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English: Jacobsite Locality: N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa (Locality at mindat.org) Size: miniature, 3.8 x 3.5 x 3.2 cm
The Postmasburg Manganese Field's (PMF) history began with early geological mapping in 1930 and local prospecting in 1940s. [1] Systematic exploration in the 1950s led to discoveries at Gloria mine (1953), Nchwaning mine (1955), Mamatwan mine (1957), and Wessels mine (1958). Mining commenced with Gloria Mine in 1957, followed by Nchwaning in ...
The Artillery Peak mine is a mine located in the western United States, about 3 miles (4.8 km) north of Alamo Lake in Mohave County, Arizona.Artillery Peak represents one of the largest manganese reserves in the United States, with estimated reserves of 159 million tons of manganese ore graded 3.9% manganese metal.
Jacobsite is a manganese iron oxide mineral. It is in the spinel group and forms a solid solution series with magnetite. The chemical formula is (Mn,Mg)Fe 2 O 4 or with oxidation states and substitutions: (Mn 2+,Fe 2+,Mg)(Fe 3+,Mn 3+) 2 O 4. [2] [4] Jacobsite, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South ...
Alamo Crossing is a ghost town in Mohave County, Arizona, United States. The town was settled in the late 1890s, in what was then the Arizona Territory. It served as a camp for mining prospectors in the manganese-rich Artillery Mountains, being the only town in the area. After 1918, the post office permanently closed, but the town was only ...
Ramsdellite (Mn 4+ O 2) is an orthorhombic manganese dioxide mineral. It is relatively uncommon, and is usually found in deposits containing other manganese oxide crystals. It is relatively uncommon, and is usually found in deposits containing other manganese oxide crystals.
The town's occupants largely worked at Reymert Mine, until work there stopped in the 1950s. Originally a silver mine, later a silver-manganese mine, it was located approximately five miles southwest of Superior. A Phoenix-based company bulldozed the remnants of the town in the late 1970s. The remains of two processing kilns still exist, as well ...
Mineral resources of the Artillery Mountains include manganese, uranium and gold. Rocher Deboule Minerals drilled their Artillery Mountains Manganese property in 2008, and discovered a resource of 2,553,000 tonnes of 3.82% Mn. [1] High Desert Gold acquired the Artillery Peak gold project in western Arizona in 2008. [2]