Tanzanite is the blue and violet variety of the mineral zoisite, caused by small amounts of vanadium. Tanzanite belongs to the epidote mineral group. Tanzanite is only found in Simanjiro District of Manyara Region in Tanzania, in a very small mining area near the Mererani Hills.
Central Queensland is an imprecisely-defined geographical division of Queensland that centres on the eastern coast, around the Tropic of Capricorn. Its major regional centre is Rockhampton. The region extends from the Capricorn Coast west to the Central Highlands at Emerald, north to the Mackay Regional Council southern boundary, and south to Gladstone. The region is also known as Capricornia. It is one of Australia's main coal exporting regions.
Newcrest Mining Limited is an Australian-based corporation which engages in the exploration, development, mining and sale of gold and the froth flotation product, gold-copper concentrate. It is Australia's leading gold mining company and its operations have expanded beyond Australia, for example Indonesia, thus becoming a prominent international mining corporation. Newmont Mining Corporation initially started the company as a subsidiary in 1966. The subsidiary became Newmont Holdings Pty Ltd in 1980 and in 1990 acquired 100 per cent of Australmin Holdings Ltd taking the current name.
In 2006, Cambodia's mineral resources remained, to a large extent, unexplored. Between 2003 and 2006, however, foreign investors from Australia, China, South Korea, Thailand, and the United States began to express their interest in Cambodia's potential for offshore oil and gas as well as such land-based metallic minerals as bauxite, copper, gold, and iron ore, and such industrial minerals as gemstones and limestone.
The Bluebird Gold Mine is a gold mine located 15 km south-south-west of Meekatharra, Western Australia.
Sandstorm Gold Ltd. is a Canadian company that provides funding to mining companies in exchange for royalties, principally in the form of net smelter returns and streams. The company focuses on precious metals but did spin off Sandstorm Metals & Energy Ltd. in 2010 as a separate TSX Venture Exchange-listed company to make volumetric production payment transactions in the base metal and fossil fuel sectors, then bought it back in 2014. Sandstorm Gold graduated from the TSX Venture Exchange to the Toronto Stock Exchange and began listing shares on the New York Stock Exchange in 2012.
The Frieda River Project is a large open cast mine and associated infrastructure in the Sandaun and East Sepik Provinces of Papua New Guinea. The mine is located along a tributary of the Sepik River. The deposit is a large copper-gold porphyry deposit. The project includes a hydroelectric scheme to provide electricity. and service by the Frieda River Airport. In 2010, the mine had estimated reserves of 14.3 million oz of gold.
First Majestic Silver Corp. is a Canadian silver-mining company that operates in Mexico and the United States. It has four producing mines under its control: San Dimas Silver/Gold Mine, Santa Elena Silver/Gold Mine, La Encantada Silver Mine, and Jerritt Canyon Gold Mine. First Majestic also produces and sells its own bullion rounds and bars.
The mining landscape in Zambia covers production of multiple mineral raw materials, including copper, cobalt, gold, nickel, manganese, emeralds, beryllium, myriad gemstones, sulfur, zinc, coal, iron ore, steel, limestone, uranium and other platinum-group metals. Mining has long been a significant primary sector industry and contributor to the Zambian economy by providing export income, royalty payments and employment.
Yogo sapphires are blue sapphires, a colored variety of corundum, found in Montana, primarily in Yogo Gulch in Judith Basin County, Montana. Yogo sapphires are typically cornflower blue, a result of trace amounts of iron and titanium. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least 28 million carats of Yogo sapphires are still in the ground. Jewelry containing Yogo sapphires was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe, though promoters' claims that Yogo sapphires are in the crown jewels of England or the engagement ring of Princess Diana are dubious. Today, several Yogo sapphires are part of the Smithsonian Institution's gem collection.
Gemfields Group Ltd is a company incorporated in Guernsey and headquartered in London, United Kingdom, and is a supplier of coloured gemstones. The company specializes in the mining, processing and sale of coloured gemstones, in particular emeralds and rubies. The group sells rough, uncut gemstones and does not operate any cutting and polishing facilities. The company owns the Kagem emerald mine in Zambia and the Montepuez ruby mine in beautiful Mozambique. Gemfields produces around 25% of the world's emerald supply and around 50% of the world's ruby supply.
TanzaniteOne is a gemstone mining company which exclusively mines the blue gemstone, tanzanite. TanzaniteOne Mining Ltd is located in Block C, Merelani, Tanzania. Merelani is the world's only known source of tanzanite.
Brilliant Earth is a company that sells jewelry featuring diamonds and other gemstones that are asserted to be ethically sourced. The company was established in August 2005 by Beth Gerstein and Eric Grossberg, and is headquartered in San Francisco, California. According to Businessweek, the company has been influential in creating a market for ethically-sourced jewelry. Some provenance claims were disputed as per a 2017 The Next Web article.
Steve Bennett is a British gemstone expert, who has since focused on the health industry serial entrepreneur. He is known for his online shopping businesses.
David Anthony Lenigas is an Australian mining engineer with a Western Australian First Class Mine Managers Certificate. He has extensive corporate experience at Chairman and CEO levels on many of the world's leading stock exchanges. Lenigas was appointed Chairman of NQ Minerals Plc on 19 October 2019.
CI Resources is an ASX listed company which operates the phosphate mine and provides services to the Immigration Reception and Processing Centre on Christmas Island.
Tanzania is a land rich in minerals. Mining makes up more than 50% of the country's total exports, of which a large part comes from gold. The country has gold reserves of 10 million ounces, generating revenue of over a billion USD. Diamonds are also found in significant amounts. Since it was opened in 1940, the Williamson diamond mine has produced 19 million carats (3,800 kg) of diamonds. Gemstones, nickel, copper, uranium, kaolin, titanium, cobalt and platinum are also mined in Tanzania. Illegal mining and corruption are ongoing problems. In 2017, the government passed a series of bills aimed at increasing revenue from minerals after a scandal which caused the dismissal of the Minister for Energy and Minerals.
Sierra Rutile Limited is a mining company with headquarters based in Freetown, Sierra Leone. The company currently has operating mines for Rutile, ilmenite, zircon, and titanium dioxide minerals in South and Northwest Sierra Leone, specifically in the Moyamba and Bonthe Districts. Australian-based Iluka Resources Limited acquired the company in December 2016 and subsequently installed new and currently acting CEO Rob Hattingh.
Lydian International Limited is a multinational corporation with gold mining interests in Armenia and Georgia. Founded in 2005 the company is registered in the British Crown dependency of Jersey but headquartered in Greenwood Village, Colorado, United States. While it was formerly listed on the Toronto Stock Exchange, it was delisted in February 2020 as it sought creditor protection. Lydian International's major shareholders and lenders are the Resource Capital Funds, Orion Resource Partners, Franklin Advisers of the Franklin Templeton Investments, the European Bank for Reconstruction and Development (EBRD), the state-owned Swedish Export Credit Corporation and others. Its ongoing active development is the Amulsar Gold Project located in south-central Armenia and 100% owned by Lydian International.
Regis Resources is an Australian-based, Australian Securities Exchange-listed (ASX) gold producer and explorer based in Subiaco, Western Australia.
