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Kassite (mineral)
Kassite is a rare mineral whose chemical formula is CaTi2O4(OH)2. It crystallizes in the orthorhombic crystal system and forms radiating rosettes and pseudo-hexagonal tabular crystals which are commonly Crystal twinning, twinned. Kassite crystals are brownish pink to pale yellow in color, are translucent, and have an adamantine luster. Cleavage is distinctly visible, and the crystals are very brittle. It was first described in 1965 in the Afrikanda pyroxenite massif, a formation on Russia's Kola Peninsula and was named for Nikolai Grigorievich Kassin (1885–1949), a prominent Russian geologist. It occurs as miarolitic, miarolytic cavity fillings of alkalic pegmatites in the Kola occurrence and in nepheline syenite in the Magnet Cove igneous complex of Arkansas, US. Its mineral association includes cafetite (which with it is also polymorphous), perovskite, titanite, rutile and ilmenite. References Oxide minerals Monoclinic minerals Minerals in space group 14 {{oxide-miner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cafetite
Cafetite is a rare titanium oxide mineral with formula ·. It is named for its composition, Ca-Fe-Ti. It was first described in 1959 for an occurrence in the Afrikanda Massif, Afrikanda (rural locality), Afrikanda, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia. It is also reported from the Khibiny Massif, Khibiny and Kovdor Massif, Kovdor massifs of the Kola Peninsula and from Meagher County, Montana, US. It occurs in pegmatites in a pyroxenite intrusion as crystals in Miarolitic cavity, miarolitic cavities. It occurs associated with ilmenite, titaniferous magnetite, titanite, anatase, perovskite, baddeleyite, phlogopite, Chlorite group, clinochlore and Kassite (mineral), kassite. References Oxide minerals Titanium minerals Monoclinic minerals Minerals in space group 14 {{oxide-mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |