• (PDF) Skarns in the Porphyry Copper-Gold Environment

    Porphyry-related skarns are common around the Pacific Rim. Examples include Cadia and Goonumbla (Australia) Ok Tedi (PNG) and Ertsberg and Grasberg (Indonesia). Although usually treated as

    Copper–Gold Skarn Mineralization at the Karavansalija Ore

    The copper‐gold mineralization within the Karavansalija ore zone has not been a target of extensive studies, with data available mainly from technical reports. Generally two types of mineralization can be outlined within the ore zone: Cu–Fe–As–Bi–Au–Zn–S mineralization in the form of randomly distributed and disseminated sulfide aggregates within the skarn and adjacent rocks

    Gold Skarns British Columbia

    (Figure 12). Thus, the gold potential of a skarn can be easily overlooked if copper sulphiderich outcrops are preferentially sampled and other sulphidebearing or sulphide- -lean assemblages ignored. 10. In some Au skarns (e.g. the Nickel Plate and Fortitude deposits) there is a metal and mineralogical zoning throughout the exoskarn envelope. This zoning consists of proximal garnet-dominant

    Major and Trace Element Geochemistry of Pyrite and

    Dongguashan copper (gold) deposit is a stratabound skarn-type ore deposit associated with magma intrusion activity during the Yanshanian Period. Keywords: EPMA and LA-ICP-MS; major and trace elements; pyrite and pyrrhotite; Dongguashan copper (gold) deposit; Tongling ore district 1. Introduction As minerals represent the most basic units of rocks and/or ore, their chemical composition and type

    gold skarn copper pyrite BINQ Mining

    07/03/2013· > Mining News > gold skarn copper pyrite; Print. gold skarn copper pyrite. Posted at:March 7, 2013[ 4.7 1397 Ratings] All about skarns Clark Science Center Intranet Smith College. The Battle Mountain District contains several different skarn types ranging from a typical copper skarn with low gold grades pyrite, and scheelite. Gold »More detailed. Observations of the

    Geology and Skarn Cu–Bi–Au Mineralization at Shwe Min

    Pyrite and chalcopyrite occur as ore chalcopyrite by tennantite and bornite of Bwet Taung orebody (BT7); (d) the relation of tennantite, bornite, and native gold in the retrograde skarn of Bwet Taung orebody (BT7); (e) native gold associated with bismuth–tellurite mineral in brecciated marble (TGM28) (Tiger Mouth orebody); and (f) native gold and chalcopyrite with tennantite in

    (PDF) Skarns and Skarn Deposits ResearchGate

    12/12/1992· Most are associated with I-type calc-alkalic, porphyritic plutons and form along the contact with intrusive stocks (Meinert, 1992). The Batu Hijau deposit, the gold-copper skarn related porphyry...

    Relationship Between Magmatism and Mineralization in the

    Minor gold along with molybdenite, some copper, and base-metal skarn mineralization occurred during this early event. A second mineralization event, which accounts for the bulk of the gold in the deposit is characterized by advanced argillic alteration, free gold, and abundant pyrite in the matrix of magmatic-hydrothermal breccias.

    Mineralogical and Metallurgical Examination of

    Skarn orebodies associated with the orebodies include the Edinburgh, Gold Coast, Paris and the Deep skarn. Skarn copper mineralisation may be contained in massive magnetite, massive sulphide {mainly pyrite), calc-silicates or any combination of the three. Host rock siltstone contacting the

    POLYMETALLIC VEIN AND REPLACEMENT DEPOSITS (MODELS 19a

    polymetallic replacement deposits are associated with skarn deposits in which host carbonate rocks are replaced by calc-silicate±iron oxide mineral assemblages. Most polymetallic vein and replacement deposits are zoned such that copper-gold ore is proximal to intrusions, whereas lead-zinc-silver ore is laterally and vertically distal to intrusions. Examples Leadville, Gilman, and Breckenridge

    Alicanto Minerals hits copper mineralisation at Sweden

    The hit for visible chalcopyrite copper occurred in the first hole drilled at Alicanto Minerals’ (ASX:AQI) Heden East target inside its Greater Falun project. Drilling intersected 2.85m of massive pyroxene pro-grade skarn with bubble-like features of chalcopyrite copper and pyrite, including 1.02m of 5-10 per cent sulphides, from 69.95m.

    Major and Trace Element Geochemistry of Pyrite and

    Dongguashan copper (gold) deposit is a stratabound skarn-type ore deposit associated with magma intrusion activity during the Yanshanian Period. Keywords: EPMA and LA-ICP-MS; major and trace elements; pyrite and pyrrhotite; Dongguashan copper (gold) deposit; Tongling ore district 1. Introduction As minerals represent the most basic units of rocks and/or ore, their chemical composition and type

    Copper-Gold Skarn Mineralization at the Karavansalija Ore

    T1 Copper-Gold Skarn Mineralization at the Karavansalija Ore Zone, Rogozna Mountain, Southwestern Serbia. AU Budinov, Zhivko D. AU Yonezu, Kotaro. AU Tindell, Thomas. AU Gabo-Ratio, Jillian Aira. AU Milutinovic, Stanoje. AU Boyce, Adrian J. AU Watanabe, Koichiro. PY 2015/10/1. Y1 2015/10/1

    Investigation of the reasons for copper and gold loss in

    These studies indicated that for greater than 20% pyrite skarn in the concentrator feed blend, lower than expected gold and copper recoveries were achieved in the cleaner bank. Pulp and surface chemical analytical techniques indicated layers of oxide coatings existed on all particles, depressing flotation.

    gold skarn copper pyrite BINQ Mining

    07/03/2013· > Mining News > gold skarn copper pyrite; Print. gold skarn copper pyrite. Posted at:March 7, 2013[ 4.7 1397 Ratings] All about skarns Clark Science Center Intranet Smith College. The Battle Mountain District contains several different skarn types ranging from a typical copper skarn with low gold grades pyrite, and scheelite. Gold »More detailed. Observations of the

    Copper-Gold Skarn Mineralization at the Karavansalija Ore

    Copper-Gold Skarn Mineralization at the Karavansalija Ore Zone, Rogozna Mountain, Southwestern Serbia. the studied sulfide mineralization is represented mainly by arsenopyrite aggregates with subordinate amounts of pyrite and chalcopyrite. Gold is present rarely as visible aggregate of native gold and also as invisible element included in arsenopyrite. The fluid inclusion microthermometry

    Geology and Skarn Cu–Bi–Au Mineralization at Shwe Min

    Pyrite and chalcopyrite occur as ore chalcopyrite by tennantite and bornite of Bwet Taung orebody (BT7); (d) the relation of tennantite, bornite, and native gold in the retrograde skarn of Bwet Taung orebody (BT7); (e) native gold associated with bismuth–tellurite mineral in brecciated marble (TGM28) (Tiger Mouth orebody); and (f) native gold and chalcopyrite with tennantite in

    Geochemistry of sulfide minerals from skarn Cu (Au

    01/07/2020· Although several ore deposit-types investigations have focused on pyrite in the last decades (e.g., Large et al. (2009), Carlin gold deposits; Kouhestani et al. (2017), Epithermal deposit; Reich et al. (2013), Porphyry copper deposits; Mukherjee and Large (2017), SEDEX deposits; Dehnavi et al. (2018), VMS deposits), details of the in-situ element composition of pyrite from skarn deposits

    Mineralogical and Metallurgical Examination of

    Skarn orebodies associated with the orebodies include the Edinburgh, Gold Coast, Paris and the Deep skarn. Skarn copper mineralisation may be contained in massive magnetite, massive sulphide {mainly pyrite), calc-silicates or any combination of the three. Host rock siltstone contacting the

    POLYMETALLIC VEIN AND REPLACEMENT DEPOSITS (MODELS 19a

    polymetallic replacement deposits are associated with skarn deposits in which host carbonate rocks are replaced by calc-silicate±iron oxide mineral assemblages. Most polymetallic vein and replacement deposits are zoned such that copper-gold ore is proximal to intrusions, whereas lead-zinc-silver ore is laterally and vertically distal to intrusions. Examples Leadville, Gilman, and Breckenridge

    Major and Trace Element Geochemistry of Pyrite and

    Dongguashan copper (gold) deposit is a stratabound skarn-type ore deposit associated with magma intrusion activity during the Yanshanian Period. Keywords: EPMA and LA-ICP-MS; major and trace elements; pyrite and pyrrhotite; Dongguashan copper (gold) deposit; Tongling ore district 1. Introduction As minerals represent the most basic units of rocks and/or ore, their chemical composition and type

    THE MINERALOGY OF GOLD-COPPER SKARN RELATED

    Key words: Gold-copper skarn, metasomatic alter-ation, Batu Hijau, Indonesia 1 Introduction Gold-copper skarns probably the world’s most abundant among skarn types, which can be mainly produced in orogenic zones related to subduction zone setting, both in oceanic and continental settings (Einaudi, 1982a and Ein-audi, 1982b; Einaudi et al

    Copper-Gold Skarn Mineralization at the Karavansalija Ore

    Copper-Gold Skarn Mineralization at the Karavansalija Ore Zone, Rogozna Mountain, Southwestern Serbia. the studied sulfide mineralization is represented mainly by arsenopyrite aggregates with subordinate amounts of pyrite and chalcopyrite. Gold is present rarely as visible aggregate of native gold and also as invisible element included in arsenopyrite. The fluid inclusion microthermometry

    Copper ore (Ertsberg Copper-Gold Skarn Deposit, Late

    29/07/2007· Geologic unit: Ertsberg Copper-Gold Skarn Deposit, altered limestone roof pendant in the Ertsberg Intrusion, Late Pliocene, 2.97 to 3.28 Ma Locality: Ertsberg Mine, Ertsberg Mining District, western New Guinea (04° 04' 36.86" South latitude, 137° 07' 26.16" East longitude) ----- Site-specific info. mostly from: Gibbins (2006) The Magmatic and Hydrothermal Evolution of the Ertsberg

    Wolf Mountain Copper-Gold Target, Sweden For personal use only

    skarn system discovered at wolf mountain copper-gold target high grade vms discovery at lustebo (oxberg project) up to 9.5% copper, 16 g/t gold, 285 g/t silver, 3.9% lead, 8.2% zinc high-grade gold discovery of up to 202.4 g/t gold at arakaka in guyana. o registered office alicanto minerals limited acn 149 126 858 suite 3, level 3, 24 outram street

    The Mineralogy of the Copper Gold Ore Deposits at the

    The Phu Kham Cu-Au deposit Porphyry-related skarn-type mineralization, Lao PDR is hosted by complexly deformed, schistose, quartz-sericite-pyrite altered Permo-Carboniferous volcanic, volcaniclastic and intrusive rocks. These rocks occupy the immediate hanging wall of a large NE-dipping thrust fault. Unmineralized, variably deformed red beds of the Mesozoic Khorat basin occur in the foot

    PorterGeo Database Ore Deposit Description

    Gold mineralisation accompanied prograde and retrograde skarn development and the quartz-pyrite-adularia stages, although most accompanies the retrograde and quartz-pyrite-adularia stages. The highest grades occur where the quartz-pyrite-adularia stage overprints the skarns. The ore is found in the proximal garnet rich skarn in contrast to the Fortitude orebody at Battle Mountain. The sulphide

    Mineralogical and Metallurgical Examination of

    Skarn orebodies associated with the orebodies include the Edinburgh, Gold Coast, Paris and the Deep skarn. Skarn copper mineralisation may be contained in massive magnetite, massive sulphide {mainly pyrite), calc-silicates or any combination of the three. Host rock siltstone contacting the

    A PULP-CHEMICAL STUDY OF SKARN ORE FEED BLENDS AT THE

    Pyrite skarn 13.3 2.20 2.57 0.22 2.79 60.3 53.7 Calc-Silicate Skarn 13.3 2.40 1.72 0.20 1.97 67.2 61.2 Oxide Skarn 15.1 4.14 1.75 0.81 1.95 22.8 57.8 Ore for the remainder of mine life includes 60% porphyry sulfide-intrusive (0.6% Cu, 0.6g/t Au) and 35% sulfide skarn. The skarn ores represent 50% of copper and gold to mine life. The sulfide

    Relationships between a Porphyry Cu-Mo Deposit, Base and

    or lead-zinc skarn deposits. The peripheral ores have contributed significantly to the production of most of these porphyry-cored districts. Lead, zinc, copper, silver, and gold are typically the major commodities. At Butte, manganese and arsenic have also been produced (Meyer et al., 1968). Although this spatial association of porphyry and

    MINERALOGY AND ORIGIN OF COPPER- GOLD BEARING SKARN

    A copper-gold bearing skarn was newly found in the deep level of the Batu Hijau deposit which is an island arc porphyry deposit, located in the southwestern corner of Sumbawa Island, in the west Nusa Tenggara Province, Sunda-Banda Archipelago of Indonesia. In this paper, the mineralogical and geochemical data on skarn, fluid inclusion thermometry, and sulfur isotope composition of skarn ore

    Copper-Gold Skarn Mineralization at the Karavansalija Ore

    Copper-Gold Skarn Mineralization at the Karavansalija Ore Zone, Rogozna Mountain, Southwestern Serbia. the studied sulfide mineralization is represented mainly by arsenopyrite aggregates with subordinate amounts of pyrite and chalcopyrite. Gold is present rarely as visible aggregate of native gold and also as invisible element included in arsenopyrite. The fluid inclusion microthermometry

    All about skarns Clark Science Center

    02/11/2007· The Battle Mountain District contains several different skarn types ranging from a typical copper skarn with low gold grades, called the West Ore Body, to gold-rich, copper-poor skarns such as the Upper and Lower Fortitude ore bodies. The West ore body is adjacent to the 38-38.5 Ma (Theodore et al. 1978, K-Ar on primary biotite) Copper Canyon granodiorite porphyry. The skarns nearest the

    Copper ore (Ertsberg Copper-Gold Skarn Deposit, Late

    29/07/2007· Geologic unit: Ertsberg Copper-Gold Skarn Deposit, altered limestone roof pendant in the Ertsberg Intrusion, Late Pliocene, 2.97 to 3.28 Ma Locality: Ertsberg Mine, Ertsberg Mining District, western New Guinea (04° 04' 36.86" South latitude, 137° 07' 26.16" East longitude) ----- Site-specific info. mostly from: Gibbins (2006) The Magmatic and Hydrothermal Evolution of the Ertsberg

    The Mineralogy of the Copper Gold Ore Deposits at the

    The Phu Kham Cu-Au deposit Porphyry-related skarn-type mineralization, Lao PDR is hosted by complexly deformed, schistose, quartz-sericite-pyrite altered Permo-Carboniferous volcanic, volcaniclastic and intrusive rocks. These rocks occupy the immediate hanging wall of a large NE-dipping thrust fault. Unmineralized, variably deformed red beds of the Mesozoic Khorat basin occur in the foot

    Aurwest Resources Provides Update on Stellar Copper

    Widespread copper-gold-silver mineralization with numerous rock samples containing greater than 1.0% copper, and in some cases molybdenum, occurs within the Lynx target. The high-grade copper-silver veins in skarn (chalcopyrite-bornite) suggests proximity to a porphyry copper system within the Erin zone. A 2.4 km long, structurally controlled Quartz vein system is located in the Lynx target

    PorterGeo Database Ore Deposit Description

    Gold mineralisation accompanied prograde and retrograde skarn development and the quartz-pyrite-adularia stages, although most accompanies the retrograde and quartz-pyrite-adularia stages. The highest grades occur where the quartz-pyrite-adularia stage overprints the skarns. The ore is found in the proximal garnet rich skarn in contrast to the Fortitude orebody at Battle Mountain. The sulphide

    IOP Conference Series: Earth and Environmental Science

    identified: gold-skarn ore and gold-quartz ore. The content of sulfides varies between 1-5%, with pyrite, arsenic pyrite, magnetic pyrite, and copper pyrite being well developed. Sphalerite, molybdenite, erubescite, chalcosine, galena, fahlite, tellurides and Bi, Pb, Ag sulfotellurides are rarer [3, 4]. The purpose of the present study is to reveal basic localization features of gold-ore

    A PULP-CHEMICAL STUDY OF SKARN ORE FEED BLENDS AT THE

    Pyrite skarn 13.3 2.20 2.57 0.22 2.79 60.3 53.7 Calc-Silicate Skarn 13.3 2.40 1.72 0.20 1.97 67.2 61.2 Oxide Skarn 15.1 4.14 1.75 0.81 1.95 22.8 57.8 Ore for the remainder of mine life includes 60% porphyry sulfide-intrusive (0.6% Cu, 0.6g/t Au) and 35% sulfide skarn. The skarn ores represent 50% of copper and gold to mine life. The sulfide

    Intrusion-related Gold Systems. A brief summary by Bruce

    discovered gold deposits, such as Fort Knox, Shotgun, Dublin Gulch and Donlin Creek in the Tintina Gold Province that encompasses central Alaska (USA) and the Yukon (Canada) in North America, as type examples. This provides a broader geographical setting for IRGS deposits than that initially thought to be restricted to porphyry‐copper provinces.

 

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