 | | Book (edition) | | SIMPLE CRYSTALLINE FORMS MINERALS *or trigonal copper trisocta- silver hedron trisocta- gold platinum...crystal structures characterized by a metallic bond {copper), covalent bond (diamond) and ionic bond (fluorite)..."scepter'-like association), barite, calcite and copper; among those of individuals of different species...those which can be scored with a piece of copper wire or a copper coin are called soft (hardness of 2-3)...iron and also certain iron-bearing silicates (biotite, hornblende, black tourmaline, etc.) can be magnetized |  | | Journal (article/letter/editorial) | | Pleistocene, Argentina, south (Fleck, R. J., etal.) 16 1 15 Basalt, K/Ar, South-West Africa (Siedner, G...Faial, Azores, Trindade (Oversby, V.M.) 11 5 401 Biotite, hornblende, gneisses, K/Ar, Ar/Ar, Sr/Rb, Arctic...Greenland (Pankhurst, R. J., et al.) 20 2 157 Biotite, igneous rocks, volcanic, ash flows, tuff, K/Ar...) 21 2 213 Biotite, K/Ar, argon, excess, Canada (Wanless, R. K., et al.) 7 2 167 Biotite, K/Ar, Sr/Rb...Montana, southwest (Giletti, Bruno J.) 10 2 157 Biotite, quartz, feldspar, muscovite, quartz diorite, whole |  | 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...Ma. The porphyries are mainly of biotite monzogranitic and biotite syenogranitic compositions. Geological...Hydrothermal alteration at Yulong developed around a biotite±monzogranitic porphyry stock that was emplaced... 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 |  | | Conference Proceedings (Volume) | | org Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations...million tonnes of ore containing 67 100 tonnes of copper, 51 700 tonnes of silver and 1,9 tonnes of gold...interpretive bedrock mapping in the Giyani area (South Africa) .. ......................................Zn-Pb-Cu-(Au-Ag) sulphide deposit, Bergslagen region, south-central Sweden . . ...............................Basement Complex: a new Palaeoproterozoic VMS occurrence in the northern Fennoscandian Shield ....... |  | | Book (edition) | | Utah; (lower /eft) rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite, Red Cloud...England Thomas Nelson Australia 102 Dodds Street South Melbourne, Victoria 3205, Australia Nelson Canada...whose abundance is measured in potentially of occurrence the to alert ly teur mineralogists have become...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 | | | Book (edition) | | England Thomas Nelson Australia 102 Dodds Street South Melbourne, Victoria 3205, Australia Nelson Canada...mineralogists have become increasingly alert to the occurrence of potentially new species. The purpose of this...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...manganese and iron oxides found on ocean bottoms. occurrence The physical and genetic origin of a mineral; |  | | Book (edition) | | Cleavage Optics Spectral Inclusions Luminescence Occurrence Stone Sizes Comments XlX XIX XlX XX XX XX XXl...basic rocks. The conditions necessary for the occurrence of emerald, i.e. , the formation of beryl plus...deposits); demands of the market. A gemstone occurrence is a very rare and transient geologic feature...contains plagioclase feldspar, little quartz, some biotite. Granodiorite- like diorite, but richer in potassium... well-formed crystals. An example of such an occurrence is the mineral brazilianite, which was described |  | | Book | | soil or stream-sediment geochemical anomaly for copper and molybdenum leads to another major discovery...dispersion of transported zinc. These two modes of occurrence should be chemically separable. Comparing total...postulated that the core of the system, rich in copper and molybdenum, is in the vicinity of Tio Flaco...welldefined but buried chalcocite blanket on a porphyry copper deposit in Arizona has been analysed in detail...examine the leached cappings over some porphyry copper deposits in northwestern Mexico. In the bulk analyses |  | | Book (edition) | | common and which have practical usage. Here belong biotite (with end-members annitephlogopite), lepidolite...among the most important rockforming minerals (eg: biotite. olivine), or among the important economic ore...common are malleable (e.g gold). ductile (e.g. copper). sectile (e.g. chalcocite). elastic Optical co11sta11ts...expressed in abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture)...the revolution in 1997. Its mineral rich Katanga province was renamed Shaba by Mobutu, and is now the Katanga |  | | 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...crystals, specific gravity, luster, streak, and occurrence—are discussed in detail below. Quartz and Vyrite...usually produces brown, yellow, or red hues, whereas copper may turn rocks and minerals a blue or green color...6+ Cassiterite 6.6-7.0+ Galena 7.5+ Native Copper 9.0 Native Gold 19.3 5-7 7-10 Very heavy |  | | Book (volume) | | Tenorite 110. 104. Ores Native Lead 101. Copper-pyrites Copper-vitriol Mercury mine 46 crystals 101... Cuprite 107. 100. Copper-glance Govellite 103. 96 Copper Ores 96. copper Franklinite .... Substances...Substances Native 40 different Crystals and Copper Arsenic The Optical 92. Argyro- 94. Native... Silver 8. Gold-ores Gold Sylvanite, and Copper. Silver-ores Nagyagite, 28. I. Argentite,...Native 11. Copper-ores Copper. I. Copper-glance, Covellite, Copper-pyrites, Copper-ores II. Bornite |  | | Journal (issue) | | currency, without surcharge, to the following people: South Africa: Horst Windisch 30 Van Wouw Street Groenkloof...thumbnail stock; locations— Bolivia, Colorado, Europe, South Africa. MINERALS FACETTED STONES ESTWING TOOLS...NORTH OF THE OHIO TURNPIKE (EXIT 16) AND 20 MINUTES SOUTH FROM I-76 & 80. IF YOU PASS THROUGH YOUNGSTOWN GOING...CoLfzzf R ea p k e via Cavour 193, 00184 Rome, Italy 132 So. York Road Hatboro, PA 19040 2 1 5 -4 4...n th ly Lists JOHN J. M ETTEER 32866 46th Place South A uburn, Washington 98002 m offers some of the |  | 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) | | Short Hills, New Jersey. Renato Pagano: Milan, Italy. Ole V. Petersen: Geologisk Museum, Copenhagen,...Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...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...to opaque materials imperfectly metallic Gold, copper, tin The luster of diamond, other materials of |  | Edfelt, Åsa, Armstrong, Robin N., Smith, Martin, Martinsson, Olof (2005) Alteration paragenesis and mineral chemistry of the Tjårrojåkka apatite–iron and Cu (-Au) occurrences, Kiruna area, northern Sweden. Mineralium Deposita, 40 (4) 409-434 doi:10.1007/s00126-005-0005-y | Journal (article/letter/editorial) | | possibly genetically, related apatite–iron and copper–gold deposits in the region is at Tjårrojåkka...ore of Kiruna-type and the Tjårrojåkka copper occurrence shows the same characteristics as most other...albite alteration and copper mineralisation. The Tjårrojåkka iron and copper deposits show comparable...(apatite, scapolite, feldspars, amphiboles, and biotite) indicate a higher salinity and Ba/K ratio in the...UK alterations in the apatite–iron occurrence than in the copper deposit, where the minerals are enriched |  | | 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...gold. The economic value of this metallogenic province is not yet fully established. Introduction In...Vertiskos Mountains, c) in the Krousia Mountains South of the Bulgarian and Jugoslavian frontier. With...occur, i.e. pigeonite-hornblende-biotite diorite and hornblende-biotite diorite porphyries. Towards the |  | | Journal (article/letter/editorial) | | GENERATION FOR PORPHYRY COPPER EXPLORATION IN THE NAMAQUA METAMORPHIC PROVINCE, SOUTH AFRICA L. NGCOFE Council...Geoscience, PO Box 572, Bellville, 7535, Cape Town, South Africa e-mail: Lngcofe@geoscience.org.za H. MINNAAR...Geoscience, PO Box 775, Upington, 8801, Northern Cape, South Africa e-mail: Hminnaar@geoscience.org.za K. HALENYANE...Geoscience, PO Box 572, Bellville 7535, Cape Town, South Africa e-mail: Khalenyane@geoscience.org.za; Lc...e.org.za © 2013 December Geological Society of South Africa ABSTRACT This research focuses on the application |  | | Journal (article/letter/editorial) | | Caldera (plus an additional area of 10 ⫻ 20 km to the south) is underlain by a large, cogenetic batholith at...(29 to 38 vol.%), minor plagioclase (⬍1 vol.%), biotite (0.5 to 1.6 vol.%), and muscovite (0 to 1 vol.%)...minerals (Fig. 2). Small grains of magnetite and biotite are the only mafic minerals present. Melt inclusions...inclusions comprise alkali feldspar, magnetite, biotite, apatite, and probably thorite. Primary fluid inclusions...precipitation of large amounts of alkali feldspar (⫾biotite, apatite, and probably thorite). Fluid inclusion |  | | Report (issue) | | The Hila Prospect: A Recently Discovered Copper Occurrence on Ambon Island, Republic of Indonesia by... The Hila Prospect: A Recently Discovered Copper Occurrence on Ambon Island, Republic of Indonesia by...Prospect, near Hila village on Ambon Island, contains copper sulfide minerals in 4.4 Ma Ambon volcanic rocks...dacites, breccia and tuff locally intruded by biotite and biotite-cordierite granite. Pyrite- and chalcopyritebearing...the periphery of a porphyry copper-gold deposit. Introduction Anomalous copper and gold values have been |  | | Report (volume) | | is of the nickeliferous iron type; the mode of occurrence of nickel in these deposits has not been determined...summary.] Aleshkov, A. N., 1941, On the origin of the south Uralian deposits of nickel: Acad. Sci. U. R. S....AUsman, P. T., 1938, Cost of mining 55 tons of copper-nickel ore at the Great Eastern prospect, Bunkerville...8-9, 13-16. Argall, P. B., 1895, Nickel; the occurrence, geologic distribution, a11d genesis of its ore..., Alger 1952, p. 223. Aubury, L. E., 1950, The copper resources of California: California State Mining |  | | 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...granite as a rule, though its texture and its occurrence are similar. Like granite, diorite is a group...largely altered to serpentine, called kimberlite in South Africa. It is the matrix of diamonds, the rock...late low-temperature minerals. The manner of occurrence is noted in the paragraph Environment in each |  | | Book | | such as quartz and feldspar, are widespread in occurrence. Others, such as platinum and diamond, are limited...REPRESENTATIVE MINERAL AGGREGATES A X 0.75 COPPER RHODOCHROSITE Dendritic Aggregate-branching,...limited to a small district near Muzo in Colombia, South America. Minerals containing specific groups of...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; |  | | Book (edition) | | and general physical characters, together with occurrence, associations, and uses, are included in this......................................... 270 OCCURRENCE Al\'D ASSOCIATION OF l\lV...or the indices of a face of a trapezohedron. Occurrence of Isometric Forms of the Hexoc tahedral Class...hardness of the finger nail is a little over 2, a copper coin about 3, the steel of a. pocket kniie a little...I1e a Ite 1p t Xnffe 5 Fluorite 4 Calcite Co,o Copper 8 Gupsum Finger Nall 2 c Tal 9.0 1 .0 Flo. 241 |  | | Book (edition) | | Permissions, Houghton Mifflin Company, 215 Park Avenue South, New York, New York 10003 PETERSON FIELD GUIDES...Museum, Stefano Merlini of the University of Pisa, Italy, and Father J. W. Skehan of Boston College. For...seldom present, with a consequent infrequency of occurrence) tend to form smaller crystals. Common minerals...rhyolite. Several of today's low-grade Western copper pits were once rhyolite mountains. In the East...features (Stone Mountain, Georgia; Mt. Rushmore, South Dakota). Monumental and building stone quarries |  | | Report (issue) | | eo a ) eae Gold and Silver eae Cashel Copper Occurrence. 23 some esc : i Saute Sos : 7 Sh...Utilization.......... Origin Madoc Tale and Mining Occurrence... Marble.... Grenville Marble Company Limited...Zinc, and Copper. Index. 16 : Rusty-Weathering Schists. B. F. Maidens Gunter Occurrence Marl. 15...Weslemkoon batholith. . . 5—Hornblende-garnet-biotite- plagio’ lase-quartz porphyroblasts. .. . gneiss...6—Quartzo-feldspathic gneiss layers separated by biotite-rich’schist.<.....0.: sees 7—Porphyroblastic eer |  | | Journal (article/letter/editorial) | | hydrothermal events in the Chuquicamata porphyry copper system, Chile Peter Reynolds ) , Casey Ravenhurst...there was very rapid cooling through feldspar and biotite closure temperatures, especially if these minerals...substantially higher than the ones normally assumed for biotite Ži.e. about 3008C., they andror the calculated...Abstract., Society of Economic Geologists Symposium ‘Copper deposits of the Andes, New Developments’. Concepcion...Keywords: ArrAr dates; Porphyry copper; Alteration; K-feldspar; Sericite; Biotite 1. Introduction ) Corresponding |
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