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Selenite, satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum.. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO 4 ·2H 2 O. Selenite contains no selenium, the similar names both derive from Greek selḗnē (σελήνη 'Moon').
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[10] [11] [12] Glencore International is a shareholder in Harita's Bauxite Division in PT Cita Mineral Investindo Tbk. Nickel division: The group also mines and sells nickel ore. In June 2015, Harita Group announced its investment of US$380 million to build a nickel smelter and a 120-megawatt power plant in North Maluku.
PT Semen Indonesia (Persero) Tbk (known as SIG) is a state-owned holding company providing building material solutions. The company has 17 subsidiaries located in Indonesia and Vietnam . With a market reach to Asia , Australia and Oceania , the company's main business is in the cement sector and its derivative products such as concrete , mortar ...
Energi Mega Persada (“ENRG”) a company focused on developing and exploring the upstream oil and gas in Indonesia was founded. [6] Bakrie Group also acquired 80% of the coal mining company PT. Arutmin Indonesia (Arutmin) from BHP Minerals Exploration Inc, and PT Kaltim Prima Coal from (British Petroleum (BP) and Rio Tinto, in 2003. [7]
The mine is located in the west of the country in North Sumatra. [1] The mine has measured reserves (as of 31 December 2013) of 3.0 million oz of gold and 31.9 million oz of silver; these reserves are included in mineral resources (that may or may not be economic to mine) of 8.1 million oz of gold and 73.8 million oz of silver.
Selenite sulfates are mixed anion compounds containing both selenite (SeO 3 2−) and sulfate (SO 4 2−) anions. They have transparent crystals that may be coloured by cations. Selenite sulfate minerals are known including pauladamsite and munakataite .