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Gold (commodity) from
E.A.K., La Plata County, Colorado, USA


Locality type:Mine
Classification
Commodity:Gold (commodity)
Data
Commodity Data:Click here to view Gold (commodity) data
Locality Data:Click here to view E.A.K., La Plata County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1127719
Long-form Identifier:1:3:1127719:4
GUID (UUID V4):f83b2a5d-649c-4954-afaf-f6788f5dc3fa
Nearest other deposits of Gold (commodity)
0.0km (0.0 miles) ⓘValley View, La Plata County, Colorado, USA
0.0km (0.0 miles) ⓘSouthern Cross, La Plata County, Colorado, USA
5.9km (3.6 miles) ⓘWest Mancos River Placers, Montezuma County, Colorado, USA
7.2km (4.5 miles) ⓘUnknown Gold Prospect (MRDS - 10263890), Montezuma County, Colorado, USA
8.0km (4.9 miles) ⓘEast Mancos River Placers, East Mancos Mining District, Montezuma County, Colorado, USA
9.1km (5.7 miles) ⓘRed Arrow Extension, La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
10.1km (6.3 miles) ⓘCharlene Prospect (Twin Canyon; Unpatented Claim: Charlene), La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
10.3km (6.4 miles) ⓘCharlene Prospect (Twin Canyon), La Plata Mining District (California Mining District), La Plata County, Colorado, USA
10.7km (6.6 miles) ⓘRowena Tunnel, La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
10.7km (6.6 miles) ⓘBelle Placer (East Gulch Placer), La Plata Mining District (California Mining District), Montezuma County, Colorado, USA
Reference Search (possible matching items)
Journal (article/letter/editorial)
orientations are common to other mineralization, such as gold, banded iron formation (BIF), lead/zinc ores, tantalite...Conceptualization, E.E.O., E.A.K., K.D.O., B.O.O. and M.M.; methodology, E.A.K., K.D.O. and M.M.; software...O. and M.M; formal analysis, E.A.K.; field investigation, E.E.O., E.A.K. and B.O.O.; resources, O.O.... and M.M.; data curation, K.D.O. and E.A.K.; writing—original draft preparation, K.D.O. and E.E.O.; writing—review...supervision, B.O.O. and M.M.; project administration, E.A.K. and K.D.O.; funding acquisition, M.M. All authors
Journal (article/letter/editorial)
izbrodin@ginst.ru (I.A.I.); lena.khromova.00@mail.ru (E.A.K.) Correspondence: sharygin@igm.nsc.ru; Tel.: +7-383-330-80-84...Meteorite This iron meteorite was found summer 2016 by a gold prospector group during excavation works on river...compositions of the Uakit meteorite and kamacite (ICP-MS and LA-ICP-MS) indicate very low vanadium concentrations... Minerals 2020, 10, 150 15 of 19 kamacite (ICP-MS and LA-ICP-MS) indicate very low vanadium concentrations...G.S.R., I.A.I. and E.A.K. provided preliminary SEM studies. G.A.Y., V.I.G., E.A.K., N.S.K., I.A.I. and
Journal (article/letter/editorial)
“decratonic gold deposit” (Zhu et al., 2015; Cai et al., 2018). In contrast to the orogenic gold deposit...deposit, the decratonic gold deposit formed from magmatic hydrothermal solutions within extensional tectonic...tectonic setting (Zhu et al., 2015). In addition to gold, several other important mineral deposits, such as...stages: Precambrian and Mesozoic. The former included gold deposits and BIFrelated iron deposits associated...Santosh, 2014; Zhang et al., 2015; 2018). Whereas gold was the major mineralization in the western uplift
Journal (article/letter/editorial)
geochemistry, and genesis of the hot-springtype Sipingshan gold deposit, eastern Heilongjiang Province, Northeast...geochemistry, and genesis of the hot-spring-type Sipingshan gold deposit, eastern Heilongjiang Province, Northeast...geochemistry, and genesis of the hot-spring-type Sipingshan gold deposit, eastern Heilongjiang Province, Northeast...2015 (Accepted 3 September 2012) The Sipingshan gold deposit, located in the eastern part of the Nadanhada...Datashanlinchang Formation. The orebodies are composed of gold- and pyrite-bearing cherts, silicified breccias
Journal (article/letter/editorial)
Yangtze Block; Kangdian region; Yinachang deposit; LA-ICP-MS zircon U-Pb dating; zircon trace element analysis...have been recently classified as iron-oxide copper-gold (IOCG) type deposits (e.g. Li et al., 2002; Fang...ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) U-Pb zircon dating, and zircon REE analyses...Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) zircon age of 1659 ± 16 Ma (Zhao and Zhou...yields a LA-ICP-MS zircon U-Pb age of 1730 ± 15 Ma, and a dolerite dyke from the area has a LA-ICP-MS zircon
Journal (article/letter/editorial)
XENOLITHS FROM THE HATCHER MESA LAMPROITE, WYOMING, USA: INSIGHTS INTO THE COMPOSITION OF THE DEEP CRUST...Sommaire Les enclaves d’origine crustale entrainĂ©es dans la lamproĂŻte de Hatcher Mesa, Ă  Leucite Hills, au Wyoming...felsique. Les calculs gĂ©othermomĂ©triques fondĂ©s sur la composition des deux pyroxĂšnes indiquent une tempĂ©rature...pĂ©trographiques et la composition des roches et des minĂ©raux indiquent que ces enclaves ont rĂ©sultĂ© de la cristallisation...manteau au cours de l’ArchĂ©en; ces enclaves ont par la suite Ă©tĂ© affectĂ©es par un Ă©pisode de mĂ©tamorphisme
Journal (article/letter/editorial)
is part of the Western PaciïŹc porphyry–epithermal gold–copper metallogenic belt. Here, we present the results...highsulphidation epithermal gold deposit, located ~15 km NW of the large Xiaoxinancha gold-rich porphyry copper...high-sulphidation epithermal gold deposits to 108–106 Ma and the timing of formation of gold-rich porphyry copper...relationships between epithermal high-sulphidation gold and gold-rich porphyry copper systems and the evolution...highly productive for porphyry copper and epithermal gold mineralization (Hollings et al. 2005, 2011a, 2011b
Journal (article/letter/editorial)
interpreted by some works to reflect intrusionrelated gold systems (IRGS). Determining whether magmas can transport...magmatism; physico-chemical parameters; intrusion-related gold systems (IRGS) 2 1. Introduction The Abitibi...Neoarchean greenstone belt renowned for its gold endowment. Gold mineralization is generally related to hydrothermal...dominated by metamorphic fluids, referred to as orogenic gold deposits (Bateman et al., 2005; Gosselin and Dubé...fluid influx and correspond to intrusion-related gold systems (IRGS) (Fayol and Jébrak, 2017; Ispolatov
Journal (article/letter/editorial)
 Geochemistry and geochronology of porphyries gold–polymetallic orefield, western Yunnan, China from...Geochemistry and geochronology of porphyries from the Beiya gold–polymetallic oreïŹeld, western Yunnan, China, Ore...Zhihao Mao c, Yunman Zhou d, Hua IP Bo Liu T gold–polymetallic orefield, western Yunnan, China a...University of Geosciences, Beijing D c Yunnan Gold & Mineral Group Co., Ltd, Kunming 650224, China... ACCEPTED MANUSCRIPT Abstract The Beiya gold–polymetallic orefield, with gold reserves of 305 tons, is one of
Journal (article/letter/editorial)
advancement of investigation, porphyry–epithermal copper–gold metallogenic and dynamic models have been successively...et al., 2015). A spectrum of hydrothermal copper–gold metallic mineralization (Fig. 1b) occurs during...Yanbian area showing the locations of hydrothermal gold or copper deposits (modified from Chai et al., 2015;...minor bornite, tetrahedrite, chalcocite, native gold, electrum and molybdenite (Gu et al., 2016). In...10 km to the south of Baicaogou town, Wangqing County (Fig. 1b). At the current level of erosion (Fig
Journal (article/letter/editorial)
characterized by high light rare earth element contents [(La/Yb)N = 14.96–45.99]; negative Eu anomalies (ÎŽEu =...epoxy resin disc, and then polished and coated with gold film. Zircons were documented with transmitted and...Review NBS987 gave 87 Sr/86 Sr = 0.710246 ± 16(2σ ); La Jolla gave 143 Nd/144 Nd = 0.511863 ± 8 (2σ ). Pb...Zr Hf Nb Ta U Th Pb Sc Y La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu  REE (La/Yb)N SEu 99.2 30.7 14.6...O and Na2 O contents. The rocks have high LREEs [(La/Yb)N = 15.0–46.0], show negative Eu anomalies (ÎŽEu
Journal (article/letter/editorial)
InvestigaciĂłn CientĂ­fica y TecnolĂłgica (IPICYT), Camino a la Presa San JosĂ© 2055, San Luis PotosĂ­ 78216, Mexico...1994; Teixeira et al., 1996, 2015), and the Rio de la Plata Craton (Basei et al., 2000; Rapela et al., 2007;...al., 2010; Teixeira et al., 2017). The Rio de la Plata Craton is mainly located in ED Uruguay, and...basalt samples displayed LREEdepleted (La /Smcn=0.66–6.3) to enriched (La /Smcn=0.70–13.9) patterns, whereas...whereas the NU basalts showed flat LREE patterns (La /Smcn=1.13–2.00; Fig. 10). Both the komatiites MA
Journal (article/letter/editorial)
norms and the classification of volcanic rocks E.A.K. Middlemost (Sydney, N.S.W., Australia) ......................... 133 Platinum-group elements and gold in komatiitic rocks from the Agrilia Formation,
Journal (article/letter/editorial)
of Maryland , College Park , Maryland , 20742 , USA e No. 327 Geological Team, Anhui Bureau of Land...University of Maryland, College Park, Maryland 20742, USA; e No. 327 Geological Team, Anhui Bureau of Land...et al. 1991; Tang et al. 1998) (Figure 3). Zircon LA(inductively coupled plasma-mass spectrometry) ICP-MS...of biotite syenite and fine-grained granite. The LA-ICPMS zircon U-Pb dating reveals the formation age...emission spectrometry with detection precisions of La: 4.7%; Ce: 5.2%; Pr: 1.8%; Sm: 4.7%; Eu: 1.2%; Gd:
Journal (article/letter/editorial)
eastern Heilongjiang and Jilin Provinces based on La/Yb ratios of crust-derived I-type granites formed...the growth of continental crust and would have high La/Yb ratios from deeper levels (Profeta et al. 2015;...bole (stable at >~1.4 GPa) retaining Yb relative to La (Lieu and Stern 2019). Realistically, large porphyry...Heilongjiang and Jilin Provinces as a function of La/Yb ratios of exposed I-type granitoids, rather than...study area. Positive correla­ tions between Sr/Y and La/Yb ratios of intermediatefelsic intrusive rocks and
Journal (article/letter/editorial)
District, Beijing, 100083, China 3 Hubei Jilongshan Gold Mining Limited Company, Yangxin, Hubei, 435231,...rocks show enrichment in light rare earth elements ((La/Yb)N = 7.61–12.94) and large ion lithophile elements...ablation inductively coupled plasma spectrometry (LA-ICP-MS) zircon U–Pb age indicates that the granodiorite...Cu–Au deposit; whole-rock geochemistry; Zircon U–Pb LA-ICP-MS geochronology; Molybdenite Re–Os dating 1...the tectonic environment of ore formation based on LA-ICP-MS zircon U–Pb dating, molybdenite Re–Os geochronology
Journal (article/letter/editorial)
concentration NaOH 6700 FT-IRwas (Thermo Fisher Waltham, MA, USA)(8.3 spectrometer usingApotassium solution the same...aluminum, cromeritics Instruments, Norcross, GA, USA). SEM studies were performed using a LEO and magnesium...Oberkochen, Germany) microscope operated at 10 kV after gold coating the surface.Methods 2.5.fractured Characterization...K., E.V.K., A.G.I. and E.A.K.; investigation, A.M.K., E.V.K., A.G.I. and E.A.K.; writing—original draft...and editing, E.V.K., A.G.I. and E.A.K.; visualization, A.G.I. and E.A.K. All authors have read and agreed
Journal (article/letter/editorial)
ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) U–Pb zircon analysis yielded an age of 210...2003) programs. Errors on individual analyses by LA–ICP–MS are quoted at the 95% (1σ ) confidence level...level. 3. 3.3. Analytical methods 3.1. Zircon LA–ICP–MS U–Pb dating Zircon was separated from one of...then polished and coated with a conductive film of gold. Zircon grains were observed with transmitted and...gave 87 Sr/86 Sr = 0.710248 ± 12 (2σ , n = 10) and La Jolla gave 143 Nd/144 Nd = 0.511856 ± 10 (2σ , n
Journal (article/letter/editorial)
the Devonian Mafic and Acidic Dykes of the Jinba Gold Deposit, NW China: Petrogenesis and Tectonic Implications...the Devonian Mafic and Acidic Dykes of the Jinba Gold Deposit, NW China: Petrogenesis and Tectonic Implications...2022 Abstract: The Jinba deposit is an orogenic gold deposit located in the Markakuli shear zone, in...margin of Altay (which corresponds to the Jinba gold deposit) may have formed in an island arc-related...belt; geochemistry; zircon U–Pb; Hf isotopes; Jinba gold deposit Published: 9 July 2022 Publisher’s Note:
Journal (article/letter/editorial)
follows: NBS987 gave 87Sr/86Sr ÂŒ 0.710246 ^ 16(2s); La Jolla gave 143 Nd/144Nd ÂŒ 0.511863 ^ 8 (2s). Pb was...LOI Total TZr(8C) Sc V Cr Co Ni Ga Rb Sr Y Zr Nb Ba La Ce Pr Nd Sm Sample rock type 61.01 0.64 15.41 7...(2005). Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta Pb Th U (La/Yb)N Eu/Eu* Sample rock type Table 2 – continued...of shoshonitic lamprophyres in the Pengjiakuang gold district, Shandong Province, China: Geochimica (in...1990, Coesite from Mengzhong eclogite at Donghai county, northern Jiangsu province, China: Mineralogy Magazine
Journal (article/letter/editorial)
of the lamprophyre and the tectonic environment. LA-LCP-MS zircon U-Pb dating shows that the crystallization...and TiO2 , and that they are enriched with LREEs (La, Ce) and LILEs (Rb, Ba) and depleted with regard...deposit is located in Weishan Village, Weishan County, Zaozhuang City, Shandong Province. The deposit...resources are exposed in the Luxi Terrane, mainly REE, gold, iron and coal deposits [15,26–29]. Figure 1. (A)...instrument with uncertainties of less than 5%. 4.2. Zircon LA-ICP-MS U-Pb Dating Zircon separation was completed
Journal (article/letter/editorial)
88–2.97 ppm) contents, and has limited variations in La/Yb (8.6–20.5) and Dy/Yb (1.6–1.9) with increasing...50 ppm) contents, and shares limited variations in La/Yb (17.0–17.6) and Dy/Yb (1.5–1.7) with increasing...samples (FSL16-1, FSL164, and MH16-3) were performed by LA-ICP-MS U-Pb dating on zircons. Using conventional...nm) laser ablation system (J-200, Applied Spectra, USA) at the National Research Centre of Geoanalysis,...710258 ± 7 (2σ), and the 143Nd/144Nd ratios of the La Jolla and JNDI-1 Nd standard solutions were 0.511841
Journal (article/letter/editorial)
closure and Block. Wang et al. [24] obtained the LA-ICP-MS zircon U-Pb ages of rhyolites within the orogeny...suggesting that the Block. Wang et al. [24] obtained the LA-ICP-MS zircon U-Pb ages of rhyolites within the Jinshajiang...Geological Characteristics of Mining Area The Mojiang gold deposits are located in the middle section of the...Jiujia–Anding fault, which affects the occurrence of gold and nickel deposits. Folds and faults are relatively...specimens, and micrograph of the rhyolite in Mojiang gold deposits Figure 3. Field photos, hand specimens
Journal (article/letter/editorial)
minerals include zircon, titanite, and others. 4.2. LA-ICP-MS Zircon U–Pb Dating Zircons were selected from...ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) U–Pb isotopic analyses were conducted using...also calculated by Glitter software (ver. 4.4). The LA-ICP-MS U–Pb isotopic data are listed in Table S2...(LREE/HREE ratios ranging from 17.03 to 17.98 and (La/Yb)N values varying from 23.91 to 28.24 [73,74],...fractionation (LREE/HREE values of 6.95–9.88 and (La/Yb)N values of 7.39–12.12) with smaller negative
Journal (article/letter/editorial)
to obviously negative Eu anomalies (Fig. 4c). The (La/Yb)N ratio ranges from 7.5 to 25.5 and ÎŽEu values...and Y , and changing Sr anomalies (Fig. 4d). 3.2. LA-ICP-MS U-Pb zircon ages Eighteen zircons from the...results Eighteen Hf isotopic analyses were completed on LA-ICP-MS U-Pb dated zircons from the Matou porphyritic...Mao et al. (2003) proposed that three episodes of gold mineralization took place in the region during ca...at the world-class Climax Mo deposit in Colorado of the USA (Seedorff and Einaudi, 2004), and the Shapinggou
 
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