 | | Journal (issue) | | in which organic material has been replaced by quartz or some other mineral because the original substance...plane-sided, hollow objects formed by the infiltration of quartz into openings left between crystals due to their...analogous bodies formed by the infiltration of quartz into a regular cavity left by the dissolution of...1885, School of Mines Quart., VII, pp. 334-338 (quartz after interstices from North 1926, Proc. Acad....MORGAN, P. G., 1925, 'The so-called "pseudomorphous" quartz of the Tertiary goldsilver veins,' Econ. Geol. |  | | Journal (article/letter/editorial) | | Arizona 85011 jeffscovil@earthlink.net Figure 2. Fluorite, 12.3 cm across, Bisage, Puy Saint Gulmier, Puy...Ilfeld, Harz Mountains, Thuringia, Germany. Tom Moore specimen. Figure 4. Fluorite with stilbite, 11.9 cm...cm high, Malmberget mine, Gallivare, Lappland, Sweden. Scott Werschky specimen. Figure 6. Realgar, 3...specimen. Figure 5. Pyromorphite, 4 cm high, Les Farges mine, Ussel, Correze, France. Frank Sousa specimen. Volume...Figure 7. Fluorite, 7.1 cm across, Halsbrücke, Freiberg district, Erzgebirge, Saxony, Germany. Irv Brown |  | | Journal (article/letter/editorial) | | de/chemer The fluorite deposits NE of Regensburg, SE Germany—A mineralogical and chemical comparison of unconformity-related...D-30631 Hannover, Germany Bürgermeister-Knorr Str. 8, D-92637 Weiden i.d.OPf., Germany In der Zell 4, D-93149...D-93149 Nittenau, Germany a r t i c l e i n f o Article history: Received 21 November 2011 Accepted...May 2012 Keywords: Fluorite Unconformity-related Vein-type REE distribution SE Germany a b s t r a c t...fluorite mining district was located NNE of Regensburg at Nabburg-Wölsendorf, Germany. Together with some |  | | Journal (article/letter/editorial) | | Naturkunde, Theaterplatz 1, D - 09111 Chemnitz, Germany; Prof. Dr. M. Barthel, c/o Musewn fi1r Naturkunde...Hwnboldt-Universitlit, Invalidenstrafie 43, D - IO115 Berlin, Germany. Content: Abstract Zusammenfassung I Introduction...carbonised ash tuffs (SCHNEIDER & BARTHEL 1997). Quartz, biotite, mainly alterated feldspars, unwelded...STUTZER ( 1931 ), essentially based on recognition of quartz crystal fragments. BORBE ( 1959) got the same conclusion...occurrences as Chemnitz-Hilbersdorf/Erzgebirge basin, Germany (Pl. Ill, Fig. 3), Autun/Massif Central, France |  | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral — quartz — is silica (SiO,), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphibole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and are known |  | | Report (issue) | | Veszelyite on hemimorphite, 3.6 cm, from the Laochang mine, Gejiu County, Yunnan Province, China. Mintreasure... from a locality which he gives as the Laochang mine, Gejiu County, Yunnan Province, China. Some very...gave “Dulong” as the mine name, gave “Laochang” as the name of a town and not of a mine, and put the whole...==== Bournonite, 2.6 cm, from the Yaogangxian mine, Chenzhou Prefecture, Hunan Province, China. John...Yaogangxian mine, Chenzhou Prefecture, Hunan Province, China. Bournonite from the Yaogangxian mine has been |  | | Catalog/List | | £10 2x2 £15 Ix! £3 lx2 £6 I · 88 ADAMITE Ojuela Mine, Mapimi, Mexico Colourless to yellow small crystals...lx½£5 ZnAs0/4 2 AEGIRINE Mount Malosa, Zomba District, Malawi Rich mass ofblnck crystal sections ,on...£10 2x3 £15 Na Ca SiO F 7fJ 7 ■ AJOITE Christmas Mine, Gila County, Arizona USA Blue veinlets in matrix...Tysse, Hardanger,Norway single blue 3mm crystal on quartz no £5 -------------------------933 ANATASE Hingston...feldspar with minor fluorite. X 20 needed 1.5cm £4 no/2 feldspar 37 ANCYLITE Ce Dark Star Mine,Ravalli County |  | | Catalog/List | | Ohio. Twinned Chiastolite from Meteorites — Quartz Crystals. Massachusetts. The Canyon Diablo...mineral, "At were of large, prisms, of this mine have been obtained, more Note. - Galena offer...in the specimens Dundasite, bunches samples Mine, of occurs lode. beautiful white large more...originally Cornish mining ceeding by colour, Mine fractures of great the mineral often Mount ...extremely some rarely Anglesite. Embolite, back Mine. with minute of small of capping gossan the | | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral quartz — is silica (SiO2), a compound of silicon and oxygen...— some 40-50 — are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphi bole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...walls of the fissures. Well known minerals, such as quartz and calcite, originate at this stage and arc known |  | | Journal (issue) | | Although the mines of the Illinois-Kentucky fluorite district are no longer active, the thrill of discovery...during the preparation of my major article on the district (Goldstein, 1997). Geophysics professor Hal Noltimier...on the Hastie's property as well as several other mine dumps to o btain samples. In addition to Hal and...-~ . . .... _; } ..· Fig. 1 The pillar of fluorite with numerous pockets. The largest pocket in the...from near Challis, Idaho; as well as the very fine quartz pseudomorphs of apophyllite from the same region |  | | Catalog/List | | Stuart Wilensky August 2020 4 5 Fluorite on Quartz Yaoganxian Mine, Chen Zhou, Hunan Prov., China 6...6.35 cm tall x 6.35 cm wide Yaoganxian fluorite ranks at the very pinnacle of all fluorites. Of these...quality, and luster of this fluorite are without competition. 10 11 Fluorite with Pyrite Inclusions on...Manganocalcite Yaoganxian Mine, Chen Zhou, Hunan Prov., China 16 cm tall x 18 cm wide Fluorite is rarely found...combination is one of only a few ever found. The fluorite crystals color is unique. They are also exceptionally |  | | Journal (article/letter/editorial) | | superb example of the mineral. It was from Saxony, Germany, and was to me at that time a thing of beauty and...National University] at 06:43 31 December 2014 mine in Colorado, and they found virtually the entire...bornite, calcite, dolomite, siderite, barite, fluorite, and quartz. Associates also include the rare minerals...tetrahedrite and pyrite specimen from the Anchor mine, Park City, Utah. The specimen was in the stock...Sweet Home mine, near Alma, Park County, Colorado, where it occurs with rhodochrosite, fluorite, chalcopyrite |  | | Journal (article/letter/editorial) | | alternating with cassiterite (dark grey) as well as quartz-chlorite schist (black; partly with boudinage formations)...Baikal region, southern Ural and in the Kolyma district/USSR (SMIRNOV 1970). Recently Sn contents up to...Central E u r o p e (e. g. the Sudetes, H a r t z , Thuringia, Spessart, Black Forest, Vosges) are n o t Sn-specialized...siderite, oxides or carbonates of M n , barite, quartz and others ("eba-formation" type of the Erzgebirge):...galena, sphalerite, pyrite, chalcopyrite, fluorite, barite, quartz, carbonates and others (fba-formation |  | Bauer, Matthias E., Burisch, Mathias, Ostendorf, Jörg, Krause, Joachim, Frenzel, Max, Seifert, Thomas, Gutzmer, Jens (2019) Trace element geochemistry of sphalerite in contrasting hydrothermal fluid systems of the Freiberg district, Germany: insights from LA-ICP-MS analysis, near-infrared light microthermometry of sphalerite-hosted fluid inclusions, and sulfur isotope geochemistry. Mineralium Deposita, 54 (2) 237-262 doi:10.1007/s00126-018-0850-0 | Journal (article/letter/editorial) | | hydrothermal fluid systems of the Freiberg district, Germany: insights from LA-ICP-MS analysis, near-infrared...Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract The historic silver mining district of Freiberg...Freiberg (Germany) comprises hydrothermal vein-style mineralization of Permian and Cretaceous age. We compare...Bergakademie Freiberg, Brennhausgasse 14, 09599 Freiberg, Germany 2 Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz...Chemnitzer Str. 40, 09599 Freiberg, Germany Introduction The silver mining district of Freiberg is well-known |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...named according to chemical composition (e.g. fluorite). to crystallographic tenns (e .g. prismatine)...very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...to reflect the light gypsum. 3 - calcite, 4 - fluorite, 5 - apatite, 6 - ortho- beam on the polished...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage. The |  | | Journal (article/letter/editorial) | | and Fossil Areas In Germany By DR. WERNER LIEBER Dante Str. 50, Heidelberg, Germany In the January-February...to find out if there are any mineral clubs in Germany. Since this number of R&M was sent to the readers...situation here in Germany. The last question of Mr. Carter is very easy to answer. In Germany exists one club...the association is Dante-str. 50, Heidelberg, Germany. The club publishes a monthly magazine for collectors...time 1,600 members. About 90% of them live in Germany, the other 10% live in Holland, Austria, Switzerland |  | | Book | | 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia *...chrysocolla, Majdanpek, Serbia ¢ 11x8x7cm LEFT: Fluorite, Taihang Shan Mountains, Hebei, China * 19x13x1cm...Earth’s crust are composed of just a few minerals; quartz and the feldspar group are the most abundant species...periods of stability PLANET | 114 San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 om are uncommon...growth, as exemplified by tourmaline in schist, quartz or phlogopite. Space for Growth Cavities in rocks | | | Book | | 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia *...chrysocolla, Majdanpek, Serbia ¢ tixex7 cm LEFT: Fluorite, Taihang Shan Mountains, Hebei, China * (Sexes...Earth’s crust are composed ofjust a few minerals; quartz and the feldspar group are the most abundant processes...A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...growth, as exemplified by tourmaline in schist, quartz or phlogopite. Space for Growth Cavities in rocks |  | | Journal (article/letter/editorial) | | mineralization history of the Schwarzwald ore district KATHARINA PFAFF1, ROLF L. ROMER2 and GREGOR MARKL1...Geowissenschaften, Wilhelmstr. 56, D-72074 Tübingen, Germany *Corresponding author, e-mail: markl@uni-tuebingen...Geoforschungszentrum Potsdam, Telegrafenberg, D-14473 Potsdam, Germany Abstract: This study deals with the use of new...of southwest Germany. In detail, we present new U-Pb age data of ferberite (from Clara Mine), chalcedony...chalcedony (from Silberbrünnle Mine), agate (Geisberg), carneol (‘‘Markgräfler Land’’), and confirm earlier |  | | Journal (article/letter/editorial) | | building block - a mineralogicaljourney through Germany in the 'Kr0ger Haus', also located in the castle...to supply the collection with new material from Germany and abroad. lts first administrator, C. H. Lommer...'Reiche Zeche' ('rich pit') training and research mine. These will each be introduced after the developments...The 'find of the decade' of the 'WeiBer Hirsch' mine in Schneeberg in 1871 is worthy of mention in this...identified five new secondary uranium minerals in this mine. by which time the collection had grown to around | | | Book | | Several specimens of a particular mineral, e.g. quartz, may vary not only in colour (see plates) but also...graphite. The basic element of the commonest mineral - quartz - is silica (SiO 2), a compound of silicon and...- some 40-50 - are generally rock-forming, e.g. quartz, felspar, mica, pyroxene, amphibole and olivine...At a later stage they often become filled with quartz, agate or chalcedony. The largest part of the gases...the fiss,u·cs. \Xlell known n1.ineruls, such as quartz nnd -:nlcitt', originate at this stage and are |  | | Journal (article/letter/editorial) | | O'Neill. It is interesting to note the occurrence of fluorite worthy of special investigation this far south...1, Piedmont, Ala., who plowed up fluorite here in 19OO. The fluorite is green, and about one short ton...Conasauga, which has been intensely folded here. The fluorite occurs in crushed and fractured areas, perhaps...fluoresces blue (through the quartz) under the Mineralight; in addition the quartz crystal has a colorless...crystal'ized cinnabar which comes from the Culver-Baer mine, Sonoma Co., Calif. Colorado—An interesting article |  | | Journal (article/letter/editorial) | | Polymetallic Deposits in the Erzgebirge, Germany: Constraints from Fluorite (U-Th-Sm)/He Thermochronology* R...Geology, Goldschmidtstr. 3, 37077 Goettingen, Germany 2 TU Bergakademie Freiberg, Institut für Mineralogie...Brennhausgasse 14, 09596 Freiberg, Germany Abstract The Erzgebirge region of Germany records two major episodes...from Permian to early Tertiary. Here we apply fluorite (U-Th-Sm)/He thermochronology (FHe) on both types...seven mineralization localities have been dated. Fluorite from six deposits yielded Cretaceous FHe ages |  | | Report (issue) | | Variation in fineness of gold with depth, Lily mine, Transvaal, South Jlfrica ---------------------...Commo.n minerals _associated with gold in veins are quartz and pyrite. Some other common minerals associated...amphiboles, garnet, tourmaline, carbonates, and fluorite. TABLE 1.-Major gold-bearing minerals Au. Cubic...(ppm) Remarks Reference Elements Arsenic, As Germany, Andreasberg, Harz ___ _ Copper, Cu Norway, Kviteseid...------------~--------1-5 Chile, Corrizatillo --------------5-10 Germany, Biihl, near Kassel _____ _ .5 Czechoslovakia, |  | | Journal (issue) | | Laura Aaron collection, page 11. (rniddle colurnn) Fluorite-Bruce and Marcia Friedman collection, page 105;...collection, page 155; Fluorite-Samuel Cooper collection, page 67. (rniddle colurnn) Fluorite, 5.3 cm, from Naica...Calcite-Kevin & Mark Brown collection, page 52; Smoky quartz gwindel-Brent Lockhart collection, page 175; Aquamarine-Wally...Foote also made several collecting visits to the mine in 1890-1891, and brought back many good specimens...chemist and physicist). In 1895 Niven purchased the mine from its owner, on behalf of Thomas Edison. In the |
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