VIEWS: 57 PAGES: 5 POSTED ON: 12/23/2010
deposits USGS_classification description percieved_age_of_deposit type_of_deposit USGS_name Tectonic_setting alteration host_rock associated_deposits Mo-W-Be contact-metasomatic deposits 14a W-Be skarns Probably 35–25 Ma Mo-W-Be skarns and carbonate-hosted deposits surfical uranium deposits none none Miocene–Pliocene carbonatite 10 400–600 Ma, one about 22 Ma carbonatite alkaline intrusion REE-Th-U veins 10b thorium-rare-earth veins 400–600 Ma, 47–25 Ma thorium-rare-earth veins associated with alkaline intrusion Great Plains margin alkalic margin fluorite 47–25 Ma with alkaline intrusion IM11b fluorite veins associated pegmatite IM13h pegmatite, complex Ma, 1100–1200 ? Ma Proterozoic Probably 1450–1400 and/or zoned complex/zoned pegmatites Be pegmatite IM13a Be pegmatite Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma pegmatite, prodominantly Be Li pegmatite IM13b Li pegmatite Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma pegmatite, prodominantly lithium Nb-Ta pegmatite IM13c Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma Nb-Ta pegmatite pegmatite, prodominantly Nb-Ta feldspar pegmatite IM13e Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma feldspar pegmatite pegmatite, prodominantly feldspar mica pegmatite IM13f Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma mica pegmatite pegmatite, prodominantly mica quartz pegmatite IM13g Proterozoic Probably 1450–1400 Ma, 1100–1200 ? Ma quartz pegmatite pegmatite, prodominantly quartz 15a tungsten veins tungsten veins associated with granitic/rhyolitic rocks tungsten veins mid-Tertiary tin veins 15b mid-Tertiary tin veins tin veins associated with granitic/rhyolitic rocks tin greisen 15c mid-Tertiary tin greisen tin greisen associated with granitic/rhyolitic rocks porphyry copper 17 porphyry copper 75–50 Ma chalcopyrite-quartz stockwork veins in or near porphyrtic intrusion porphyry copper, skarnporphyry copper, skarn75–50 Ma 18a related related chalcopyrite-quartz stockwork veins in or near hydrothermally altered and mineralized porphy copper-lead-zinc skarn copper skarn 18b Oligocene–Pliocene chalcopyrite in calc-silicate metasomtic rocks near contacts with intrusions copper-lead-zinc skarn zinc-lead skarn 18c Oligocene–Pliocene sphalerite and galena in calc-silicate metasomtic rocks near contacts with intrusions replacement iron 18d Cretaceous–Miocene iron skarn iron in calc-silicate metasomtic rocks near contacts with intrusions 18f gold-bearing skarn gold in gold-bearing skarncalc-silicate metasomtic rocks near contacts with intrusions wollastonite18g skarn wollastonitewollastoniteOligocene–Pliocene skarn in calc-silicate metasomtic rocks near contacts with intrusions replacement polymetallic19a replacement polymetallicpolymetallic replacement in carbonate rokcs, without calc-silicate minerals polymetallicmanganese75–25 carbonate-hosted silver-manganese (Pb) replacmentMa replacement in carbonate rocks, without calc-silicate minerals 19a replacement and silver porphyry tin20a mid-Tertiary porphyry tindisseminated tin deposits in porphyritic rocks 20b tin veins mid-Tertiary tin-polymetallic veins tin-polymetallicpolymetallic veins stockwork 75–50 of porphyry copper-gold porphyry copper-gold veinletsMaquartz, chalcopyrite, bornite, and magnetite in or near a porphyritic intru 20c 25g epithermal Miocene–Pliocene epithermal manganeseepithermal manganesemanganese associated with volcanic epithermal systems 21a 75–50 porphyhy stockwork veinletsMa porphyhy copper-molybdenum copper-molybdenum of quartz, chalcopyrite, and molybdenite in or near a porphyritic intrusion. porphyry molybdenum, Probably quartz and porphyry molybdenum (tungsten) stockwork veinlets of35–25 Ma molybdenite in or near a porphyritic intrusion, with low fluori 21b low fluorine Great Plains margin gold-silver-telluride veins 22b 47–25 Ma veins associated with Tertiary alkaline intrusions Laramide vein22c polymetallicpolymetallic75–40 Ma veins skarns associated with Laramide (Late Cretaceous-mid-Tertiary) intrusions volcanic-epithermal 25e 35–16 epithermal quartz-alunite gold Ma or younger gold and pyrite in veins and breccias in highly acid-sulfate altered rocks volcanic-epithermal 36a gold-quartz veins Ma or younger low sulfide gold-quartz 35–16in shear zones in metamorphic rocks veins 24a Cyprus massive sulfide1650–1600 Ma volcanic massive sulfide stratabound lenses of massive pyrite, chalcopyrite, and sphalerite in pillow basalts of ophiolit volcanic-epithermal 25b Creede epithermal vein35–16 Ma or youngerin felsic- to intermediate-volcanic rocks gold-silver quartz-adularia veins volcanic-epithermal 25c Comstock epithermal vein 35–16 Ma or younger gold-silver quartz-adularia veins in felsic- to intermediate-volcanic rocks volcanic-epithermal 25d gold-silver 35–16 Ma or younger Sado epithermal vein quartz-adularia veins in felsic- to intermediate-volcanic rocks volcanogenic uranium volcanogenic uranium 35–16 Ma or younger volcanic rocks 25f fluorite veins, sandstone disseminated and vein uranium deposits associated with volcanic rocksuranium rhyolite-hosted tin 25h rhyolite-hosteddeposits Oligocene–Pliocene rhyolite tin tin in rhyolites other tin deposits perlite IM25ka perlite Oligocene–Pliocene perlite deposits associted with felsic volcanic centers pumice IM25kb pumice scoria-volcanicOligocene–Pliocene felsic volcanic centers cinders pumice deposits associted with scoria IM25kc scoria-volcanic cinders Oligocene–Pliocene mafic volcainic centers scoria deposits associated with hydrothermal bentonitehydrothermal bentoniteOligocene–Pliocene IM25la bentonite deposits associated with hydrothermal systems hydrothermal kaolin hydrothermal kaolin Oligocene–Pliocene hydrothermal systems IM25lb kaolin deposits associated with fumarolic sulfur 25m sulfur Oligocene–Pliocene fumarolic sulfur in geothermal systems 25oa open hydrologic system sedimentary zeolites sedimentary zeolites, in tuffs 25ob alkaline-lake deposits sedimentary zeolites sedimentary zeolites, in tuffs of saline, alkaline carbonate-hosted gold-silver 26a Oligocene–Pliocene fine-grained gold, carbonate-hosted gold-silver pyrite, and arsenic-antimony sulfides disseminated in calcareous and silice fluorite veins IM26b fluorite veins Oligocene–Pliocene fluorite veins in various rock types barite-fluorite veins IM26c barite and Oligocene–Pliocene barite-fluorite veins fluorite veins in various rock types Page 1 deposits barite-fluorite veins 27e vein barite barite veinsOligocene–Pliocene in various rock types IM28e sedimentary sedimentary bentonite sedimentary bentonite bentonite 30c sandstone uranium sandstone uranium Cretaceous, Eocene, Miocene Penn–Permian, Triassic, Jurassic, sedimentary-coppermargin oxidation sandstone, shale, other sedimentary rocks stratabound, sediment-hosted uranium deposits passive sandstone-hosted lead-zinc 30a sandstone-hosted lead-zincOligocene–Pliocene stratabound, disseminated galena and sphalerite in sedimentary beds, typically arenaceous 30b stratabound, Penn–Permian, Triassic bleaching sulfides in sedimentarypassive margin of red-bed sequenc sandstone uranium beds, typically sedimentary-copper sediment-hosted copper disseminated copper sedimentary rocks, predominantly sandstone IM30d dimension stone sandstonedimension stone dimension stone sandstone sandstone as a silica IM30e greater silica sandstone than 80% quartz sandstone IM31k sedimentary kaolin sedimentary kaolin sedimentary kaolin 32e solution collapse breccia pipe Jurassic, possibly collapse breccia pipe solution collapse breccia pipe uranium Triassic potash 35ab bedded potash deposits salt potash bearing-beddedPermian salt 35ac bedded evaporite Recent Permian, bedded salt, marinemarine salt deposits gypsum 35ae bedded gypsumsedimentary bedded gypsum deposits travertine IM35d Recent travertine spring and low temperature vein-filling travertine deposits fire clay IM38i fire clay residual fire clay deposits placer gold 39a Pliocene–Recent placer gold stream, alluvial, and residual placer gold deposits placer tin 39e stream Pliocene–Recent stream placer tin placer tin deposits Rio GrandeIM26b rift 12–8 Ma, maybe as young as little or fluorite veins ow temperature, open-space fillings with 700,000no replacement and are not obviously asso L Rio GrandeIM26c rift 12–8 Ma, maybe as young as little or Low temperature, open-space fillings with 700,000no replacement and are not obviously asso barite-fluorite veins Rio Grande27e rift 12–8 Ma, maybe as young as little or vein barite Low temperature, open-space fillings with 700,000no replacement and are not obviously asso 22c polymetallicvein veins Proterozoic to Tertiary Precambrian vein and replacements and replacement deposits are found along faults, fractures, shear zones, and contact zo 10b 47–25 veins thorium-rare-earth Ma associated with Tertiary alkaline intrusion Great Plains margin thorium-rare-earth veins Rio Grande19a rift 12–8 Ma, maybe as young as little or polymetallicLow temperature, open-space fillings with 700,000no replacement and are not obviously asso replacement none limestone uranium none Jurassic stratabound, uranoium deposit in limestone 39c beach-placer sandstone disseminated heavy mineral beach placer sandstone deposits shoreline titanium Cretaceous mill none none mill or other processing facility coal none none Cretaceous sedimentary coal deposits sedimentary none none deposit in sedimentary rocks, including crushed stone, aggregates, sand and gravel, clay geothermalnone none geothermal Oligocene–Pliocene well smelter none none smelter facility igneous none none Oligocene–Pliocene deposits in igneous rocks, including crushed and dimension stone, sedimentary iron 34f Cambrian–Ordovocian oolitic iron disseminated aand replacement iron deposits in sedimentary rocks 32a Oligocene–Pliocene stratabound carbonate-hosted deposits of sphalerite, galena, and chalcopyrite in sedimentar Mississippi-valley type Southeast Missouri lead-zinc carbonate-hosted Pb-Zn (Cu, Ag) replacment 75–25 Ma 19a replacement polymetalliclead and zinc replacement in carbonate rocks, without calc-silicate minerals polymetallic22c vein veins Ma polymetallicpolymetallic75–40 in various rocks veins 22c vein veins Miocene–Pliocene copper-silver (uranium)polymetallicVeins formed at low temperatures, near the surface, and along Tertiary faults, possibly as a carbonate-hosted manganese replacement Oligocene–Pliocene 19b manganese replacement in carbonate rocks, without calc-silicate minerals replacement manganese none none 1450–1400 Ma syenite/gabbro-hosted Cu-Ag-PGECu-Ag-PGE hosted by syenite and gabbro disseminated Y-Zr deposits in alkaline rocks 1100–1200 Ma in alkaline complexes 11c disseminated Y-Zr deposits Alkaline complex associated zircon placer tungsten none none Pliocene–Recent stream placer tungsten deposits volcanic massive sulfide 24b 1650–1600 Ma stratabound lenses of massive pyrite, chalcopyrite, and sphalerite in pillow basalts of ophiolit volcanic massive sulfide 28a 1650–1600 Ma stratabound lenses of massive pyrite, chalcopyrite, and sphalerite in pillow basalts of ophiolit 26b fluorite veinsein v Proterozoic to Tertiary Precambrian vein and replacements and replacement deposits are found along faults, fractures, shear zones, and contact zo REE-Th-U veins 11d 400–600 Ma, 47–25 Ma thorium-rare-earth veins associated with alkaline intrusion 18a Laramide skarn skarns associated with Laramide (Late Cretaceous-mid-Tertiary) intrusions polymetallic75-40 Ma 18c Laramide skarn polymetallic75-40 Ma zinc-lead skarn skarns associated with Laramide (Late Cretaceous-mid-Tertiary) intrusions 19a Laramide skarn replacement skarns associated with Laramide (Late Cretaceous-mid-Tertiary) intrusions polymetallicpolymetallic75-40 Ma Great Plains margin porphyry copper 17 47–25 Ma chalcopyrite-quartz stockwork veins in or near alkaline porphyrtic intrusion 22c veins 47–25 Ma Great Plains margin polymetallicpolymetallic, epithermal to mesothermal veins Great Plains margin 18a 47–25 Au Cu, Pb/Zn, and/or Ma skarns or carbonate-hosted replacement deposits 47–25 Au Great Plains margin copper skarn Pb/Zn, and/or Ma skarns or carbonate-hosted replacement deposits 18b Cu, 18d 47–25 Ma Great Plains margin iron skarn Fe skarns and replacement bodies Great Plains margin 39a 47–25 Au Cu, Pb/Zn, and/or Ma skarns or carbonate-hosted replacement deposits Page 2 deposits volcanic-epithermal 25g epithermal 35–16 Ma or younger epithermal manganesemanganese associated with volcanic epithermal systems volcanic-epithermal 26b 35–16 Ma to younger fluorite veins in felsic- or intermediate-volcanic rocks fluorite veins Mississippi-valley type 32b Oligocene–Pliocene stratabound carbonate-hosted deposits of sphalerite, galena, and chalcopyrite in sedimentar Mississippi-valley type 32c Oligocene–Pliocene stratabound carbonate-hosted deposits of sphalerite, galena, and chalcopyrite in sedimentar Mississippi-valley type 32d Oligocene–Pliocene stratabound carbonate-hosted deposits of sphalerite, galena, and chalcopyrite in sedimentar talc none none Proterozoic Lenticular masses of talc and talc-quartz-phyllite hosted by metamorphic rocks. alunite none none Oligocene–Pliocene clay none none sedimentary and volcanic clay deposits none crushed stone none crushed stone none dimension stone none dimension stone garnet none none garrnet deposits gems none none gems, semi-precious stones, and mineral collecting none limestone/dolostone none limestone, dolostone, travertine, marble for cement and lime zeolites none none sedimentary and volcanic zeolite deposits mica none none Proterozoic Precambrian mica schist schist Page 3 deposits Tectonic_setting c-silicate minerals ins, sandstone uranium Page 4 deposits passive margin passive margin aggregates, sand and gravel, clay Page 5
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