Akhtenskite is a manganeseoxide mineral with the chemical formula of MnO2 (or: ε-Mn4+O2[4]) that was named after the Akhtensk deposit in Russia, where it was first discovered and noted in 1979.[3] It can be found in the Akhtensk brown ironstone deposit, in the southern Ural Mountains, on Mt. Zarod, on the Sikhote-Alin Mountains, and in the Primorskiy Krai, all in Russia.[2]
Its crystals are usually hexagonal in shape, with flakiness and plating, usually because it replaced a mineral.[2] Akhtenskite is a polymorphous with the much more widespread pyrolusite. It occurs in mixtures with "psilomelane" (recently renamed to romanechite) and with other manganese oxides in an iron oxide deposit, most likely bacterially altered from a previous mineral in the Akhtensk deposit. It also occurs in crusts of ferromanganese minerals on oceanic rocks.[3] Its chemical makeup is 63% oxygen and 37% manganese.
akhtenskite, manganese, oxide, mineral, with, chemical, formula, mno2, that, named, after, akhtensk, deposit, russia, where, first, discovered, noted, 1979, found, akhtensk, brown, ironstone, deposit, southern, ural, mountains, zarod, sikhote, alin, mountains,. Akhtenskite is a manganese oxide mineral with the chemical formula of MnO2 or e Mn4 O2 4 that was named after the Akhtensk deposit in Russia where it was first discovered and noted in 1979 3 It can be found in the Akhtensk brown ironstone deposit in the southern Ural Mountains on Mt Zarod on the Sikhote Alin Mountains and in the Primorskiy Krai all in Russia 2 AkhtenskiteGeneralCategoryOxide mineralFormula repeating unit MnO2IMA symbolAkh 1 Strunz classification4 DB 15bCrystal systemHexagonal Dihexagonal dipyramidal classSpace groupHexagonal H M symbol 6 m 2 m 2 m Space group P63 mmcUnit cella 2 84 c 4 6 A Z 1IdentificationColorLight gray to blackCrystal habitFlaky polycrystalline aggregatesCleavageDistinct on 001 StreakBlackDiaphaneityOpaqueSpecific gravity4 78 calculated Optical propertiesUniaxialReferences 2 3 4 Its crystals are usually hexagonal in shape with flakiness and plating usually because it replaced a mineral 2 Akhtenskite is a polymorphous with the much more widespread pyrolusite It occurs in mixtures with psilomelane recently renamed to romanechite and with other manganese oxides in an iron oxide deposit most likely bacterially altered from a previous mineral in the Akhtensk deposit It also occurs in crusts of ferromanganese minerals on oceanic rocks 3 Its chemical makeup is 63 oxygen and 37 manganese Some minerals that are commonly associated with akhtenskite are todorokite pyrolusite nsutite goethite and cryptomelane 4 References edit nbsp Look up akhtenskite in Wiktionary the free dictionary Warr L N 2021 IMA CNMNC approved mineral symbols Mineralogical Magazine 85 3 291 320 Bibcode 2021MinM 85 291W doi 10 1180 mgm 2021 43 S2CID 235729616 a b c Fact sheet about Akhtenskite PDF Mineral Data Publishing Retrieved 2008 05 04 a b c Akhtenskite data sheet Webmineral com Retrieved 2008 05 04 a b c Jolyon amp Ida Ralph Akhtenskite mineral information and data Mindat org This article about a specific oxide mineral is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Akhtenskite amp oldid 1140189357, wikipedia, wiki, book, books, library,
