 | 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...Kazbek volcanic center. Gangue mineral matter (quartz, carbonates) was supplied simultaneously from the...suitable testing area for this sort of studies, as a region of intense uplifting, orogeny, coeval erosion, |
 | Zhang, Chunguang, Wang, Jun, Feng, Mingshi, Shi, Zhiqiang, Xiang, Fang, Hou, Mingcai, Yang, Shuai, Kneller, Ben, Chen, Hongde (2021) Petrological Composition of the Last Coal Seam in the Longmendong Section before the End-Permian Mass Extinction. Minerals, 11 (11) 1230 doi:10.3390/min11111230 | Journal (article/letter/editorial) |
| include quartz, chamosite and pyrite. The pyrofusinite and carbon microparticles occurrence modes could...β-tridymite occurrence modes and the high proportions and occurrence modes of magmatic quartz indicate that...mire accumulation period. The chamosite and quartz occurrence modes suggest that they primarily precipitated...nearby Emeishan basalt. The pyritic coal balls occurrence modes in the C1 coal seam are likely the result...the Wangjiazhai Formation, Shuicheng Coal Mining District, Guizhou Province. The last appearance of coal |
 | 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...form of gold-bearing quartz veinlet groups and altered rocks, with electrum, pyrite and arsenopyrite as...assemblage is sericite + chlorite + calcite + quartz, with an inner pyrite–sericite zone and an outer chlorite– |
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| 947-G COPPER DEPOSITS OF THE KOTSINA-KUSKULANA DISTRICT ALASKA BY RALPH E. VAN ALSTINE AND ROBERT F.... - In pocket 32. Lens of chalcocite. granular quartz, and boTnite, Big Horn prospect.___________--_...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 |
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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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| 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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| I ♦ • ROCKBOUND'S . PARADISE I Bancroft and Region l Old Mines Quarries Outcrops Roadcuts '· Maps...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...the greens of amazonite; the whites and pinks of quartz and the purples of fluorite. There is also the |
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| U/Si ratio is twice as low as in coffinite. The occurrence of oxide pitchblende mineralization has been...situated in the central Transural region within the uranium district of the southwestern margin of the...the West Siberian Plate. This district encompasses infiltration uranium deposits with ore mineralization...shown that enrichment in uranium is caused by the occurrence of titanium minerals in host rocks. It is precisely...species proved unidentifiable due to their discrete occurrence (Khalezov, 2003). The aforementioned U–Ti mineralization |
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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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| his many courtesies. The locality lies in an arid region, best reached FIGURE 22. Index map showing position...Mountain, east of Alpine; and in the Defiance copper district, north of the Santa Margarita grant. The writer...few millimeters thick, associated with albite, quartz, stibiotantalite, and green and pink tourmalines...search being gem tourmaline. The country rock of the region is granitic and belongs to the group intermediate...granite and diorite. The specimens collected contain quartz, orthoclase, plagioclase, biotite, and hornblende |
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| OTIS SMITH, DIEECTOB GEOLOGY OF THE BERBERS BAY REGION ALASKA BY ADOLPH KNOPF WASHINGTON GOVERNMENT................................ Situation of the region......................................................... ; .................................... Quartz diorite gneiss......................................................... General character and occurrence.................................. Petrography................................................. Pyrite............................................... |
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| PROGRESS GEOLOGICAL RESURVEY OF THE CRIPPLE CREEK DISTRICT, COLORADO BY WALDEMAR LINDGREN AND FREDERICK.....^...... 11 First geological survey of the district ................................... Modifications............................. 32 Future of the district.................................................preliminary report on a "Resurvey of the Cripple Creek district of Colorado," by Messrs. Waldemar Lindgren and...elapsed since a careful study of the geology of this district was made by Messrs. Cross and Penrose, the' people |
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| Director , . A Bulletin 849 G THE GIRDWOOD DISTRICT, ALASKA BY C. F. PARK, JR. Investigations in...PLATE 33. Geologic map and sections of Girdwood district, Alaska. _ In pocket. FIGURE 1. Index map showing...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 |
 | Chen, Binghan, Deng, Jun, Wei, Hantao, Ji, Xingzhong (2019) Trace Element Geochemistry in Quartz in the Jinqingding Gold Deposit, Jiaodong Peninsula, China: Implications for the Gold Precipitation Mechanism. Minerals, 9 (5) 326 doi:10.3390/min9050326 | Journal (article/letter/editorial) |
| minerals Article Trace Element Geochemistry in Quartz in the Jinqingding Gold Deposit, Jiaodong Peninsula...on fluid inclusions within quartz. However, the trace elements in quartz reflect the properties of the...the trace element content in different types of quartz can reveal the precipitation mechanism. The Jinqingding...sulfide–quartz vein type orebody in the gold belt. This study distinguished four types of quartz in this...mineralogy and cathodoluminescence (CL) of the quartz and crosscutting relationships as seen under a |
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| *Correspondence: r.worden@liv.ac.uk Abstract: The occurrence and distribution of minerals in modern sedimentary...sandstones. The granite-supplied arm has slightly more quartz-rich and Fe mineral-poor sediment than the andesite-...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...dominated by major quantities (.10%) of detrital quartz, K-feldspar and albite and minor mica (between |
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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...malachite Gangue minerals: Geologic description: Quartz vein cuts limestone and contains malachite, azurite |
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| _ . ---------_----_-__---------___-_---_--.-_-.Quartz diorite__ ___---_-----___-__.---_-------------_-...Creek district._______-_----__-__-_ 12. A, Chalcopyrite-molybdenite stringer in normal quartz diorite;...diorite; B, Rhombic blocks produced by jointing in quartz diorite; C, Lucky Shot mine and camp and War Baby..._________ 26. Contact of dacite dike rock with quartz dioiite country rock in Lucky Shot mine--_____...mixed sulphides (the Eureka area in the Kantishna district, Mount Eielson, formerly known as Copper Mountain |
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| Earlier Tertiary (?) volcanic rocks and associated quartz monzonite bodies___--___-__-_-______________________-_______...-__-__--_--_--_--_--_-------_--_-_--_-_-_----Mount Baldy district. _______________ __________________________ Mineral...__________________________________________ Newton district.____-_--__-__-_-___.__.________..__.__________..._ 122: 123". 123 124124124 125125126- Henry district. -. ... ........................................Delano Peak No. 2 quadrangles in the Marysvale region, Utah. _______ 16. Outline map showing distribution |
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| SMITH, Director Bulletin 626 THE ATLANTIC GOLI) DISTRICT AND THE NORTH LARAMIE MOUNTAINS PAPERS BY ARTHUR.............................. The Atlantic gold district, Fremont County, Wyo............................the general region........................................... Geology of the Atlantic district............Magnetite schists in the northern part of the district.............. 16 Distribution and general character............................. North Laramie Peak district....................................... Location |
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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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| Contact metamorphisni ____...._________._.-.._ Quartz-augite porphyry dikes__..___...__._____ . _ .....limestone_________________ Cassiterite and wolframite quartz veins__________ JMetasomatic processes___________________...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...Polished surface of wall rock adjoining wolframite-quartz vein; B, Thin section of wall rock adjoining wolframite-quarts |
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| THE OCCURRENCE OF METALLIFEROUS DEPOSITS IN THE YUKON AND KUSKOKWIM REGIONS. By J. B. MERTIE, Jr. INTRODUCTION...and deductions regarding the distribution and occurrence of mineral deposits in interior Alaska. The paper...the Kuskokwim. Relatively little is known of the region north of Yukon River, but so far as known the geologic...Prindle, 1913. Bulletin 532. The Koyukuk-Chandalar region, Alaska, by A. G. Maddren, 1913. Bulletin 535....Chisana-White River district, Alaska, by S. R. Capps, 1915. Bulletin 631. The Yukon-Koyukuk region, Alaska, by |
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| 1908, which complete the preliminary work in this district. Should the mining interests continue to develop...far as possible the general laws governing the occurrence of the ore bodies. Incidental to this study,... facts were gathered bearing on the occurrence and extent of individual ore bodies, and many of these...however, that this statement of the geology of the region will be of great benefit to the mining interests...A. G., Mineral resources of the Kotsina-Chitina region : Bull. U. S. Geol. Survey No. 374, 1909, p. 51 |
 | Rečnik, Aleksander, Zavašnik, Janez, Jin, Lei, Čobić, Andrea, Daneu, Nina (2016) On the origin of 'iron-cross' twins of pyrite from Mt. Katarina, Slovenia. Mineralogical Magazine, 80 (6) 937-948 doi:10.1180/minmag.2016.080.073 | Journal (article/letter/editorial) |
| 937–948 On the origin of ‘iron-cross’ twins of pyrite from Mt. Katarina, Slovenia ALEKSANDER REČNIK1...Editor: Martin Lee] ABSTR ACT Iron-cross twins of pyrite are well known among mineralogists, however it...unexplored. To address this question we studied pyrite twins from the Upper Permian silts of Mt. Katarina...geological environments for twinned pyrite. Mineralization of pyrite starts with a reduction of the primary...magnetite crystallization is observed prior to pyrite crystallization, which indicates a gradual reduction |
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| County Pyrophyllite, cacoxenite, diaspore, sericite, pyrite, ilmenite, topaz, and chert are found at the Snow...year and may yield emerald, hiddenite, rutile, and quartz crystals. The following are mineral collecting...Alexander County: 1) Emerald, rutilated quartz, smoky quartz, and rose quartz, and hiddenite (uncommon) occur...of SR 1492. 2) Emerald, aquamarine beryl, rose quartz, and rutile occur at the Emerald Valley mine, which...located on the east side of the road. 3) Rutilated quartz occurs on the McCoury farm, approx imately 2 miles |
Pyrite occurrence, Veľká Poľana, Stakčín, Snina District, Prešov Region, Slovakia