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Amblygonite is a fluorophosphate mineral, (Li,Na)AlPO4(F,OH), composed of lithium, sodium, aluminium, phosphate, fluoride and hydroxide. The mineral occurs in pegmatite deposits and is easily mistaken for albite and other feldspars. Its density, cleavage and flame test for lithium are diagnostic. Amblygonite forms a series with montebrasite, the low fluorine endmember. Geologic occurrence is in granite pegmatites, high-temperature tin veins, and greisens. Amblygonite occurs with spodumene, apatite, lepidolite, tourmaline, and other lithium-bearing minerals in pegmatite veins. It contains about 10% lithium, and has been utilized as a source of lithium. The chief commercial sources have historically been the deposits of California and France.
A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes greater than 1 meter (3 ft). Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic composition to granite. However, rarer intermediate composition and mafic pegmatites are known.
Lepidolite is a lilac-gray or rose-colored member of the mica group of minerals with chemical formula K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2. It is the most abundant lithium-bearing mineral and is a secondary source of this metal. It is the major source of the alkali metal rubidium.
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl(SiO3)2, and is a commercially important source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green hiddenite, prismatic crystals, often of great size. Single crystals of 14.3 m (47 ft) in size are reported from the Black Hills of South Dakota, United States.
Zinnwaldite, KLiFeAl(AlSi3)O10(OH,F)2, potassium lithium iron aluminium silicate hydroxide fluoride is a silicate mineral in the mica group. The IMA status is as a series between siderophyllite (KFe2Al(Al2Si2)O10(F,OH)2) and polylithionite (KLi2AlSi4O10(F,OH)2) and not considered a valid mineral species.
The Southeast Missouri Lead District, commonly called the Lead Belt, is a lead mining district in the southeastern part of Missouri. Counties in the Lead Belt include Saint Francois, Crawford, Dent, Iron, Madison, Reynolds, and Washington. This mining district is the most important and critical lead producer in the United States.
Uranium mining in Colorado, United States, goes back to 1872, when pitchblende ore was taken from gold mines near Central City, Colorado. The Colorado uranium industry has seen booms and busts, but continues to this day. Not counting byproduct uranium from phosphate, Colorado is considered to have the third largest uranium reserves of any US state, behind Wyoming and New Mexico.
Hemerdon Mine, also known as Hemerdon Ball Mine, Hemerdon Bal Mine and (briefly) previously as Drakelands Mine is a tungsten and tin mine. It is located 11 km northeast of Plymouth, near Plympton, in Devon, England. It lies to the north of the villages of Sparkwell and Hemerdon, and adjacent to the large china clay pits near Lee Moor. The mine had been out of operation since 1944, except for the brief operation of a trial mine in the 1980s. Work started to re-open it in 2014, but it ceased activities in 2018. It hosts the fourth largest tin-tungsten deposit in the world.
The mining of minerals in Nigeria accounts for only 0.3% of its gross domestic product, due to the influence of its vast oil resources. The domestic mining industry is underdeveloped, leading to Nigeria having to import minerals that it could produce domestically, such as salt or iron ore. The rights to ownership of mineral resources is held by the Federal Government of Nigeria, which grants titles to organizations to explore, mine, and sell mineral resources. Organized mining began in 1903, when the Mineral Survey of the Northern Protectorates was created by the British colonial government. A year later, the Mineral Survey of the Southern Protectorates was founded. By the 1940s, Nigeria was a major producer of tin, columbite, and coal. The discovery of oil in 1956 hurt the mineral extraction industries, as government and industry both began to focus on this new resource. The Nigerian Civil War in the late 1960s led many expatriate mining experts to leave the country. Mining regulation is handled by the Ministry of Solid Minerals Development, who are tasked with the responsibility of overseeing the management of all mineral resources in Nigeria. Mining law is codified in the Federal Minerals and Mining Act of 1999. Historically, Nigeria's mining industry was monopolized by state-owned public corporations. This led to a decline in productivity in almost all mineral industries. The Obasanjo administration began a process of selling off government-owned corporations to private investors in 1999. The Nigerian Mining Industry has picked up since the "Economic Diversification Agenda", from Oil & Gas, to Agriculture, Mining, etc., began in the country.
Mining in Afghanistan was controlled by the Ministry of Mines and Petroleum, prior to the August 15th takeover by the Taliban. It is headquartered in Kabul with regional offices in other parts of the country. Afghanistan has over 1,400 mineral fields, containing barite, chromite, coal, copper, gold, iron ore, lead, natural gas, petroleum, precious and semi-precious stones, salt, sulfur, lithium, talc, and zinc, among many other minerals. Gemstones include high-quality emeralds, lapis lazuli, red garnet and ruby. According to a joint study by The Pentagon and the United States Geological Survey, Afghanistan has an estimated US$1 trillion of untapped minerals.
The Tanco Mine or Bernic Lake mine is an underground caesium and tantalum mine, owned and since 2019 owned and operated by Sinomine Resource Group on the north west shore of Bernic Lake, Manitoba, Canada. The mine has the largest known deposit of pollucite and is also the world's largest producer of caesium.
The regional geology of Serbia describes the geologic structure and history inside the borders of Serbia.
Tin mining began early in the Bronze Age, as bronze is a copper-tin alloy. Tin is a relatively rare element in the Earth's crust, with approximately 2 ppm, compared to iron with 50,000 ppm.
Greenbushes mine is an open-pit lithium mining operation located south of the town of Greenbushes, Western Australia. It is the world's largest hard-rock lithium mine, producing approximately 1.95 million tonnes of lithium spodumene annually. The mine is 250 kilometres south of Perth and 90 kilometres southeast of the port of Bunbury.
The Kamativi mine was one of the largest tin mines in Zimbabwe. The mine is located in western Zimbabwe in Matabeleland North Province. The Kamativi mine has reserves amounting to 100 million tonnes of tin ore grading 0.28% tin thus resulting 0.28 million tonnes of tin. The tin and tantalum mine was operated from 1936 until 1994. Since the mine's closure, local artisanal miners have worked the pegmatite for cassiterite and tantalite.
The Manono-Kitolo mine is a former tin and coltan mine, which also contains one of the largest lithium reserves globally, in the Democratic Republic of the Congo. The mine is located in southern Democratic Republic of the Congo in Tanganyika Province. The Manono-Kitolo mine has reserves amounting to 120 million tonnes of lithium ore grading 0.6% lithium thus resulting 0.72 million tonnes of lithium.
Etta, also known as Etta Camp and Etta Mine, is a ghost town in Pennington County, South Dakota, United States. It was a successful mining town, known for its discovery of the largest spodumene crystal ever found.
Australia has one of the biggest lithium reserves and is the biggest producer of lithium by weight, with most of its production coming from mines in Western Australia. Most Australian lithium is produced from hard-rock spodumene, in contrast to other major producers like Argentina, Chile and China, which produce it mainly from salt lakes.
The Harding Pegmatite Mine is a former adit mine that extracted lithium, tantalum, and beryllium from a Precambrian pegmatite sill. It ceased operations in 1958 and its owner, Arthur Montgomery, donated it to the University of New Mexico, which runs the site as an outdoor geology laboratory with mineral collecting permitted on a small scale.
The Finnis Lithium Project is a lithium mine situated near Darwin in the Northern Territory, Australia. It is being developed by Core Lithium.
References
- ↑ Horton, J.W., Jr., and Butler, J.R., 1981. Geology and mining history of the Kings Mountain belt—A summary and status report, In Horton, J.W., Jr., Butler, J.R., and Milton, D.J., eds., pp. p. 194-212. Geological investigations of the Kings Mountain belt and adjacent areas in the Carolinas. Carolina Geological Society Field Trip Guidebook 1981. Columbia, South Carolina Geological Survey. 247 pp.
- ↑ "Global lithium resources" (PDF). uchile.cl. 2012. Retrieved 2013-07-02.[ permanent dead link ]
- ↑ Bradley, Dwight C.; Stillings, Lisa L.; Jaskula, Brian W.; Munk, LeeAnn; McCauley, Andrew D. (2017). Lithium, Chapter K of Critical Mineral Resources of the United States—Economic and Environmental Geology and Prospects for Future Supply (PDF) (Report). United States Geological Survey.
- ↑ King, P. B., 1955, A geologic section across the southern Appalachians: An outline of the geology in the segment in Tennessee, North Carolina andSouth Carolina, In Russell, R. J., ed., pp. 332-373. Guides to southeastern geology. Boulder Colorado, Geological Society of America, 616 pp. ISBN 978-1-258-76194-3
- 1 2 3 4 Broadhurst, S. D. , 1956. Lithium resources of North Carolina.North Carolina Division of Mineral Resources Information Circular, 15 , 37 p.
- ↑ Kesler, T.L., 1942. The tin-spodumene belt of the Carolinas: A preliminary report.U.S. Geological Survey Bulletin 936-J, pp. 249-269.
- ↑ Banks, M.K., McDaniel, W.T., and Sales, P.N., 1953. A Method For Concentration of North Carolina Spodumene Ores.Mining Engineering (AIME), 1953, 181–186.
- 1 2 Cardarelli, F., 2018. Less Common Nonferrous Metals. In: Cardarelli, F., ed., pp. 317-432. Materials handbook : a concise desktop reference, 2nd ed. Berlin, Germany, Springer International Publishing AG. 2254 pp. ISBN 978-3-319-38923-3
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