• Copper Canyon Skarn Deposits (MRDS #10310303) AU, AG, CU

    The West ore body was in a garnet skarn surrounded by an envelope of diopside, tremolite-actinolite, and biotite, north of and adjacent to granodiorite contact in Copper Canyon. Total sulfide content (mainly pyrite and pyrrhotite) increased to as much as 75% by volume toward granodiorite contact, with chalcopyrite important closer to the contact.

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  • Photos of Natural Silver Ore, Silver minerals, Crystal ...

    Gold and silver are obtained from a variety of ores, in some of which the gold predominates, in others silver is the primary value, while in still a third class these two metals may be mixed with the base metals, such as lead, copper, zinc, and iron.

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  • The copper polymetallic deposits and resource potential in ...

     · The controlled copper of the Duolong ore district in the Bangong Co-Nujiang metallogenic belt is more than 20×10 6 t, controlled associated gold and silver are more than 400 t and 5000 t, and the prospective copper, gold, and silver could be 30×10 6 t, 1000 t …

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  • Montana Gold

    The ores are dominantly gold with some silver, lead and copper and generally found along the contact between the limestone and granodiorite, or in stringers or small fissures. Large amounts of garnet, with some epidote, are also along the contact.

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  • Hydrothermal mineral deposit

    Hydrothermal mineral deposits are accumulations of valuable minerals which formed from hot waters circulating in Earth''s crust through fractures. They eventually create rich-metallic fluids concentrated in a selected volume of rock, which become supersaturated and then precipitate ore minerals some occurrences, minerals can be extracted at a profit by mining.

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  • Wyoming State Geological Survey

    Copper was discovered in 1900 at a depth of 65 feet, and platinum within the covellite ore was discovered in 1901. Estimated production from the New Rambler mine totaled 171.3 ounces of gold, 7,346 ounces of silver, 1,753,924 pounds of copper, 910 ounces of …

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  • Silver mining

    Silver-bearing ore typically contains very little silver, with much higher percentages of copper and lead. As such, most silver produced is refined from sulfide ores such as galena (lead) or chalcopyrite (copper) which contain small amounts of silver. Many of these ores are mined for their value as sulfide ores, and silver is extracted as a valuable by-product, however, some ores are mined ...

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  • Cerro Verde-Santa Rosa Copper-Molybdenum Deposits, Peru ...

     · The copper grades into a zone of 0.4 to 0.2% Cu within the biotitealtered zone at depth. Two discrete molybdenum ore shells are contained within the copper ore shell and are located proximal to the granodiorite stocks. The highest abundance of molybdenite is inward toward the stock and is zoned outward to lower grades.

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  • Where to Find Silver, Lead, Zinc Deposits Canada

     · Where to Find Silver in Yukon. The great granodiorite batholith extends northward into the Yukon, and, as was expected, ore deposits have been found around its edges in that territory. In the Keno Hill area are two systems of fissure veins of quartz, mineralized with mispickel, galena, zinc blende, manganese, and a silver mineral not identified.

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  • Epithermal Gold for Explorationists | AIG Journal

    Copper may occur as chalcopyrite in systems formed at deeper crustal levels, and anomalous bismuth is common (e.g., Mineral Hill, Photo 5), while some galena and sphalerite may occur at higher levels (e.g. Kidston) transitional to carbonate-base metal gold or polymetallic gold-silver deposits.

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  • WA

    ore assayed 240 ozs. silver and 0.5 oz. gold per ton. Ore minerals: h''rargyrite, galena, sphaler— iter and pyrite. Production: Minor production in 1896. Reference: Huntting, 1956, p. 298. Giant Location: sec. 22, T. 23 N., R. 12 E. Development: 500—foot adit with short drifts and a 100—foot adit with a winze. to metallized shear zones in ...

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  • Ore Deposits, Kentucky Geological Survey, University of ...

     · The Central Kentucky Mineral District, commonly known as the Central Kentucky Fluorspar District, covers part or all of the 16 counties in the Bluegrass Region of central Kentucky and consists of more than 200 vertically dipping vein deposits. Barite, fluorite, calcite, galena, and sphalerite have been sporadically mined in this district since ...

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  • Mineralogical expression of silver in copper sulfides of ...

     · Stromeyerite is the only silver mineral with silver as a major component recognized in the copper ore of the Tagmout deposit. The presence of stromeyerite in the Anti-Atlas was previously indicated by Permingeat ( 1991 ) at Bou Azzer, and recently by Oummouch et al. ( 2017 ) at the Ighrem deposit in the Western Anti-Atlas.

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  • Silver ores

    Silver ores. The most common silver-bearing minerals recovered by flotation are argentiferous galena, native silver, argentite (Ag2S) and tetrahedrite (Cu,Fe,Ag) Sb4S3). Often these minerals float with the base metals such as copper and lead sulphides or are the primary target mineral (tetrahedrite). Aryl (cresylic or phenyl based) and alkyl ...

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  • List Antimony Minerals Group

     · Tetrahedrite or Gray Copper Ore. Part of the list of all Antimony Minerals Group is Cu2Sb8S7. — Color, grayish or grayish black; powder, grayish or grayish black, sometimes inclining to brown or reddish; luster, metallic; H = 3 to 4; G=4.4 to 5.1; no cleavage; composition, about 52% copper, and, in addition to the antimony and sulphur, sometimes mercury or silver, also zinc and iron ...

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  • Major Mines & Projects | IMMSA Mine

    Economic ore is found as replacement sulfurs in carbonates host rock. The ore mineralogy is comprised predominantly of calcopyrite (CuFeS ), sphalerite (ZnS), galena (PbS) and silver minerals as diaphorite (Pb Ag Sb S). San Martin lies in the Central Mesa between two major geologic provinces, Sierra Madre Occidental and Sierra Madre Oriental.

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  • Keystone mine, Pershing Co., Nevada, USA

    Sec 1-12 T34N R34E. Silver, Lead, Copper mine. Structure: Gently Dipping Shear Zones Alteration: Sericitization, Silicification, Kaolinization, Pyritization Commodity: Scheelite was found in drill core of granodiorite for 22 ft along the core from a depth of 135 ft down. Deposit: Ore zone varies from 2 to 6 ft in width. The mines are in granodiorite that cuts shale of triassic age.

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  • Mines and Minerals in the Tucson Mountains

    These magmas carried the copper-, gold- and silver-bearing siliceous fluids that eventually deposited ore-bearing minerals. The largest resurgent magma plume crystallized into the Amole granite and granodiorite which occupies a large area of the Saguaro National Park.

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  • Is granodiorite a mineral or a rock?

     · It''s a rock. Granodiorite is an intermediate intrusive igneous rock between granite and diorite. It is composed of multiple minerals.

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  • Petrogenesis of Ore‐Related Granodiorite Porphyry in the ...

    Copper is the primary commodity in the Jiande deposit, with Au–Ag–Pb–Zn as by-products. Ore minerals are pyrite, chalcopyrite and bornite, with minor native gold, silver sulfate minerals, sphalerite, and magnetite. Gangue minerals are quartz, garnet, with minor calcite and dolomite.

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  • New mines coming to Yukon, NWT and BC

     · The Eagle deposit has several ore types – oxide granodiorite, altered granodiorite, unaltered granodiorite, oxide metasediments, and unaltered metasediments. The largest ore sources are the oxide granodiorite (29%) and the unaltered granodiorite (42%). Taken together over the life of the mine, gold recovery will be 55%.

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  • Chile ~ Mining Geology

    Oxide ores contain a large variety of minerals but in chief antlerite, brochantite, atacamite, chrysocolla, and copper pitch. Also residuals of chalcocite are implied. The ore was overlain by leached capping and was an eastward and upward extension of …

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  • WoW Classic Ore Farming Guide: From Copper to Thorium ...

     · Smelting Silver Ore is a fast path over this bridge, so in a mature economy, many people will buy Silver Ore to get them over this difficult 10 levels. You can use it yourself, but unless you have a burning need for Silver Bars, keep it in ore form and keep mining over the 115-125 hump. Quests: Gnome Improvement; Nogg''s Ring Redo; Lore for a Price

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  • COPPER It

    0. Accessory minerals include sphene, allanite, and Cl-rich apatite; fluorite and ilmenite are generally absent. The ore bodies and intrusive complexes are local­ ized within strong northeast to east-northeast fault-fracture zones as much as 2,000 m wide. Primary ore minerals are chalcopyrite, bornite, molybdenite, and pyrite with rare

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  • MINES AND MINERAL DEPOSITS

    between limestone and epidotized granodiorite. A small ore pile alongside a dozer cut contained copper-stained limestone and another contained iron-stained quartz. A sample of the copper-stained material assayed 0.75 percent copper, 0.05 ounce silver, 0.001 ounce gold per ton, and no lead, zinc, or tungsten. A sample from the pile of iron-stained

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  • Distribution of gold, silver, copper, lead and zinc in the ...

    125 whole rock samples from the productive Marysville, Montana, granodiorite and the surrounding metamorphic rocks were analyzed by neutron activation analysis for gold and silver, and by atomic absorption for copper, lead and zinc. In the vicinity of known gold veins, anomalous values for gold and silver were found in both types of bedrock.

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  • Silver | Minerals Education Coalition

    Silver is found in lead, zinc, gold and copper ore deposits. The most important ore mineral of silver is argentite (Ag2S, silver sulfide). Silver is commonly extracted from ore by smelting or chemical leaching. Uses. Silver has been used for thousands of years for jewelry and decorative items of all types. Likewise, it has been used for silverware.

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  • Supergene Oxidation of Copper Deposits: Zoning and ...

    the nature and distribution of copper minerals occurring in oxide accumulations associated with weathering of copper sulfide deposits, with emphasis on minerals that occur in the supergene oxide zones of porphyry copper and skarn ore deposits."Copper oxides" are defined as those copper minerals containing oxidized

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  • Selenium Occurrences 283

    Ore minerals-Silver occurs native and alloyed with gold, copper, and mercury, and also in at least 55 well­ known silver minerals as a sulfide, arsenide, antimonide, telluride, chloride, bromide, and iodide, and as numerous sulfosalts. The commonest ore is silver-bearing galena, and fairly common are silver-bearing pyrite, sphalerite,

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  • Petrogenesis of Ore-Related Granodiorite Porphyry in the ...

    Ag–Pb–Zn as by-products. Ore minerals are pyrite, chalcopyrite and bornite, with minor native gold, silver sulfate minerals, sphalerite, and magnetite. Gangue minerals are quartz, garnet, with minor calcite and dolomite. The wallrock alteration is skarn, silicifi-cation and carbonate alternation. The granodiorite porphyry intruded into ...

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  • Metals, Copper, Silver, Gold & More

    Capistranomining Specializing in American Mined Gemstones Benitoite, Montana Missouri River Sapphire and Oregon Sunstone. I specialize on Untreated Natural Gems and Minerals Specimens of the United States, but I also carry many Worldwide specimens in addition to faceted gemstones, facet rough, Home mining packages and much more.

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  • The Mineral Gallery

    The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities, black or dark-colored streaks, and an igneous origin.

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  • Properties — Horn Silver Mines, Inc.

    The mine was developed to the 900 foot level. Ore was mined from an elongate breccia pipe enclosed in the main granodiorite stock. The breccia filling consisted of quartz, tourmaline, siderite, specularite and chalcopyrite, the latter constituting the only commercial material as an ore of copper containing minor amounts of gold and silver.

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