 | | Journal (issue) | | Front cover: Fluorite on Amazonite 7.5 cm, from the Smoky Hawk claim, Colorado. Collected by the Dorris family;...from left: Fluorite, 6.7 cm, from the Weisseck, Austria. Collected by Reinhold Bacher; Reinhold Bacher...Fluorapatite, 3.3-cm crystal, from the Pulsifer quarry, Maine. Collected by Terry Szenics; Jeff Scovil...rosette, with prehnite, 14 cm, from the Centreville quarry, Fairfax, Virginia. Smithsonian Institution collection...C6649; Lee Boltin photo. Fairfax Quarry, Virginia, 1967 The Fairfax quarry in Virginia is a classic locality |  | Helmy, HassanM., Kaindl, Reinhard, Fritz, Harald, Loizenbauer, J�rgen (2004) The Sukari Gold Mine, Eastern Desert?Egypt: structural setting, mineralogy and fluid inclusion study. Mineralium Deposita, 39 (4) doi:10.1007/s00126-004-0426-z | Journal (article/letter/editorial) | | 1.5–2 kbar. Gold is associated with sulfides in quartz veins and in alteration zones. Pyrite and arsenopyrite...followed by sealing, initiated by the intrusion of granodiorite. This cyclic process explains the mineralEditorial...and Petrology, Universitätsplatz 2, 8010 Graz, Austria E-mail: reinhard.kaindl@uni-graz.at Tel.: +43-316-3805522...and Paleontology, Heinrichstrasse 26, 8010 Graz, Austria ogical features and is responsible for the predicted...gold sulfide, gold-ferruginous quartzite and gold-quartz vein formations, the latter being the most important |  | | Journal (issue) | | by W. E. Wilson The Hallelujah Junction scepter quartz deposit, Petersen Mountain, Nevada ..............by C. J. Stefano & J. Betts The Irving Materials quarry, Anderson, Indiana ..................................................................297 COVER: QUARTZ SCEPTER, 29.7 cm, from the Hallelujah Junction...enjoyed special free access to the Prospect Park quarry near Paterson, New Jersey, and built up a fine...minerals. He vividly recalled digging around in a quarry one day and opening up a big vein lined with brilliant |  | | Journal (article/letter/editorial) | | principal rock of the district is granodiorite. The vein is a quartz-filled fissure in quartz-diorite. Mineralization...xline—Crystalline The specimens are: No. 1—Typical quartz-diorite ore, showing chalcopyrite. No. 2—Typical...rhyolite and massive smoky quartz; the surface of the quartz shows drusy milky quartz. A letter, dated March...only the name of the country, such as Germany or Austria." The clipping showed a picture of the 350 million...found in only three places in the World, Germany, Austria, and Canon City. "Locally, Kessler said, remains |  | | Journal (article/letter/editorial) | | batholith north of the economically-renown Skellefte district. Four different molybdenite samples from outcrop...(Björntjärn) and Munka Mo–(W) deposits in the Rappen district are represented by three outcrop and five drill...Sweden; Nevoria, Western Australia; Alpeinerscharte, Austria; Erzgebirge, Germany; Sardinia–Corsica Batholith)...gneissic rock essentially defines the local and district metallogenic suite. In the absence of focusing...molybdenite and other sulfides for dating mineralized quartz veins of metamorphic origin has also been established |  | Tombros, S., St. Seymour, K., Williams-Jones, A. E., Spry, P. G. (2007) The Genesis of Epithermal Au-Ag-Te Mineralization, Panormos Bay, Tinos Island, Cyclades, Greece. Economic Geology, 102 (7) 1269-1294 doi:10.2113/gsecongeo.102.7.1269 | Journal (article/letter/editorial) | | marbles, comprises 30 subparallel, steeply dipping quartz veins that extend for at least 500 m. In places...associated with precious metal-bearing milky and clear quartz veins. The Au-Ag-Te mineralization is developed...per mil for waters in equilibrium with muscovite, quartz, and talc are consistent with the ore fluids being...spatially associated with quartz ± alunite ± kaolinite ± dickite and quartz ± calcite ± adularia ± illite...illite alteration, it is more common in quartz ± calcite ± adularia ± illite alteration, where it forms |  | | Book | | ILLUSTRATION: Amethyst scepter heads growing upon milky quartz stems. Denny Mountain area of King County. Specimen...tal). Colorless or white, six sided crystals of quartz are a familiar and obvious example of a mineral...naked eye. GRANITES, MONZONITES, GRANODIORITES a. Quartz, orthoclase, microcline, oligoclase, albitc, blotite...riebeckite, aegirine, aenigraatite b. DIORITES Quartz, biotite, albite, anorthoclase, sphene, ilmenite...a. RHYOLITES (extrusive equivalent of granite) Quartz, hornblende, biotite, feldspars. b. ANDESITES |  | | Book | | MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege. Operated for talc since the beginning...beginning of the 20th century, the Trimouns quarry became well known to collectors around 1990 for the...Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment, |  | | Journal (article/letter/editorial) | | felsic plutons including those of granite and quartz-monzonite composition, and roll-front and other...including the well190 ROCKS & MINERALS known Dunton quarry at Newry where small though welldeveloped crystals...crystals have been found, the Lord Hill quarry at Stoneham where nice specimens containing groups of autunite...autunite crystals to 8 mm associated with smoky quartz crystals have been collected (King and Foord 1994;...Middlesex County localities, including the Worth quarry at East Hampton, the Tollgate mine and White Rock |  | Li, Xun, Aibai, Abulimiti, He, Xiheng, Tang, Rongzhen, Chen, Yanjing (2022) Chemical Composition and Strontium Isotope Characteristics of Scheelite from the Doranasai Gold Deposit, NW China: Implications for Ore Genesis. Minerals, 12 (5) 637 doi:10.3390/min12050637 | Journal (article/letter/editorial) | | and Permian albite granite dykes. The ores are quartz veins and altered tectonites (rocks). Here, scheelite...observed in the early-stage milky quartz veins, the middle-stage smoky quartz-polymetallic sulfide veins, and...as porphyry–skarn tungsten–molybdenum deposits, quartz vein tungsten deposits, and orogenic gold deposits...granite dykes, early-stage milky quartz veins, and middle-stage quartz–polymetallic sulfide veins occurring...include the Upper Devonian Kumasu Formation and the Lower Carboniferous Hongshanzui Formation, which are composed |  | | Journal (article/letter/editorial) | | common minerals of microcline, bladed albite, and smoky quartz are enhanced by a purple or green cube of fluorite...5.7 cm, from the Conway Granite, near Red Stone quarry, Conway, Carroll County, New Hampshire. Henry Minot...Holt (1990) 6 Santa Teresa Mountains, Aravaipa district, Graham County, AZ, USA Santa Teresa Mountains...biotite-hornblende granite quartz, microcline, beryl Moore (2009); Ross (1925) 7 South Platte district, Buffalo Creek...Rare-Element zircon, allanite, anatase, scepter quartz Roberts et al. (2009); Greenwood (1964); Barker |  | | Journal (article/letter/editorial) | | the range is a mass of plutonic rock (mostly granodiorite) known as the Sierra Nevada batholith. A belt...Nevada are not in the Mother Lode system of gold-quartz veins. Many specimens have, in fact, come from...melonite, the last of which Figure 3. The Colorado Quartz mine near Midpines, Mariposa County, producer of...6 cm tall, Black Morel mine, Greenhorn Summit district, Kern County (LACMNH33150). 398 ROCKS & MINERALS...first described from here in 1868), the Colorado Quartz mine in Mariposa County, the Red Ledge mine in |  | | Journal (issue) | | Boreholes in the Carboniferous rocks of the.A:s:hover district, Derbyshire, by W. H. C. Ramsbottom, M.A., Ph...Appendix A: Petrography of the Fallgate and Milltown Quarry boreholes, by R. W. Elliot, B.Sc. . . . .· Appendix...showing geology of western end of the Criffcll granodiorite Geological map of Colvend cliffs and shore,...mineralization to coastal faulting and margin of Criffell granodiorite .. Sketch map showing distribution of mineral...radiometry of the Castleton district Radiometry of the east face of Windy Knoll Quarry, near Castleton Radiometry |  | | Journal (article/letter/editorial) | | discovered only in a limited outcrop at the Laghetto quarry, close to the Cuasso al Monte village. Thortveitite...and a second specimen was found at the Mantegazza quarry during the present study. Similar to other localities...white); (6) two mica granite; (7) xenolite-rich granodiorite; (8) Hercynian metamorphic basement with indicated...32582) collected during this study at the Mantegazza quarry was identified but was not selected for quantitative...30853) Paragenesis In massive white granite (smoky quartz, white K-feldspar, white albite and rare biotite) |  | | Journal (article/letter/editorial) | | Silica and Silicates ( 107 ) from the pegmatites at QUARTZ, silica, Si02, is an essential mineral in the granite...granite pegmatites. Massive, white, or smoky colored crystalline quartz often makes up the greater bulk of...are of pink or the rose quartz variety. Rock crystals, or the colorless quartz crystals, are often found...found as well as are smoky quartz crystals in the cavities of druses which occur in many pegmatites. Amethyst...Amethyst, the purple colored variety of crystalline quartz, usually is found in crystals in cavities or pockets |  | | Journal (issue) | | JANUARY–FEBRUARY 2019 Articles The Almadén mining district, Ciudad Real, Spain ............................Sickinger MARCUS BUDIL Monaco budil@monaco.mc Quartz var. Gwindl, Galenstock, Uri, Switzerland, 9 cm... Maharashtra, India 6 cm The Almade;n Mining District, Ciudad Real, Spain Borja Sainz de Baranda Graf...Alcala de Henares (Spain) The Almadén Mining District exploited the largest mercury deposit in the world...in 2012, the district was declared a World Heritage Site by Unesco. The Almadén District has yielded excellent |  | | Journal (article/letter/editorial) | | miles east of Uniontown. The locality is in an old quarry along the north side of the highway about a mile...rocks, too, may be collected such as granite, granodiorite, mica schist, and gneiss. About 4 p.m., we left...crossed the border of North Carolina, to examine quartz dikes cutting the schist formations, but we did...in finding in this same field some good, clear quartz crystals. Hendersonville was reached this night...apatite in round masses up to lx3 inches, rose quartz of a pale color and sugary texture, biotite mica |  | | Journal (issue) | | to 4 cm, on matrix, from Ghundao Hill, Mardan district, Pakistan. F. John Barlow collection; photo by...- Czech Republic Erich's Minerals Wholesale - Austria Eurasia Stone Corp. - Holland / Russia Excalibur-Cureton...Tiger Trading Co. Top M inerals International - Austria Tradewell Im ports Trap Hills M ining Tynsky, James...Rock & Jewelry Kennedy's, The L & J Fossils - Austria Leonhardt & Partner - Germany Look of The Past...Schneckenstein, Saxony. 4 = Urulga River, Nerchinsk district, Siberia. 5 = Mt. M akrushi, near Alabashka, M |  | | Journal (article/letter/editorial) | | workings, June 2016. Note mine portal at end of lower terrace (lower left corner), compressor on upper terrace...mineable concentrations of metal-bearing ore and quartz outcrops. Samples were always assayed, and if results... give the miner the metal values, and keep the quartz for use as flux in the smelting process. As shown...Little Gem hosts many pegmatites that have produced quartz crystal specimens. Some, including the Little Gem...collecting minerals for forty years, has written about quartz from the Alberta Badlands in Canada, the minerals |  | | Journal (article/letter/editorial) | | Localities of the Central Swiss Alps Figure 1 (above). Quartz ‘‘gwindel” (elongation along a-axis), Fieschergletscher...Burgener, Fiesch. Figure 2 (left). Rose fluorite and quartz, Goscheneralp, Canton Uri. Fluorite octahedron...discovered that consisted of numerous well-shaped quartz crystals from the adjacent mountains. As early...Naturalis, described the professional search for quartz crystals in the Alps, telling of people who tried...collectors: The dagger broke with the attempt to extract quartz crystals from an Alpine fissure. The blade remained |  | | Journal (article/letter/editorial) | | MINPET 2017 INNSBRUCK / AUSTRIA SEPTEMBER, 6th - 9th 29 MITT.ÖSTERR.MINER.GES. 163 (2017) HIGH-TECH...Institute, Innsbruck University, 6020 Innsbruck, Austria. Department of Applied Geological Sciences and...and Geophysics, Montanuni, 8700 Leoben, Austria. 3 GeoZentrum Nordbayern, FAU Erlangen-Nürnberg, Schlossgarten...all Tösens district ore (except Hochjoch) defines a low-Mn/high-Hg group. Most Nauders district ore (Knappental...University of Graz, Univesitätsplatz 2, 8010, Graz, Austria 2 Department of Geology, University of Botswana |  | | Journal (issue) | | Mandarino Famous mineral localities: The Annaberg District, Lower A u stria ...................................occurring in granitic pegmatite and polymetallic quartz vein set tings. It is commonly associated with...Diligent examination of polymetallic hydrothermal quartz veins containing copper, bismuth and vanadium and...several milli meters in diameter in vugs within the quartz matrix. Morass Creek Gorge, Australia Birch et...(1972) gives a detailed description of this unique quarry and its yttrium-niobiumbismuth-vanadium mineral |  | | Journal (article/letter/editorial) | | inter-granular melt bodies, and associated magmatic quartz veins formed in tectonic fissures. Together, these...suggested by some authors. Using melt inclusions in quartz from the aplitic and graphic granite zones in miarolitic...homogenization measurements on melt inclusions in quartz of graphic granite of the chamber pegmatites from...and quartz) – see Martin and De Vito (2014). An approximately 2 mm-thick cryptocrystalline quartz–feldspar... mostly in the footwall portion). 3. Graphic quartz-feldspars intergrowths (graphic granite) often |  | | Journal (article/letter/editorial) | | inclusions become increasingly common towards the quartz cores of the pegmatites, and are considered to...important implications for the formation of the quartz cores of pegmatites. The possible origin of the...gel inclusions, origin of alkali carbonate melts, quartz core formation. Introduction PREVIOUS studies...common presence of massive almost monomineralic quartz cores, which indicates the deposition of very large...solubility of quartz in hydrothermal solutions is used to explain the presence of this quartz, a mass balance |  | Carrier, A., Jebrak, M., Angelier, J., Holyland, P. (2000) The Silidor Deposit, Rouyn-Noranda District, Abitibi Belt:Geology, Structural Evolution, and Paleostress Modeling of an Au QuartzVein-Type Deposit in an Archean Trondhjemite. Economic Geology, 95 (5) 1049-1065 doi:10.2113/gsecongeo.95.5.1049 | Journal (article/letter/editorial) | | 1049–1065 The Silidor Deposit, Rouyn-Noranda District, Abitibi Belt: Geology, Structural Evolution,... and Paleostress Modeling of an Au Quartz Vein-Type Deposit in an Archean Trondhjemite ALAIN CARRIER...orogenic gold-bearing quartz vein deposits within the Rouyn-Noranda mining district occur mainly within...hematite-altered trondhjemite. Measured δ18O values for quartz veins (7.7–10.9‰) and δ34S values for pyrite (–6...The mineralized zone comprises: vein quartz (white, gray, and smoky varieties), beige mineralized trondhjemite |
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