 | | Journal (article/letter/editorial) | | ABsrRAcr The Climax pegmatite of the Micanite district in Colorado contains unusually large masses of...discussed. IurnooucttoN The Micanite pegmatite district iies acrossthe Park-Fremont County line in south-centralColorado...rocks that include granitic gneiss, muscovite gneiss, siliimanite gneiss, mica schist, and biotite granite...grinding quality muscovite were obtained. Within the district ten major quarriesand prospectsare recorded(Fig...Colorado, showing location of the Micanite pegmatite district and the Climax deposit. cordierite, pinite, hematite |  | | Journal (article/letter/editorial) | | Berkshire; Ha#on attd Shabbington Wood, Buckinghamshire; Lower Froyle, Selt)orne, and West Worldham, tlampshire;...Upnor, Kent. Cornwall Bosahan quarry, Falmoath, biotite, 21o. Dean quarry, Coverack, The Lizard, analcime...6 t. St. Gotthard, orthoclase, 489. Schyn-Schhtcht, Grisons, albite, I56. Austria (Osterreich) Burgstein...153. Meidling im Tal, Lower Austria, omphacite, 6I. Mitterbachgraben, Lower Austria, omphacite, 6i. Mitterburg... montebrasite, 414. Poland (Polska) Jordan6w, Lower Silesia, chromian hydrogrossular, 241. Nowa Wies |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. The minerals...see Juddite, Magnesio-arfvedsonite. Arkansas, orthoclase, anal., d2o T, 489. Arsenolamprite, Chile, anal...(abstr.), xliii. Black Hill, South Australia, orthoclase, anal., d2o T, 489. Black Hills, South Dakota...Zealand, grandidierite, 615. Blende, Algeria, Austria, Congo, France, Greece Spain, Yugoslavia, cathodoluminescence...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.) |  | | Book | | grain structure. It contains mostly quartz and orthoclase feldspar with some smaller amounts of a darker...distinct bands which help to identify the rock. ■10 Gneiss is similar but contains less mica — it may have... . _ a Basalt Slate Schist 16 Phyllite Gneiss Homfels 17 Quartzite Marble Skam 18 Sedimentary...produced where necessary. Monoclinic system Orthoclase The monoclinic system has three crystallographic...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where |  | | Journal (article/letter/editorial) | | et al. 1982), Zambia (áèek Vrána 2002) and Austria (Ertl et al. 1997, Kalt et al. 2001). They are...gave T ~ 670 °C and P ~ 14 kbar for migmatitic gneiss. Anatexis producing kyanite-bearing leucosome was...whole outcrop, cuts massive migmatized biotite gneiss. The veinlet is locally folded, generally WNW-trending...about 1 cm thick, crosscutting the host biotite gneiss. Pegmatite veinlets of the AB-BBe subclass from...used: Na albite, Ca, Si wollastonite, K orthoclase, Mg MgO, Fe Fe2O3, Cr chromite, Mn rhodonite |  | Zahradník, Jan, Jirásek, Jakub, Starý, Jaromír, Sivek, Martin (2020) Production, Reserves, and Processing of Feldspar and Feldspathoid Rocks in the Czech Republic from 2005 to 2019—An Overview. Minerals, 10 (8) 722 doi:10.3390/min10080722 | Journal (article/letter/editorial) | | low melting points, such as alkali feldspars (orthoclase and microcline) and Na-rich plagioclase (albite)...O Na2 O CaO Al2 O3 SiO2 Alkali Feldspars Orthoclase Microcline Albite KAlSi3 O8 KAlSi3 O8 NaAlSi3...In the first place, it is mining by an open pit (quarry) with the use of blasting and subsequent treatment...higher than 75% (equal content of albite and orthoclase) copy the course of contact with the underlying...higher than 75% (equal content of albite and orthoclase) copy the course of contact with the underlying |  | | Journal (article/letter/editorial) | | striJverite, 605 British Isles ENGLAND Bosahan quarry, Carnmenellis, Cornwall, granite (weathered), kaolinite...fluorite, 4Ol Hazlehead quarry, Penistone, muscovite, I76 Hepworth Iron Co. quarry, Hazlehead, Penistone...Swinden Limeworks quarry, Linton, fluorite, 4oi WALES(Cymru) Dorothea slate quarry, Nantlle, muscovite...CO2metamorphosed lavas, ankerite, chalybite, 119 Binhill quarry, Cairnie, Huntly, Aberdeenshire, tacharanite, scawtite...hornblende-schist, laumontite, prehnite, kaolinite, 608 Hagdale quarry, Unst, Shetland, nickel hydroxide and (?) oxyhydroxide |  | | Book | | structures or arrangements of components) like gneiss, schist, phyllite, and slate, many others are granoblastic...rock names used in English have come from German: gneiss, greisen, kieselguhr, knotenschiefer, loess, meerschaum...[Vulcan, Roman god of fire], plutonite (Pluto and the lower world), and Pele’s hair (Hawaiian fire goddess)...feldspar, in a groundmass of labradorite with orthoclase rims, olivine, augite, and some leucite. [ Absaroka...(scyelite), hornblende-biotite-pyroxene rock, orthoclase sodie-plagioclase rock (perthosite). [Ach-uaine |  | | Journal (article/letter/editorial) | | (Moldanubian terrain, Austria) Robert Sturm Brunnleitenweg 41, A-5061 Elsbethen, Austria a r t i c l e i...a c t A medium-scale shear zone exposed in the gneiss rocks of the South-western Bohemian Massif (Moldanubian...south-western Bohemian Massif (Moldanubian terrain, Austria). Chemie Erde - Geochemistry (2016), http://dx...migmatites and gneisses, and the Drosendorf unit, a gneiss complex with marbles, calc-silicates, and amphibolites...Bavarian forest to the Rodl valley (Fig. 1c). The quarry, in which the cordierite-bearing mylonites are |  | | Book | | Smith, and Klein Rouse, Dunn, Grice, Schlenker, and Higgins Boggs, Howard, Smith, and Klein Origins...composition), 600 to 900 meters thick, in the Oligocene to Lower Miocene John Day Formation in central Oregon (Hay...natrolite, gonnardite, gismondine, and faujasite; and a lower zone (up to 8 meters thick) that is analcime-dominant...covering of the flow by additional flows before the lower flow has cooled, differences in chemical environment...vesicular base of Oligocene to Lower Miocene columnar basalt in the Narre Warren Quarry, near Melbourne, Australia | | | Book | | Smith, and Klein Rouse, Dunn, Grice, Schlenker, and Higgins Boggs, Howard, Smith, and Klein Origins...composition), 600 to 900 meters thick, in the Oligocene to Lower Miocene John Day Formation in central Oregon (Hay...natrolite, gonnardite, gismondine, and faujasite; and a lower zone (up to 8 meters thick) that is analcime-dominant...covering of the flow by additional flows before the lower flow has cooled, differences in chemical environment...vesicular base of Oligocene to Lower Miocene columnar basalt in the Narre Warren Quarry, near Melbourne, Australia |  | | Journal (article/letter/editorial) | | vein-type deposit of the Alpeinerscharte, Tyrol (Austria) and its relation to Variscan granitoids F. Meicher...f'tirGeowissenschaften,Montanuniversit~it,A-8700 Leoben, Austria Received: 5 December 1993/Accepted: 24 October...The molybdenite deposit of the Alpeinerscharte (Austria) is situated in Variscan greenschist- to amphibolite-facies...7-10kbar). Leucocratic rocks composed of mainly orthoclase and plagioclase are occasionally spatially related...gneisses of the Tux Gneiss core, which represents the middle of three main Central Gneiss ("Zentratgneis") |  | | Book | | in the upper lobe. This lobe is larger than the lower lobe. HOMEOMORPHY: The state of two not necessarily...Palaeozoic Phanerozoic -345 Devonian "395 Silurian Lower Palaeozoic -440 Ordovician — 500 Cambrian -600...dense silicates are forming, a family of pale, lower-density feldspars, the piagioclases, will also be...feldspars to develop with sodium-rich albite at the lower temperature end and a plagioclase with 50 per cent...albite. Towards the end of the cooling sequence, orthoclase, muscovite and quartz form. The sequence outlined |  | | | | Fine marble (p. 294) quartzite (p. 294) granite gneiss (p. 290) quartzite (p. 296) Beginner's Guide to...schist (p. 286) quartzite (p. 286) Dark amphibole gneiss (p. 280) slate (p. 284) serpentinite (p. 298)...Township, Cochrane District, Ontario; Darwin Mine, McMurray Township, Algoma District, Ontario; nuggets...(48728): Dendritic, or Treetice. habit PD SE ES Yale District, British Columbia. Width of specimen: 5 cm Similar...Kamloops District, British Columbia; Burwash Creek, Yukon Territory; Coppercorp Mine, Algoma District, Ontario; |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . 14 Tertiary Flora of the Lower Rhine~ P. WESSEL and 0. WEBER on the 5 U~GER. On...to the Tertiary Flora of the Brown-coal of the Lower Rhine~ noticed . . . . . . . . . . WOT.F, H. On...Tertiary Flora of the Brown-coal formation on the Lower Rhine. Whatever judgment we may form as to the value...already known, from the Brown-coal of this one district amounts to 237 supposed species. Of these, 94...as yet been detected nowhere but in the Rhenish district. As regards the geological relations of the localities |  | | Journal (article/letter/editorial) | | Novosedly Šebanov lda 20 km Český Krumlov Austria Mo N ath oli th České Budějovice Fig. 1...Mn-rich garnet–quartz rocks. 2. Geological setting gneiss and amphibolite, is assumed to be mainly Neoproterozoic...abundant layers of marble, calc-silicate gneiss, graphite gneiss, quartzite and amphibolite in addition...co-ordinates is given in Tab. 1. 3.1. Pacova hora quarry near Chýnov The Moldanubian Zone is a heterogeneous...al. 1995) and the Mesoproterozoic Dobra gneiss in Lower Austria (Gebauer and Friedl 1994; Friedl et al |  | | Journal (article/letter/editorial) | | mine) and is a constituent of granite, aplite, gneiss, schist, and phyllites. Muscovite as the fine-grained...muscovite with albite, 2.8 cm high, from the Strickland quarry, Portland, Middlesex County, Connecticut. This...8 cm wide, from the Santo Niño mine, Patagonia district, Santa Cruz County, Arizona. Barbara Muntyan specimen...Newry (King and Foord 1994). The Black Mountain quarry, Rumford, Oxford County, was one of the biggest...fine transparent, gold-brown color. The BB No. 7 quarry in Norway, also in Oxford County, has produced |  | | Catalog/List | | grey-white crystals on 2x3.5 inch surface. (Croft Quarry,Leicestershire) £5 ANATASE sharp black single crystal...on the surface, on feldspar. (Globe Mine.Petaca District, Rio Arriba County, new Mexico) £15 b) smaller...top, light brown fibrous on the edges. (Merehead Quarry, Mendips) 2x2.5 £4 HELVITE quite rich light brown...rich black xlline mass in matrix (Laytonville District,Mendocino County, California USA) 2x3 £ 16 bY...Oligoclase quartz and Biotite. Bjordammen Norway £3 ORTHOCLASE, crystals to 2 inch size, with 1:\vo or three |  | | Journal (article/letter/editorial) | | Karnataka, India. Gogi is a village in the Yadgir district of Karnataka where groundwater is the main source...spans over 1680 km2 and is located in the Yadgir district of Karnataka. The Krishna and Bhima rivers flow...study area is composed of granite and peninsular gneiss as basement due to the gentle slope of this region...study area is composed of granite and peninsular gneiss as base‐ colored potassic granite (Figure 2). ment...formations in the area are granite, vesicular basalt, gneiss, and limestone. The aquifer zones in the Gogi region |  | | 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...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...in 2002 in a calcite-carbonatite vein intruding gneiss, together with very large Baveno-law-twinned crystals...1991). Simdeled, Aust-Agder. Early in 1999, in a quarry near S~ndeled, collectors opened a pocket containing |  | | Book | | derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric finds have...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...monoclinic Pl. 39 augite, Pl. 40 hornblende, Pl. 44 orthoclase, Pl. 45 adularia, Fig. 23 augite and hornblende...symmetr:y ar:e no longer: present (Fig. 16a, p. 93). A lower: cr:ystallogr:aphic symmetr:y is often only shown |  | | Catalog/List | | 'holy fallen filled with the olivine it district: from or at regarded The moderate a at high...Meteoric Stone, or Iron Moes, Transylvania, Austria-Hungary. Meteorites, Canon Diablo, Arizona. Kiowa...the crystals sandstone allows cabinet are is Austria-Hungary, brown coal formation.” am cases and...are scarcer. instances, material, Pater- at quarry received the entire we in- or through the...Von 2O to be Thaumasite the he and dis- quarry, West aggregate of pris- matic uals crystals | | | | | gypsum; (3) calcite; (4) fluorite; (5) apatite; (6) orthoclase; (7) quartz; (8) topaz; (9) corundum; (10) diamond...Australia, at Mount Morgan Mine, from Chartres Towers district, from Hillgrove, from Hill End, and large production...U.S., nice bladed crystals occur in the Darwin district, Inyo County, California; also at Antimony Peak...California; and large crystals come from the Rand district, San Bernardino County. Long crystals at Manhattan...In U.S., very abundant in Tri-State lead-zinc district as cockscomb forms. Very excellent cockscomb crystals |  | | Book (edition) | | (3) calcite; (4) fluorite; (5) apatite; (6) orthoclase; (7) quartz; (8) topaz; (9) corundum; (10) diamond...Chartres In Australia, at Mount Morgan Towers district, from Hillgrove, from Hill End, and large production...U.S., nice bladed crystals occur in the Darwin district, Inyo County, California; also at Antimony Peak...California; and large crystals come from the Rand district, San Bernardino County. Long crystals at Manhattan...U.S., very abundant in Tri-State lead-zine district as cockscomb forms. Very excellent cockscomb |  | | Journal (article/letter/editorial) | | rocks of the Moldanubicum (Bohemian Massif) in Austria A. Beran 1, R. G6d 2, M. G6tzinger 1 and J. Zemann...University of Vienna, Austria 2 MINEREX Mineral-Explorationsgesellschaft mbH, Vienna, Austria Abstract. In the...the Moldanubicum (Bohemian Massif) of Austria a tungsten mineralization bound to calc-silicate rocks was...in analogous rocks of the same geologic unit in Austria seemed to be worthwhile. The first results were...Vienna, Austria); for geologic maps see sheets 20 GF0hl and 37 Mautern of the Geologic Maps of Austria 1 : |
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