Relating the Mineralogical Characteristics of Tampakan Ore ...

The ore samples used in this study were supplied from the Tampakan copper-gold deposit located in the SE part of Mindanao in the Philippines. This porphyry copper deposit is estimated to have 1340 million tonnes of ore with an average grade of 0.66% Cu and 0.27 g/t Au. It also has significant levels of arsenic as enargite (Cu3AsS4) [7,28].

Relating the Mineralogical Characteristics of Tampakan Ore ...

The mineralogical characteristics of enargite-bearing copper ores from the Tampakan deposit have been investigated as the means to understanding the separation of enargite from other copper sulphides (chalcopyrite and bornite). It was found that a separation of these minerals was possible after grinding the ore samples to a P80 of 90 microns; enargite tends to be ground more readily than the ...

Establishing thE ProcEss MinEralogy of gold orEs

gold ores can be classified into 11 types (Table 1). Some metallurgical implications to these gold ore types are summarised below: Placers, quartz vein gold ores and oxidized ores: Generally, placers, quartz vein gold ores and oxidized ores are free-milling and gold can be recovered by gravity and/or direct cyanide leaching.

(PDF) Geochemistry of Hydrothermal Gold Deposits

Gold is transported by the ore-forming solutions as aqueous H2S(aq) complexes or its dissociated equivalent, bisulfide, and dissolved gold concentrations may reach the ppm level.

El Guanaco Gold Mine In Antofagasta, Chile | The Diggings™

The El Guanaco Gold Mine is in Antofagasta, Chile. The site was first discovered in 1887 by Spanish Colonials. Production output of the El Guanaco Gold Mine was considered to be medium size. Mine operations consist of surface and underground workings extending 280.00 hectares (691.89 acres). There is one known shaft.

Butte, Montana – The Richest Hill on Earth

The Leonard, Tramway and the upper levels of the Anaconda mine produced huge quantities of chalcocite-enargite ores from both vein systems in the Central zone. Silver and gold mineralization was weak and zinc occurred as trace amounts in the Central zone (Meyer, 1968).

Enargite: Mineral information, data and localities.

Econ Geol (1997) 92:468-484; Kieft, C. & Oen, I. S. (1973): Ore minerals in the telluride- bearing gold- silver ores of Salida, Indonesia, with special reference to the distribution of selenium. Mineralium Deposita 8, 312-320.

An outline of Japanese gold and silver production | Wat on ...

This is called Nansatsu-type gold ore in Japan and contains native gold, pyrite, enargite, covellite and native sulphur with porous quartz. Figure 5 shows typical gold ore from the Akeshi Mine. The term Nansatsu means "south of Satsuma" in Japanese. Figure 5: Gold ore from the Akeshi Mine.

Polymetallic replacement deposit - Wikipedia

The metallic ore minerals are mostly in sulphides, such as galena, sphalerite, enargite, and argentite. Gangue minerals include quartz, pyrite, rhodochrosite, and barite. The mineralogy changes with distance from the intrusive rock. Closest to the intrusion is the copper-gold zone; next is the lead-silver zone, then the zinc-manganese zone.

Minerals of the Masonic Mining District, Mono County ...

Figure 4. Sacking high-grade ore, Pittsburg-Liberty mine. c. 1907? Reno Gazette-Journal, July 6, 1907. Obtained from Ancestry.com Later shipments of rich ore, valued at over $700 per ton, were soon made from the Pittsburg-Liberty, which was the most important mine in the district and produced an estimated $600,000 in gold (or about 30,000 ounces) (Johnson, 1951).

Beneficiation of a gold bearing enargite ore by flotation ...

Beneficiation of a gold bearing enargite ore by flotation and As leaching with Na-hypochlorite. ... using sodium hypochlorite solutions has proven to be an effective technique for removing the arsenic contained in the enargite-rich gold concentrates obtained by flotation of the ores hosted in the deeper sulphide portions of the Italian Serrenti ...

Sulfidation State of Fluids in Active and Extinct ...

very high in central zones (pyrite + digenite + covellite + enargite) to intermediate and low in peripheral zones or latest stages (pyrite + tennantite + chalcopyrite). In high-sulfidation (HS) epithermal deposits the sulfidation state ranges from high for copper-rich enargite-bearing assemblages to intermediate for the later gold-rich tennantite-

Mineralization of the Northwest Quartz-Pyrite-Gold Veins ...

The Northwest quartz-pyrite-gold veins are situated 500 m east of the Lepanto fault in Mankayan, Luzon, Philippines. Most vein mineralization is hosted by the Lepanto metavolcanic

Schist Gold Ore - Fp Search

Super High Grade Gold & Silver Ore Samples! Super high grade gold and silver ore we removed from some high grade gold quartz veins! Assay results at the end of the video. Samples contain free gold, Pyrite Stockwork Veins With Gold & Silver In A Schist Zone! A heavily mineralized schist zone with pyrite veins found as a stockwork deposit.

ALTA Gold 2012 E-Doc - Albion Process

Enargite (and Luzonite) is a common copper-arsenic mineral that can be a significant ... Flotation test work on high throughput Ore B indicated that gold can also be concentrated to an extent by concentrating the sulphide component in the ore to mass pulls of 15 to 30 wt%, with gold

The Role of Arsenic in the Mining Industry

realgar and orpiment in China, Peru, and the Philippines, and from copper-gold ores in Chile. Arsenic also may be recovered from enargite, a copper mineral. Global resources of copper and lead bearing minerals contain approximately 11 million tons of arsenic. [23] Arsenic toxicity

Comparative Investigations On Sulfidic Gold Ore Processing ...

Comparative investigations on sulfidic gold ore comparative investigations on sulfidic gold ore processing a novel biooxidation process optionone of the examples is the el indio smelter in chilegold extraction decreased with lower temperature and less time of oxidationt 220 c both gold and silver extractions remained about the same as the.

Mulgabbie Goldfield, Kalgoorlie-Boulder Shire, Western ...

Mulgabbie Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia : About 130 kilometres north-east of Kalgoorlie, along the Kurnalpi-Pinjin Road. Historic mining was alluvial and minor reefing near Mulgabbie Hill. Five modern pits and the Saracen's Carosue ...

Beneficiation of a gold bearing enargite ore by flotation ...

The deep mineralized bodies of the Italian Serrenti-Furtei gold-bearing deposit, located in southern Sardinia, contain substantial amounts of enargite-luzonite and pyrite with subordinate tennantite, covellite, chalcopyrite and arsenopirite.

(PDF) High Sulphidation Gold Deposits - A Summary

High Sulphidation Gold Deposits ... it is believed that over three million ounces of gold were recovered from gold-enargite-sulfide ores. ... breccias to the various gold ore bodies was great use ...

Knelson Concentrator Polymetallic Ore

May 22, 2019· 1 Raw gold ore property 1.1 Chemical composition. Copper and iron are the two main elements in the raw ore, and exist in the forms of alpha chalcocite, covelline, enargite, iron pyrite.

Enargite-Gold Deposits at Marcapunta, Colquijirca Mining ...

Ore mineralogy is dominated by enargite, covellite, native gold, and several precious metal-bearing telluride phases. Hypogene chalcocite and digenite occur in a discrete lower manto beneath the enargite zone of western Marcapunta. Gold appears to be concentrated in the southwestern parts of the replacement bodies.

Dona Ana County New Mexico Gold Production

The fact that the gold content is related to the copper content suggests that the gold is most commonly associated with chalcopyrite; some gold was found as inclusions in pyrite. Other common ore minerals in other deposits in the district include tetrahedrite, argentite, enargite, and tetradymite (bismuth telluride).

Update: Searching for silver in enargite, famatinite, and ...

The Morning Star is a high-sulfidation epithermal deposit that produced copper-gold-silver ore. Based on the literature and the minerals observed in mine dump samples, the ore was apparently composed of copper sulfosalts (enargite, luzonite, and famatinite) mixed to varying degrees with pyrite, clay minerals, and altered rock.

El Indio Gold Mine In Coquimbo, Chile | The Diggings™

The El Indio Gold Mine is in Coquimbo, Chile. The site was first discovered in 1974. The ore mined is composed of bornite, enargite and sphalerite with waste material consisting primarily of jarosite, alunite and quartz. The ore body extends 10 meters (32 feet) in width. Associated rock in this area is diorite.

Borealis Gold Mine Near Hawthorne, Nevada | The Diggings™

The Borealis Gold Mine is near Hawthorne, Nevada. Historically the site has been associated with the Lucky Boy Mining District which is now part of the Toiyabe National Forest. The site was first discovered in 1930 by S. W. Ivosevic Of H. O. M. Company. The Borealis Gold Mine is a surface and underground mining operation.

Supergene gold enrichment in the ... - Cambridge Core

Complementary studies for characterization of gold ores were carried out using SEM and X-ray Microanalysis (EDS) at the Materials Center of the University of Porto. The SEM study was performed using a high-resolution JEOL JSM 6301F SEM coupled with an Oxford INCA Energy 350 system. Samples were carbon coated using a JEOL JEE-4X Vacuum Evaporator.

Arsenic leaching from a gold bearing enargite flotation ...

The high arsenic content of the flotation concentrate obtained from a gold-bearing enargite ore for pyrometallurgical processing strongly diminishes its market value. An investigation has been carried out for selectively leaching arsenic from enargite–luzonite minerals using alkaline Na 2 S solutions.