Process Of Mining In Batu Hijau Mine Indonesia

Batu Hijau mine Southwest region of the island of Sumbawa, in the District of Sekongkang, West Nusa Tenggara Province in Indonesia

Batu Hijau mine is process of mining with a large surface mining operation in Indonesia,  the located in the southwest region of the island of Sumbawa, in the District of Sekongkang, West Nusa Tenggara Province in Indonesia.  Batu hijau mine Indonesia originally discovered in 1990 and then commercial mining production began in 2000, primarily producing copper and small amounts of gold and silver.

Mining Project in Batu Hijau mine held by PT Newmont Nusa Tenggara (PTNNT), a company owned by Newmont Indonesia (US, 35.44%); Nusa Tenggara Mining Corporation (Japan, 27.56%), PT Pukuafu Indah (Indonesia, 20%) and PT Multi Daerah Bersaing (Indonesia, 17%) with system  contract of work and Newmont as the project operator.

MINERAL DEPOSIT IN BATU HIJAU MINE INDONESIA

Ore mineral in Batu hijau mine Indonesia

Mineral deposits in the mines Batu hijau is a porphyry copper deposit containing small amounts of gold and silver ore

These Porphyry copper deposit are overwhelmingly hosted by composite stocks of diorite to quartz-diorite and, to a much lesser degree, more felsic compositions such as tonalite and monzogranite.

Mineral deposits tend to be characterised by a strong correlation between the distribution of copper sulphides (chalcopyrite and bornite) and gold as the native metal in addition to having a notably higher magnetite content. Gold typically occurs as minute (<10-15 micron) inclusions in the copper sulphides.

Porphyry copper deposit is indeed very typical deposit found in the Southeast Asian region. These porphyry deposit is one in which the valuable metals are not immediately available and require processing since they are mixed with rocks and minerals that are not economical to process.

Ahafo Mine In Ghana Mining Operations And Mining Methods

Ahafo gold mine in Ghana is owned Newmont Mining, one of the world’s largest gold mining company. The Ahafo mine is located in the Brong Ahafo region of west-central Ghana west africa, about 30 km south of Sunyani and 307 km northwest of the capital city of Accra. Gold mine production in Ahafo started 2006 and in 2010, produced 545,000 oz of gold at a cost of $450/oz.  Ahafo has two primary ore zones: Ahafo South and Ahafo North. Mining is currently underway at Ahafo South.

Ahafo gold mine’s property covers three segments of the granodiorite - metasediment contact. Gold mineralisation is generally associated with a brecciated and hydrothermally altered shear-zone of granodiorite lying in thrust/wrench contact with underlying graphitic phyllites of the Birimian Supergroup. The phyllities also contain scattered pods of gold mineralisation, but these appear to be limited to a zone lying no more than 20 m from the granodiorite. The thrust contact always dips east at angles varying from 30° to 65°. Gold mineralisation is also associated with a shear zone about 1.2 km east of the granodiorite - metasediment contact that was expressed by a low-level soil geochemical target. The granodiorite hosted shear zone is subparallel to the main trend and dipping from 60° east to sub-vertical.

Mining Operations And Mining Methods  In Ahafo Mine In Ghana

Akyem Gold Mine In Ghana ( Methods Of Gold Mining Akyem Mine )

Akyem gold mine in Ghana is located in the Birim North District of the Eastern Region, approximately 111 miles northwest of the capital city of Accra Ghana which is a region of west African gold mine. Akyem gold mine is wholly-owned and operated by Newmont Mining Corporation. That obtained the mining lease for Akyem mine in 2010 and commercial production at its Ghana Akyem gold mine in 2013. It is Newmont's second mining operation in Ghana after the Ahafo gold mine Africa in Brong Ahafo Region.

The mine site in Akyem covers a total area of 1,903ha of which, 74ha lies in the Ajenjua Bepo Forest Reserve, Newmont company employs 1,300 workers in Akyem gold mine and mostly recruited workers from the community of the area around the mining area Akyem

Mineral Deposit In Akyem Gold Mine

Gold Mining Project Tulu Kapi In Ethiopia.

KEFI  Minerals  (AIM:  KEFI), has  appointed  and told investors it has selected  African  Mining  Services  ( AMS ) ,  a  wholly-owned  subsidiary  of  Ausdrill Limited, as preferred contractor for mine establishment and operation for the Tulu Kapi gold mining project in Ethiopia.

The arrangement will cover certain pre-mining earthworks as well as the life-of-mine open pit operation, though Kefi will remain directly responsible for key input costs such as explosives and fuel.

With a Probable Ore Reserve of 1.05 million ounces and Mineral Resources totalling 1.72 million ounces of gold, the Tulu Kapi gold project in Western Ethiopia is being rapidly progressed towards development.

The altitude of the project area Tulu Kapi gold mining in Ethiopia  is between 1,600m and 1,765m above sea level. The climate is temperate with annual rainfall averaging about 150cm.

Tulu Kapi Gold Mine In Ethiopia Gold Mining Project By KEFI Minerals

Tulu Kapi Gold Mine is situated 28km east of Ayra-Gulliso town in the state of Oromia, Ethiopia. Gold deposit in Tulu Kapi gold mines Ethiopia was discovered and mined on a small scale by an Italian consortium in the 1930’s. And in 2009 Nyota Minerals Limited acquired the licences Tulu Kapi gold mine and then undertook extensive exploration and drilling which culminated in December 2012.

Tulu Kapi gold mines in Ethiopia is now owned by KEFI Minerals, who bought 100% of the license held earlier by UK-based gold exploration and development company Nyota Minerals (Ethiopia) by 2014.

KEFI Minerals was formed on 24 October 2006 with a view to creating shareholder value through the discovery and exploitation of gold and copper deposits. The Company’s initial assets were EMED Mining’s exploration interests in Turkey and Bulgaria.