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| Vojany, Slovakia) Head of the Department of Natural History, Eastern Slovak Museum, Košice He finished...His Ph.D. study was at the Technical University, Košice (1992). Until 1990, he worked at the Dionýz Štúr...(1983). Ph.D. study at the Technical University, Košice (2000). Since 1980, he was employed in the Herman...Poland (Ewa Kos/.owska) Romania (Gheorghe Udubasa) Slovakia (Rudolf Duda) Ukraine (Orest Matkovs'ky) 31 31...(Ewa Kos/.owska). Romania (Gheorghe Udubasa), Slovakia (Rudolf Duda). Ukraine (Victor Kvasnytsya) 127 |
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| .......................................... 52 Slovakia ( Rudo lf Ducfa) ...............................(Ewa Koszowska). Ro mania (Gheorghe Uduba~a), Slovakia (Rudolf Ducfa). Ukraine (Victor Kvasnytsya) Native...wa especially rich in specimens from the Banal region and Gutiii Mts. (fu loppite was named in his honor)...detailed. unified mineralogical encyclopaedia of the region had been planned by the Commi!.sion on Mineralogy...Verde§ (Gold Museum. Brad) - for photography. Slovakia: Eva Sitasova (Eastern Slovak Museum. Kosice) |
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| Ceriopyrochlore Cerite Cerussite Chabazite-(Ca) Chalcedony Chalcocite Chalcomenite Chalcophanite Chalcopyrite...Zr)(Si2O7)2OF3 Hg2I2 Ag2Hg3 Pb (Zn,Cu)(OH)(VO4) chrom chalcedony Na3Ti3.6 Nb0.4(Si2O7)2O4·4(H2O) KAl2(Si3Al)O10(OH...Serendibite Serpentine, antigorite, chrysotile Siderite Siegenite Sillimanite Silver native Sinhalite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...mineral and siderite plus dolomite considered then as gangue minerals (Dill, 1985a). Siderite and dolomite |
| | Journal (article/letter/editorial) |
| Ceriopyrochlore Cerite Cerussite Chabazite-(Ca) Chalcedony Chalcocite Chalcomenite Chalcophanite Chalcopyrite...Zr)(Si2O7)2OF3 Hg2I2 Ag2Hg3 Pb (Zn,Cu)(OH)(VO4) chrom chalcedony Na3Ti3.6 Nb0.4(Si2O7)2O4·4(H2O) KAl2(Si3Al)O10(OH...Serendibite Serpentine, antigorite, chrysotile Siderite Siegenite Sillimanite Silver native Sinhalite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...mineral and siderite plus dolomite considered then as gangue minerals (Dill, 1985a). Siderite and dolomite |
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| later dacites and rhyolites --------Faulting of the region ......-........--...------....-.....-...-.-......---.----_---.... Description of the rocks of the region..................................... Distribution...andesite mineralization..--...---.--...-..--..... Occurrence of ores in the veins---.-......-.....----...... ILLUSTRATIONS. PLATE I. Geologic map of Tonopah mining district........................ FIG. 1. Plan of portion...sea level GEOLOGIC MAP 'OF TONOPAH MINING DISTRICT. NO. 219 White rhyolite Later dacite ( volcanic |
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| Zircon Xenotime Melilite group Si02 group Quartz Chalcedony Tridymite Chabazite Minerals with uniaxial negative...Trigonal carbonate group Calcite Dolomite Magnesite Siderite Corundum 2.1 2.2 2.3 2.4 2.4.1 2.4.2 2.4.3 2...Actinolite Anorthite Apatite Biotite Calcite Chalcedony Chlorite Clinopyroxene Cordierite Epidote Volcanic...skeletal forms and/or is altered to leucoxene. Occurrence: accessory mineral in most igneous rocks. It...clearly seen in altered than in fresh grains. Occurrence: it occurs together with magnetite as an accessory |
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| the earlier history, indeed the prehistory, of a region. Conglomerates speak of a time when high nearby...imperfect and prismatic. Fracture: uneven, brittle. SIDERITE gray-brown. Luster: nonmetallic, vitreous ...prismatic. Fracture: shell-like, uneven to poor. CHALCEDONY Luster: waxy. Hardness: 7. Cleavage: none. Fracture:...perfect cubic. shell-like, brittle. Fracture: CHALCEDONY Luster: waxy. Hardness: Cleavage: GYPSUM ... ZA aX Description of Minerals Actinolite Occurrence: Occurs generally in crystalline schists and |
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| its place of formation. A few minerals, such as chalcedony, have a special crystalline structure that does...differ- ent crystal structures; calcite (CaCO,) and siderite (FeCO,) have the same type of crystal structure...because they con- Figure 4. Chalcedony from the Faeroe Islands. Chalcedony is not crystalline in the normal...fine-grained mass. The rock illustrated is from a region near Oslo, Norway. Samples of it were brought to...first described) or after a landscape, county, or region in which the type locality was situated. Aragonite |
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| .......................................... The region of nearly stagnant waters........................the copper minerals.......................... Occurrence of the copper minerals.........................the silver minerals.......................... Occurrence of the silver minerals.........................compounds...................................... 135 Occurrence of the lead minerals...........................compounds...................................... 140 Occurrence of the zinc minerals........................ |
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| GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO BY W. S. BURBANK WITH A SECTION ON...Geography _ ______________ ___-__-__ Situation of the district _ _ _________________ Topographic features. ....Previous geologic and topographic work in the district. ____ ___________._-__-______--__. Field work..._________________. Southern part of district._____-______--_ Future exploration in the district.________---__._ Mines...mine_________________________ Mines of the southern part of the district-_______ Eagle mine.--____-------___________--_--__ |
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| .................................... Nicholia district.............................................................................. Spring Mountain district........................................................................................ Texas district.................................................districts of Lemhi County Continued. Page. Texas district Continued. Mines............................................................... 108 Blue Wing district.............:................................ |
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| GEOLOGY AND ORE DEPOSITS OF TILE LEADVILLE MINING DISTRICT, COLORADO BY S. F. EMMONS, J. D. IRVING, AND...fold-fault _ Faults in the eastern part of the district 95 62 Kokomo syncline_ Faults southeast_ of _..._ Leadville 62 the_ Fryer Hill folds _ 62 district _ 95 Warping and drag along normal faults, _ _ _ 96...169 151 Arsenopyrite _ In the oxidized zone_ 170 Siderite and manganosiderite_ 151 Arsenic minerals _ 171...Vivianite _ 171 Quartz _ Brown iron oxides _ 155 172 Chalcedony and opal _ 155 Jarosite and basic ferric sulphates_ |
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| 718 GEOLOGY AND ORE DEPOSITS OF THE ' CREEDE DISTRICT, COLORADO BY WILLIAM H. EMMONS AND ESPER S....14 15 15 15 16 17 17 18 General character and occurrence.................................. 18 Petrography...................... 32 General character and occurrence.................................. 32 Contacts...................... 45 General character and occurrence.................................. 45 Thickness......................... General character and occurrence.................................... Thickness |
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| additional occurrences of emerald, opal, agate, chalcedony, organic gems, tiger eye jasper, aragonite, cordierite... FRONTISPIECE Tiger iron from the Ord Ranges, Pilbara region, displaying folded bands of dark brown hematite...eye jasper from the Mount Brockman area, Pilbara region. The sphere, approximately 35 cm in diameter, contains.......................................... 34 Cue region...................................................................................... 34 Yalgoo region .............................................. |
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| ................................ 32 Marble Bar region ........................................................................................ 36 Cue region ..................................................................................... 36 Yalgoo region .................................................................................... 40 Menzies region ................................................................................. 40 Coolgardie region .............................................. |
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| Paper 172 GOLD QUARTZ VEINS OF THE ALLEGHANY DISTRICT CALIFORNIA BY HENRY G. FERGUSON AND ROGER W...Plagioclase ___________ Barite. ________-__--Chalcedony __________ Carbonate and sericite. Apatite. _..._______________ Rutile ____ _ ____ .._____.. Quartz, chalcedony, and opal Gold. ___________ _ ---____-_-__--_-_...Independence mine__-__-J__-----------Future of the district.... _____________ _^_ _______ Index, ___________'____________...ILLUSTRATIONS PLATE Fage 1. Geologic map of the Alleghany district, California._,.____-____-______-__-_______--_____-__-_--_-_-_- |
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| Mapping of Levoberezhnoye Au Deposit (Khabarovsk Region, Russia) . . . . . . . . I. Anisimov, A. Sagitova...Tin Minerals at Pravourmiysky Deposit (Khabarovsk Region) . . . . . . . . . . . . . . . . . . T. Chikisheva...Ag-Bearing Mineralization of Nevenrekan Deposit (Magadan Region, Russia) . . . . . . . . . . . . . . . . . . ....other VMS deposits occur in north eastern Pontide region, Kuroko deposits of Japan and also comparable modern...massive sulphide deposits in the eastern black sea region (NE Turkey). Bull MTA 147:73–89 Yigit O (2005) |
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| Professional Paper 177 THE GOLD HILL MINING DISTRICT U'TAH BY T. B. NOLAN UNItED STATES GOVERNMI£NT...______ ___ ___ ___ _ __ ____ ___ ______ Clifton district _ _ __ History of mining and production__ ___...119 II Mines and prospects-Continued. Clifton district-Continued. Mines and prospects-Continued. Veins...Evans__________ _________________ Willow Springs district. ____ __ _ __ ___ _ ____ ___ History and production_________...the ranges in the Great Basin. The climate of the region, like that of the major province, is relatively |
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| The Spinel Group 141 142 Calcite Magnesite 144 Siderite 145 Rhodochrosite 146 Dolomite-Ankerite 147 Aragonite... Tectosilicates Sílica group 261 261 261 Chalcedony 262 Tridymite 264 265 Cristo bali te 266 Opal...Fe-Ti oxides SEDIMENTARY ROCKS Clastic quartz chalcedony K-feldspar plagioclase clay calcite muscovite...dolomite gypsum anhydrite halite sylvite sulfur chalcedony clastic material (see also Table 10.2) Tactics...Extreme relief and birefringence and limited occurrence are characteristic. 119 120 INTRODUCTION |
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| __________________________ 288 Lab Notes A new chalcedony treatment • DiamondView indicates treatment in...strong indicator of HPHT treatment. Concerning the occurrence of the “cage” effect in natural (untreated) diamonds...Kashmir (in what is now the Indian part of the region) in 1881 after a landslide revealed the blue gems...(Atkinson and Kothavala, 1983). Although the Kashmir district has been at the center of a hostile border dispute...remoteness of the deposit and military activity in the region. Myanmar. Burma (known as Myanmar since 1989) has |
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| districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-_--_---___-______-_____---_--...areas and mining districts Continued. Bohemia district Continued. Mineral deposits._________________...areas and mining districts Continued. Bohemia district Continued. Mines and prospects Continued. Tall...___-_-___.-______-_-_____.__________._ Quartzville district..______-_----._______-_____-.-________-_-Location...areas and mining districts Continued. Quartzville district Continued. Mines and prospects Continued. Lawler |
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| fund of information on the subject of agates, chalcedony, and petrified woods, and these chapters were...uartz xiii . . . 13o Contents Agate —Chalcedony Chapter X 157 Chapter XI Geodes and Thunder...Agate-filled Nodule 224 Coral Petrified by Chalcedony 229 Phantom-quartz Crystal 236 Etched-quartz...Old Dexter stamp first of its kind in the Butte district. From then on, his mining properties expanded...find contradictions even in the same text an occurrence which, under existing conditions, cannot well |
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| any of the actual or potential conflicts in the region—not in Iraq, not between Israel and her neighbors... For too long, the prevailing mentality in the region has been that the weak cannot afford to give up...battle between good and evil will take place in that region. This isn’t a point I am inclined to argue, but...require that the forces of moderation throughout the region do more to support each other, so that extremists...mastering the market. Looked at The New York diamond district has long been the center of diamond distribution |
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| INTRODUCTION. reports are those on the Mercur district, by J. E. Spurr and S. F. Emmons; the Bingham...Bingham The senior author, J3. S. Butler, began district, by J. M. Boutwell, Arthur Keith, and field work on...deposits of Utah in the S. F. Emmons; the Park City district, by J. M. FIELD .WORK AND AUTHORSHIP. summer...the Plateau region. The junior author, G. F. Loughlin, began work in the Tintic district in 1911 in collaboration...the Tin tic and Thomas ranges, of the Leamington district, and of districts in theW asatch Range. Several |
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| and current status of the world’s only known occurrence of gem-quality red beryl. pg. 299 REGULAR FEATURES...presents an update on the only known commercial occurrence of gem-quality red beryl in the world: the Ruby...temperature conditions initially in the graphite-stable region (similar to those commonly used in HPHT treatment;...temperature and pressure in the “diamond-stable region,” there was still no improvement in its color (figure...(right) after HPHT annealing in the graphite-stable region. The sample broke into two pieces after treatment |
