 | | Journal (article/letter/editorial) | | which time they were correctly identified as a copper silicate and described as a new mineral by several...finely crystalline massive aggregates. Dioptase is a copper silicate hydroxide with a formula of Cu6(Si60,...exclusively restricted in its occurrence to the oxidation zones of copper-bearing deposits in arid climates...County, Pennsylvania (Gordon 1922). An unusual occurrence of dioptase associated with paramelaconite, atacamite...reported from the Santa Rita district, Grant County, and the Orogrande district, Otero County, New Mexico |  | | Book (edition) | | view, a quartz crystal meter (3 1 feet) long will have the same angular measurements as a quartz millimeter...SIMPLE CRYSTALLINE FORMS MINERALS *or trigonal copper trisocta- silver hedron trisocta- gold platinum...hexagonal dipyramid dihexagonal prism hexagonal prism quartz left) basal pinacoid trapezohedron HEXAGONAL...ditrigonal TRIGONAL TRAPEZOHEDRAL trapezohedron quartz cinnabar rhombohedron trigonal dipyramid ditrigonal...crystal structures characterized by a metallic bond {copper), covalent bond (diamond) and ionic bond (fluorite) |  | | Book (edition) | | very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...common are malleable (e.g gold). ductile (e.g. copper). sectile (e.g. chalcocite). elastic Optical co11sta11ts...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite, sursassite, ardennite, Triclinic |  | Gu, X. X., Tang, J. X., Wang, C. S., Chen, J. P., He, B. B. (2003) Himalayan magmatism and porphyry copper-molybdenum mineralization in the Yulong ore belt, East Tibet. Mineralogy and Petrology, 78 (1) 1-20 doi:10.1007/s00710-002-0203-6 | Journal (article/letter/editorial) | | 1007/s00710-002-0203-6 Himalayan magmatism and porphyry copper±molybdenum mineralization in the Yulong ore belt...zone, around which are distributed a phyllic or quartz±sericite±pyrite zone, a silici®cation and argillic... Introduction There are two important porphyry copper±molybdenum metallogenic belts in the Tethys-Himalayan...western back arc basin. The Yulong belt Porphyry copper±molybdenum mineralization 3 Fig. 1. Simpli®ed...and=or Porphyry copper±molybdenum mineralization 5 biotite monzogranite, through quartz monzogranitic |  | | Journal (article/letter/editorial) | | Structural evolution of the Port Wells gold mining district, Prince William Sound, south central Alaska: Implications...gold mining district, Alaska, indicate several stages in the structural history of the district. The first...Several generations of epigenetic gold-bearing quartz veins were emplaced along the fractures at a later...relationships of the intrusives to the mineralized quartz veins have seldom been established. Using mass...formation of the auriferous quartz veins. The study of the Port Wells gold mining district provides further evidence |  | | Book (edition) | | text. Cloth, 83.00 net. maps, 9, Clays: Their Occurrence, Properties and Uses With Especial Reference...XIV. Ore Deposits XV. 429 Iron Ores 502 XVI. Copper 568 XVII. Lead and Zinc XVIII. Silver 621 ...and water " 29. Contour map of sand," showing occurrence of gas on a structural larity in thickness ...structure of western field of Los 104 Angeles district 106 Section of Spindle Top oil field near Beaumont...Galveston, Tex 32. Hypothetical section in same district as Fig. 31 33. Map showing lines of sections in |  | | Journal (article/letter/editorial) | | Springer-Verlag 1975 Hydrothermally Altered and (Copper) Mineralized Porphyritic Intrusions in the Serbo-Macedonian...alteration haloes a sulfide mineralization of porphyry copper type with pyrite, chalcopyrite, galena, sphalerite...posttectonic intrusions Hydrothermally Altered and (Copper) Mineralized Porphyritic Intrusions t -, 197...monzogranite, granodiorite, tonalite, quartz monzodiorite, quartz diorite and diorite field. In the Vertiskos...Monzegronite 5 9" Io* I0 Granoalortte To~olit e Quartz monzodior~ Quartz diorife Diorite 60 • lnlrusives Q Porphyries |  | | Journal (issue) | | ..................... 2 Trip Report – Malbunka Copper Mine, Areyonga, Northern Territory ..............collection (previously in Bernie Day collection) and has quartz, pyrite, vivianite and fluorite as associates....Micromineral News: Issue 7 Trip Report – Malbunka Copper Mine, Areyonga, Northern Territory Dehne McLaughlin...continues to unravel. I have determined that a copper oxide (malachite and cuprite?) rich fault depicted...previously thought it was an area of copper stained rock filled with leached copper from the higher elevated azurite |  | | Book (edition) | | whose abundance is measured in potentially of occurrence the to alert ly teur mineralogists have become...Calcite Fluorite Apatite 6 7 8 9 10 Orthoclase Quartz Topaz Corundum Diamond In a few descriptions we...especially iron, manganese, titanium, chromium, and copper. Despite its many variations and complexities,...given in this subheading. INTRODUCTION Mode of Occurrence: To give even a marginally adequate petrologic...crystallize with right- or left-handed forms (e.g., quartz). epitaxy Overgrowth of one crystal on another | | | Book (edition) | | mineralogists have become increasingly alert to the occurrence of potentially new species. The purpose of this...Calcite 4 Fluorite 5 Apatite 6 7 8 9 10 Orthoclase Quartz Topaz Corundum Diamond In a few descriptions we...especially iron, manganese, titanium, chromium, and copper. Despite its many variations and complexities,...given in this subheading. INTRODUCTION Mode of Occurrence: To give even a marginally adequate petrologic...crystallize with right- or left-handed forms (e.g., quartz). epitaxy Overgrowth of one crystal on another |  | | Journal (issue) | | camera at room temperature (c.23°C) using filtered copper (AKa. = 1.54051A), cobalt (AKa. = 1.78892A) and...and these stones also show no fluorescence when copper sulphate solution is used as a filter. In contrast...varieties including chromian and vanadian), smoky quartz, sphene (?) and both clino- and ortho-pyroxenes...] J. Gemm., 1978, XVI, 3 177 NOTES ON THE OCCURRENCE AND MINERALOGY OF EMERALDS IN RHODESIA By SUSAN...south side of the Mweza Greenstone Belt, Belingwe District, 5.2 km west-southwest of the confluence of the |  | | Book (edition) | | minerals have been added and the localities of occurrence have been updated and expanded. The special uranium...seldom present, with a resultant paucity of occurrence) tend to be in smaller crystals. Common minerals...same no matter where the mineral is found. The quartz sand of Coney Island has one part of silicon and...(called SiO, in chemical shorthand), just like the quartz sand of the Sahara Desert. In scientists’ attempt...that of quartz can be determined by scratching a quartz crystal face — showing whether quartz is present |  | | | | its primary mineral constituents, feldspar and quartz, granite is a very hard rock that resists weathering—a... Minerals of various kinds, including calcite, quartz, and iron oxide, cement the layers. LARGE AND...results is composed of a variety of minerals, usually quartz or calcite, but also aragonite, magnetite, barite...ENDLESS CYCLE Amethyst, a purple variety of quartz, some- times lines the cavities of geodes. Calcite...fine-grained that its individual minerals—such as quartz, feldspar, mica, and chlorite—cannot be seen without |  | | Book (edition) | | made up of less than a dozen species, with two, quartz and feldspar, coming in at about 90 percent. All...seldom present, with a consequent infrequency of occurrence) tend to form smaller crystals. Common minerals...matter where they are found, even on the Moon. The quartz sand of Coney Island has one part of silicon and...oxygen (SiC>2 in chemical shorthand], just like the quartz sand of the Sahara Desert. In scientists' attempts...the surface. Re- IGNEOUS ROCKS lembling smoky quartz and known to collectors as "Apache tens,' they |  | | Book | | its primary mineral constituents, feldspar and quartz, granite is a very hard rock that resists weathering-... Minerals of various kinds, including calcite, quartz, and iron oxide, cement the layers. LARGE AND SMALL...results is composed of a variety of minerals, usually quartz or calcite, but also aragonite, magnetite, barite... ENDLESS CYCLE Amethyst, a purple variety of quartz, sometimes lines the cavities of geodes. Calcite...fine-grained that its individual minerals-such as quartz, feldspar, mica, and chlorite--cannot be seen without |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Institut fur Mineralogie der Universitat Wien, Austria. Michael Zolensky: Lyndon Johnson Space Center...and its significan (2) geographic and geologic occurrence, source or generation of the mineral, um with...honored. When the name is derived from the initial occurrence (the type locality), that locality will be shown...Especially when the mineral species is common, such as quartz (75.1.3.1), many varieties (jasper, onyx) are known...chemistry and structure are identical to those of quartz. 5D. Polytypes Materials whose basic structural |  | | Book (edition) | | Microcline and Smoky I'ala, ( ialiloniia. (Upper) Quartz, Crystal Peak, Colorado. (Lower) L HOW AND ...by nature's mill and sorted out by the water to quartz. make If the sand. a piece of granite is examined...are white or greater part of the sand grains, are quartz. though not so hard also hard, fragments, yellow...two smooth surfaces of or which show one as the quartz, but fracture; Then these are feklsjHir. there...those found in the was not made by nature alone. copper sulfate used. solution of crude rock salt, though |  | | Book (edition) | | have been deleted. In Chapter 7 the properties, occurrence, and uses of about described. Of the more ...are clear compar- to scratch glass: These are quartz There are also black grains which, because they... like the greater part of the sand grains, are quartz There are white, yellow, or pale flesh-red . grains...grains, also hard, but not as hard as quartz, smooth surfaces; these ar t feldspar Then which there...Another rock, quartzite, is composed of only quartz Because they . are made up of a single mineral |  | Rockwell, Barnaby W., Knepper, Daniel H., Horton, John D. (2015) Landsat maps (phase V, deliverable 60), ASTER maps (phase V, deliverable 62), ASTER_DEM maps (phase V, deliverable 63), and spectral remote sensing in support of PRISM-II mineral resource assessment project, Islamic Republic of Mauritania (phase V, deliverables 61 and 64): Chapter E in Second projet de renforcement institutionnel du secteur minier de la République Islamique de Mauritanie (PRISM-II). Open-File Report Vol. 2015 (2013-1280) US Geological Survey doi:10.3133/ofr20131280e | Report (issue) | | treatment. A = Bou Serouai / Guelb Hammar copper prospect. B = occurrence of mica and/or clay minerals within...shows the interpretation guide for this image. Quartz-sericite ± clay alteration in the Legleitat el...Khader upland. Note that the position of the copper occurrence “El Khader Breche” frpom PRISM-I at bottom...5 km west of the marked “Legleitat El Khader” occurrence ...............................................near zone of strong quartz-sericite alteration, Legleitat el Khader upland. Quartz increases in abundance | | | Report (issue) | | treatment. A = Bou Serouai / Guelb Hammar copper prospect. B = occurrence of mica and/or clay minerals within...shows the interpretation guide for this image. Quartz-sericite ± clay alteration in the Legleitat el...Khader upland. Note that the position of the copper occurrence “El Khader Breche” frpom PRISM-I at bottom...5 km west of the marked “Legleitat El Khader” occurrence ...............................................near zone of strong quartz-sericite alteration, Legleitat el Khader upland. Quartz increases in abundance |  | | Book | | a Mineral? 12 Streak 27 Composition 13 Occurrence and Localities 29 Characteristics IS Identification...Bismuth 67 Native Gold 63 Diamond 68 Native Copper 64 Graphite 69 Native Arsenic 66 Native Sulphur...Andradite 154 Quartz/Rock Crystal 174 Phenakite 155 Red Phantom Quartz 176 Rose Quartz 177 Smoky...Smoky Quartz 178 Amethyst 180 Agate 182 Chalcedony 184 Chrysoprase 185 Jasper 186 Contents ...gravity, luster, streak, and occurrence—are discussed in detail below. Quartz and Vyrite. IS Introduction |  | | Journal (article/letter/editorial) | | respectively, pyrite–quartz, polymetallic sulfide–quartz, and late–stage barren quartz veins. Systematic...Systematic studies of fluid inclusions (FIs) in the quartz veins found four types: aqueous, mixed aqueous– carbonic...metal precipitation resulted from a decrease in copper solubility during the fluid immiscibility, cooling...University, Shiraz, Iran Keywords Metamorphism . Copper mineralization . Fluid immiscibility . Ar geochronology...(Sarkarinejad and Azizi 2008) (Fig. 1). The Bavanat copper deposit, located on the eastern edge of the SSMB |  | | Book | | mixtures. Some minerals, such as quartz and feldspar, are widespread in occurrence. Others, such as platinum...REPRESENTATIVE MINERAL AGGREGATES A X 0.75 COPPER RHODOCHROSITE Dendritic Aggregate-branching,...important emerald locality is limited to a small district near Muzo in Colombia, South America. Minerals...to understanding mineral occurrence. Examples of such groupings are copper, lead, zinc; gold and silver;...silver; silver and lead; copper and gold; tin, tungsten, and molybdenum; iron and manganese; iron and titanium; |  | | Journal (article/letter/editorial) | | REMOTE SENSING: TARGET AREA GENERATION FOR PORPHYRY COPPER EXPLORATION IN THE NAMAQUA METAMORPHIC PROVINCE...aeromagnetic data for target area detection for porphyry copper exploration in the Namaqua Metamorphic Province...one location with a high potential for porphyry copper deposits, warranting detailed field verification...humankind as shown by their depletion and degradation. Copper is one such mineral resource which has been explored...explored and mined extensively in South Africa. The copper deposits exploration in South Africa has been studied |  | | Book (edition) | | and general physical characters, together with occurrence, associations, and uses, are included in this......................................... 270 OCCURRENCE Al\'D ASSOCIATION OF l\lV...the properties of the substance. For instance, in quartz the structural unit has been shown to consist of...or the indices of a face of a trapezohedron. Occurrence of Isometric Forms of the Hexoc tahedral Class...Figs. 111-116 and 120-123. Trigonal-Trapezohedral (Quartz) Class Symmetry - lAa, 3A2. The vertical crystallographic |
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