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List Of Minerals Recognized By The International Mineralogical Association (O)
__TOC__ O # Oberthürite (IMA2017-072) 2. o o# Oberwolfachite (alunite: IMA2021-010 o o# Oboyerite (tellurite-tellurium oxysalt: IMA1979-009) 4.JN.2 (IUPAC: hexahydrogen hexalead tritellurate(IV) dihexaoxotellurate(VI) dihydrate) # Obradovicite (heteropolymolybdate, betpakdalite) 7.GB.40 ##Obradovicite-KCu (IMA2010-E, IMA1978-061) 7.GB.4 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldhamite
Oldhamite is a calcium magnesium sulfide mineral with the chemical formula . Ferrous iron may also be present in the mineral resulting in the chemical formula . It is a pale to dark brown accessory mineral in meteorites. It crystallizes in the cubic crystal system, but typically occurs as Euhedral and anhedral, anhedral grains between other minerals. Discovery and occurrence It was first described in 1862 for an occurrence in the Bustee meteorite, Gorakhpur, Uttar Pradesh, India. It was named for Irish geologist Thomas Oldham (1816–1878), the Director of the Indian Geological Survey. It occurs as an interstitial mineral phase between silicate minerals in enstatite chondrite and achondrite meteorites. It occurs in association with enstatite, augite, niningerite, osbornite, troilite, gypsum and calcite. It has been reported from a variety of meteorite locations around the world including the Allan Hills 84001 meteorite of Antarctica. It has also been reported from a slag occurren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Okenite
Okenite (CaSi2O5·2H2O) is a silicate mineral that is usually associated with zeolites. It most commonly is found as small white "cotton ball" formations within basalt geodes. These formations are clusters of straight, radiating, fibrous crystals that are both bendable and fragile. It also belongs to the family of the calcium silicate hydrates (C-S-H) commonly found in hardened cement paste. In cement chemist notation (CCN) it is noted as CaO·2SiO2·2H2O and abbreviated as CS2H2. Discovery and occurrence It was first described in 1828 for an occurrence at Disko Island, Greenland and named for German naturalist Lorenz Oken (1779–1851). Minerals associated with okenite include apophyllite, gyrolite, prehnite, chalcedony, goosecreekite and many of the mother zeolites. Okenite is found in India, mainly within the state of Maharashtra. Other localities include Bulla Island, Azerbaijan; Aranga, New Zealand; Chile; Ireland and Bordo Island in the Faroe Islands. See also * List of m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
