 | Lebedev, V. A., Chugaev, A. V., Vashakidze, G. T., Parfenov, A. V. (2016) Formation stages and ore matter sources of the Devdoraki copper deposit, Kazbek volcanic center, the Greater Caucasus. Geology of Ore Deposits, 58 (6) 465-484 doi:10.1134/s1075701516060040 | Journal (article/letter/editorial) |
| subeconomic disseminated and less abundant stringer pyrite mineralization formed at the first stage in the...could have been a main source of matter for early pyrite. At the second stage of base-metal mineralization...the source of ore matter was earlier metamorphic pyrite combined with hydrothermal solutions related to...suitable testing area for this sort of studies, as a region of intense uplifting, orogeny, coeval erosion,...and primarily composed of secondary chlorite, calcite, quartz, epidote, sericite, and zoisite. Among |
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| 947-G COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT ALASKA BY RALPH E. VAN ALSTINE AND ROBERT F....showing the location of the KotsinaKuskulana .district. _______-__________--_-_--______--_- 124 21...H. MOFFIT Copper was known in the Copper River region, which includes the Chitina Valley, from the days...different types and ages. The general geology of the region has been described elsewhere by the writer.1 Copper...1938. COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT, ALASKA By RALPH E. VAN ALSTINE AND ROBERT F |
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| I ♦ • ROCKBOUND'S . PARADISE I Bancroft and Region l Old Mines Quarries Outcrops Roadcuts '· Maps...The nephelin -rich gnei here are cut by several calcite-cored vein-dykes which are lined with crystal of...0-9697323-2-5 AROCKHOUND'S PARADISE - BANCROFT AND REGION Bancroft, Ontario is recognized throughout North...been known for its mines. The first mine in the region (Coe Hill) opened in the 1880s producing iron....hours of opportunities to explore the beauty of the region and gather many valuable specimens for their collections |
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| ountsof sphaleritewithin a kaolinite-pyrite-sphalerite(+ pyrite)-calciteparageneticsequence. The sph...that formedmuchlater. The/534S valuesof thislater pyrite, the sphalerite,andthe coalorganicmatterrangefrom...19 per mil. Within individual samples,however, pyrite, sphalerite,and organic mattersulfur/5•4S valuesare...similaritystronglysuggests relatedorigins.The/5a4S valuesof pyrite,sphalerite,andorganicmatterfromcoalsof the Illinoisbasin...Thisrangeisnot uniqueto the sphalerite-bearing coals;pyrite andorganicmatterfromsphalerite-free high sulfu |
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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 |
 | Zeng, Qingdong, Liu, Jianming, Liu, Tiebing, Shen, Yuanchao, Shen, Ping, Li, Guangming (2007) Geology and Geochemistry of the Buerkesidai and Kuoerzhenkuola Gold Deposits in the Sawuershan Region, Xinjiang Uigur Autonomous Region, Northwest China. Resource Geology, 57 (3) 313-324 doi:10.1111/j.1751-3928.2007.00025.x | Journal (article/letter/editorial) |
| Gold Deposits in the Sawuershan Region, Xinjiang Uigur Autonomous Region, Northwest China Qingdong Zeng...Sciences, Beijing, China Abstract The Sawuershan region, one of the important gold metallogenic belts of...gold-bearing quartz–pyrite veins and veinlet groups containing native gold, electrum, pyrite, pyrrhotite and...veinlet groups and altered rocks, with electrum, pyrite and arsenopyrite as major metallic minerals. Both...chlorite + calcite + quartz, with an inner pyrite–sericite zone and an outer chlorite– calcite–epidote zone |
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| of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...Mineralogical Society of Romania Geological Society of Slovakia, Mineralogical-Geochemical Branch Eötvös Loránd...(Romania) (Romania) (Austria) (Croatia) (Hungary) (Slovakia) (Greece) (Hungary) (USA) (Hungary) (Egypt) (Austria)...(Hungary) (Hungary) (Hungary) (Croatia) (Hungary) (Slovakia) (Serbia) (South Africa) (Austria) (France) (Hungary)...(Hungary) (Hungary) (Croatia) (UK) (Slovakia) (USA) (Austria) (Romania) (Slovakia) (China) (Germany) (Poland) |
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| *Correspondence: r.worden@liv.ac.uk Abstract: The occurrence and distribution of minerals in modern sedimentary...Detrital Fe minerals seem to be locally replaced by pyrite due to bacterial sulphate reduction, suggesting...glacial maximum (Bousher 1999). The west Cumbrian region has been affected by glaciation during the Quaternary...al. 1994). The carbonate cement is composed of calcite and dolomite with a minor amount of ferroan dolomite...consists of two main exposed outcrops in the region (the Lake District) including northern and southern outcrops |
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| OTIS SMITH, DIEECTOB GEOLOGY OF THE BERBERS BAY REGION ALASKA BY ADOLPH KNOPF WASHINGTON GOVERNMENT................................ Situation of the region........................................................................ General character and occurrence.................................. Petrography................................................. Pyrite..................................................................................^......... 30 Calcite............................................... |
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| Crystallization on Fractured and Polished Colloform Pyrite Surfaces: A Migration Pathway of Trace Elements...2019 Abstract: The colloform pyrite variety incorporates many trace elements that are...the environment during rapid oxidation. Colloform pyrite from the Chiprovtsi silver–lead deposit in Bulgaria...ablation inductively coupled plasma mass spectrometry. Pyrite is enriched with (in ppm): Co (0.1–964), Ni (1...minerals contain not only inherited elements from pyrite (Cr, Fe, Co, Ni, Cu, Zn, Ag, In, As, Sb, Hg, Tl |
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| ILLUSTRATIONS. Page. PLATE I. Topographic map of tin region, showing location of metalliferous prospects ___...Cassiterite lode; B, Surface exposure showing occurrence of fluorite silicate rock adjoining veinlets...tin in the York region by the Geological Survey in 1900 the tin deposits of this district have been discussed...that were incidental to other work, and as this district had attracted much notice as a possible source...time permitted, to determine the laws of their occurrence and origin. It was thought best to emphasize |
 | Foley, Nora K., Caddey, Stanton W., Byington, Craig B., Vardiman, David M. (1993) Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado. Professional Paper 1537. US Geological Survey doi:10.3133/pp1537 | Report (issue) |
| .............................................. Pyrite..................................................... Generalized geologic map of Creede mining district and vicinity ..................................... 33 Development of breccia cemented by pink calcite..................................................magnetite + hematite + pyrite + quartz. A younger crosscutting association contains calcite, adularia, fluorite...chlorite + quartz. Quartz, manganese-rich calcite, and trace pyrite line late-stage vugs. Mineralogic, lead-isotopic |
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| Arctic VolcanogenicMassive SulfideProspect,Ambler District, Alaska JEANINEM. SCHMIDT* Departmentof AppliedEarth... of alterationtypes,includingpyritic (pyrite-phengite-calcite) andchloritic(chlorite-quartz) alteration...andbarite, hasmoderateamountsof Zn andAg, and is low in pyrite, Fe, Pb, andAu. Ternaryplotsof Cu, Pb, andZn abundances...massivesulfidedeposits knownwithin the Ambler district,a 5,200-km2 area mum of 1.3 million metric tons...and thrust faulted in the south. An overview of district are describedbriefly below, followedby a discussion |
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| Mine Wahnapitei occurrences MacDonald occurrence Page occurrence Warren quarry Occurrences along Highway...occcurrence St. Leonard Lake occmTence Bass Lake occurrence McMillan Mine Wallace Mine Sheguiandah quarry...River Mine Havilland Beach occurrence Tribag Mine Mammoth-Vulcan occurrence Road-cuts, km 77 to km 98...(Roussainville) occurrence Copper Creek Mine Indian Diggings, Mineral Point occurrence Mamainse shoreline...shoreline occurrence Mamainse Mine "Daisy stone" occurrence Pointe aux Mines Mine Theano Point uranium occurrence |
 | Merinero, R., Ortega, L., Lunar, R., Piña, R., Cárdenes, V. (2019) Framboidal chalcopyrite and bornite constrain redox conditions during formation of their host rocks in the copper stratabound mineralization of Picachos, north-central Chile. Ore Geology Reviews, 112. 103037 doi:10.1016/j.oregeorev.2019.103037 | Journal (article/letter/editorial) |
| chloritization and sericite alteration; and (3) its occurrence in sequences of limestones that are intercalated...Project is the presence of pervasive AL framboidal pyrite in both the non-mineralized limestones and the...characteristics with framboidal pyrite, and are formed by the replacement of the original pyrite framboids, without...Representative size distributions of JO framboidal pyrite, chalcopyrite and bornite are determined using...preservation of the original framboidal texture of pyrite makes it possible to infer anoxic to near-dysoxic |
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| NATURE AND ORIGIN ST. LAWRENCE OF THE PYRITE AND JEFFERSON NEW YORK DEPOSITS OF COUNTIES,................................................. Pyrite deposits............................................................................. Mode of occurrence ...............................................336 $37 338 338 339 340 340 341 Structure of the pyrite veins ........................................................................... Origin of the pyrite deposits...................................... |
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| Resource Data File Pages Site: Unnamed Type: Occurrence ARDFno. AR002 Latitude: 67.3 Quadrangle: AR...Resource Data File Page 4 Site: Unnamed Type: Occurrence ARDFno. AR003 Latitude: 67.31 Quadrangle: AR...Resource Data File Pages Site: Hunt River Type: Occurrence ARDFno. AR004 Latitude: 67.33 Quadrangle: AR...Resource Data File Page 6 Site: Unnamed Type: Occurrence ARDFno. AR005 Latitude: 67.25 Quadrangle: AR...Resource Data File Page 9 Site: Jade Hills Type: Occurrence ARDFno. AR007 Latitude: 67.17 Quadrangle: ARA-4 |
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| irregular lenses lying conformably with host rocks. Pyrite, chalcopyrite, sphalerite, and fahlore are the...375 to 110°C. δ34S‰ ranges from –2.4 to +3.2‰ in pyrite, from –1.2 to +2.8‰ in chalcopyrite, and from –3...epidote and containing fine, nonuniformly distributed pyrite disseminations. Basaltic rocks are often affected...sericite–quartz metasomatic rocks. The volcanic rocks contain pyrite, chalcopyrite, sphalerite, and galena disseminations...sulfides increases from fine, nonuniformly distributed pyrite disseminations and sporadic small sphalerite–galena |
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| districts.____-_--_-----_____-______---_ Bohemia district.._i_-_-__--_---_-_--_---___-______-_____---_--...areas and mining districts Continued. Bohemia district Continued. Mineral deposits._________________...Veins of quartz and clay minerals_____.__-___._.-__ Pyrite and cherty quartz veins._____________________ Chalcopyrite...___--__-__. Gold-quartz and gold-calcite-quartz veins___________ Stibnite-pyrite-quartz veins_______________________..._-__--_----__------__-_____________ 48 Disseminated pyrite._-------__----___-____________ Zonal arrangement |
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| FREDERICK LESLIE RANSOME NOTES ON THE MANHATTAN DISTRICT G. H. GARREY AND W. H. EMMONS WASHINGTON GOVERNMENT..................................... Gold field district.................................................. 20 22 22 22 25 25 28 34 37 38 39 Bullfrog district.............. .............................................................. Situation of the district .................................................................... Mines of the Searchlight district...................................... Distribution |
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| ILLUSTRATIONS PLATE 11. Geologic map of Willow Creek district._______-_----__-__-_ 12. A, Chalcopyrite-molybdenite...mixed sulphides (the Eureka area in the Kantishna district, Mount Eielson, formerly known as Copper Mountain...of the nonmetalliferous resources of the entire region traversed by the railroad was included in the projects...become more favorable cannot be doubted. The entire region is becoming more accessible each year, and as a...LODE DISTRICT, ALASKA By JAMES C. KAY ABSTRACT The gold quartz veins of the Willow Creek district belong |
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| County Pyrophyllite, cacoxenite, diaspore, sericite, pyrite, ilmenite, topaz, and chert are found at the Snow...manganese deposit occurs in Alleghany County in the region south of Bald Knob. The minerals found in this...of Amelia. Molybdenite, malachite, sphalerite, pyrite, chalcopyrite, galena, anglesite, and cuprite can...actinolite, garnet, hornblende, siderite, chalcopyrite, pyrite, cuprite, native copper (in the biotite), arsenopyrite...and Spruce Pine. Epidote, chlorite, tremolite, calcite, thulite, azurite, malachite, albite, and green |
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| 4O7 GEOLOGY AND ORE DEPOSITS OF THE BULLFROG DISTRICT, NEVADA BY F. L. RANSOME, W. H. EMMONS AND G..................................... Marble and calcite schist.................................... Pegmatite...1............................................ Occurrence and distribution...............................2............................................ Occurrence and distribution.....................'.........basalt No. 1..................................... Occurrence and distribution............................ |
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| southwest end of the Harcuvar'Range Continued. . Calcite prospect.........................................economic geology of the principal ore deposits of .the region as was obtainable in the short time allotted. In...places to make travel over almost any part of the region possible, although in some places not at all convenient... The result is a crude topographic map of the district, with 500-foot contours. It is hoped that these...of the district, and whose conception of the general geologic conditions existing in this region, combined |
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| ................................... Bay Horse district.................................................CONTENTS. Mining districts Continued. Bay Horse district Continued. Mines and principal prospects Continued.................................... Yankee Fork district................................................. CONTENTS. 7 Mining districts Continued. Yankee Fork district Continued. Mines and principal prospects Continued.................................. 89 Loon Creek district.............................................. |
Pyrite occurrence, Veľká Poľana, Stakčín, Snina District, Prešov Region, Slovakia