain Rouge Formation of Cambodia... north of Angkor, and form the main quarrying district that served the capital of the Khmer empire for...example is the Freiberg district, in the Erzegebirge metallogenetic province of Germany, where indium enrichment...York. PHOTO BY ELENA BASSO. (B) Skutterudite from Saxony: sample 68299, provided by the American Museum |  | | Journal (issue) | | Institute of Romania Essaid Bilal, Ecole des Mines, St. Etienne, France M. S. Pandian, Pondicherry University...Metaliferi Mts. 15 4. Baia Mare metallogenic district 64 5. Other sources of native gold from Romania...and engineering staff, many of them educated in Germany. The collection has been added with new gold specimens...exhibited at the Mining Museum in Heidelberg – Germany. Numerous samples illustrate a variety of assemblages...unit. For instance, in BradSăcărâmb metallogenic district, the Au:Ag ratio is relatively uniform (45% to |  | | Journal (article/letter/editorial) | | crystalline rocks of the Upper Harz Mountains, Germany By ALBRECHT BAUMANN, BORW1N GRAUERT, Miinster,...metasedimentary rocks of about 1 . 6 G a or older. The lower intercept indicates a possible metamorphic event...cristallines de l'Oberharz par les m6thodes de I'U-Pb sur zircon et sphhne et du Rb-Sr sur roches totales et sur...The basement of the Harz consists of Devonian and Lower Carboniferous clastic strata folded during the Asturian...crystalline rocks of the Upper Harz Mountains, Germany UPPE'9 HNV ~ 671 Harz 0 lOkm Fig. 1. Crystalline |  | | Book | | Orthorhombic] |The Tetragonal Tricl cassiterite zircon | scheelite vesuvianite wulfenite System The...results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual |  | | Book | | spodumene or rubellite, and concentrations of zircon, xenotime, monazite, cassiterite, columbite, tantalite...Such metals as Cu, Ag and Zn often pass from a lower oxidation zone to a deeper cementation zone where...is harder and the test may proceed to the next lower grade. Not much force on the scratching point is...aggregates or weathered minerals have usually a lower hardness than the single or unaltered crystals of...For instance, hematite (hardness 6) will have a lower hardness in the radiating or earthy form than in |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...culture, derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric...of these fourfold axes in all. The considerably lower symmetry of a monoclinic crystal is shown in Fig...crystallographic symmetry of a body may often be lower than its apparent geometric symmetry. In a pyrite...symmetr:y ar:e no longer: present (Fig. 16a, p. 93). A lower: cr:ystallogr:aphic symmetr:y is often only shown | | | Book | | soodumene or rubellite, and concentrations of zircon, xenotime, monazite, cassiterite, columbite, tantalite...Such metals as Cu, Ag and Zn often pass from a lower oxidation zone to a deeper cementation zone where...is harder and the test may proceed to the next lower grade. Not much force on the scratching point is...aggregates or weathered minerals have usually a lower hardness than the single or unaltered crystals of...For instance, hematite (hardness 6) will have a lower hardness in the radiating or earthy form than in |  | | Journal (issue) | | net MARCH–APRIL 2019 Articles The Candelaria District Mineral County, Nevada .........................adams@aero.org Bonanza silver ore made the Candelaria District one of Nevada’s largest silver producers in the...whiteite-(CaMgMg). INTRODUCTION The Candelaria district is located in southeastern Mineral County, along...account of the earlier history of the Candelaria district was compiled from Chalfant (1942), Shamberger...group of Mexicans in 1863. The Columbus mining district, then in Esmeralda County, was established around |  | | Catalog/List | | BARSTClll 26, Tregeseal, St •. Just, Near pen~ance, Cornwall, England. TEL.NO.: st. Just 788880 STD 0736)...embedded in Chlorite Schist. ~x3xlt". £11. mJ. ANATASE. St. Gotthard, Ticino, Switzerland. Sharp, lustrous,...2tx2fxlt-". £5.50. 19. CASSITERITE. Wheal Rock, St. Agnes, Cornwall. Lustrous, brownish black small...£1.75. 20. 21. 22. CERULEITE. Wheal Gorland, St. Day, Cornwall. Specimen A - very rich pale sky blue...I-txlfxl". £t,.50. CERUSSITE. Pentireglaze Mine, St. Minver, Cornwall. Lustrous creamy white elongated' |  | | Journal (issue) | | GorbunoYskoe quartz occurrence, Gornouralsk Urban District, Central Urals, Russia. Specimen: Igor V. Peko...Moscow 66 Mineral Shows, Summer 2022 Joerg Liebe St. Marie aux Mines 2022 "Special Exhibition" Report...Specimens: Gorbunovskoe occurrence, Gomouralsk Urban District, Central Urals, Russia. 2. Quany of the Gorbunovskoe...Gorbunovskoe and other occurrences in the Nizhny Tagil district; however, no details of such quartz and its occurrences...was found in two locations in the Nizhny Tagil district. Tremolite asbestos with quartz was observed in |  | | Journal (article/letter/editorial) | | regia, the insoluble matter consists of qnartz, zircon, arid about 7 per cent. of iridosmine in bright...f. Mk., 1887, 1, Mem., 89-94) .-1. Prehnite from St&gau.-Prehnite has recently been foiind in tke granite...and the augite fiDom the granular diabase of St. Andreasberg in the Ham also contained 0.001 per cent. of...of ferric oxide and sulphuric acid, accompanied by st slow disappearance of calcium carbonate. The ferrous...Savu Savu, in tlie Fiji Islands ; Berg Giefshubel, Saxony ; and Pitlseathly, Scotland. C. H. B. |  | | Book | | attitude to life. Marcasite. 100 mm. Misburg. Germany 7 i 1. Elements Copper. 42 mm. Cornwall, UK...: Vie in) were found Silver. 52 mm. Freiberg. Germany Copper. 120 mm. Keweenaw Peninsula. U.S.A. in...have been found. Silver, 55 mm. Schwarzwald. Germany Beautiful specimens of wire silver with wires...are known from Freiberg, Schneeberg and St. Andreasberg, Germany. Wires several cm long were also found...industry, measuring instruments, metallurgy. Germany. They are also known fioin Sala, Sweden; Les Chalanches |
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