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- Powellite abstract "Powellite is a calcium molybdate mineral with formula CaMoO4. Powellite crystallizes with tetragonal - dipyramidal crystal structure as transparent adamantine blue, greenish brown, yellow to grey typically anhedral forms. It exhibits distinct cleavage and has a brittle to conchoidal fracture. It has a Mohs hardness of 3.5 to 4 and a specific gravity is 4.25. It forms a solid solution series with scheelite (calcium tungstate, CaWO4). It has refractive index values of nω=1.974 and nε=1.984.Powellite was first described by William Harlow Melville in 1891 for an occurrence in the Peacock Mine, Adams County, Idaho and named for American explorer and geologist, John Wesley Powell (1834–1902).It occurs in hydrothermal ore deposits of molybdenum within the near surface oxidized zones. It also appears as a rare mineral phase in pegmatite, tactite and basalt. Minerals found in association with powellite include molybdenite, ferrimolybdite, stilbite, laumontite and apophyllite.".
- Powellite thumbnail 6666M-powellite1.jpg?width=300.
- Powellite wikiPageID "1302157".
- Powellite wikiPageRevisionID "604119980".
- Powellite birefringence "δ = 0.010".
- Powellite caption "Yellow-honey powellite crystal with colorless needles of scolecite, from Yeola, Nasik, Maharashtra, India".
- Powellite category "Molybdate minerals".
- Powellite cleavage "Indistinct on {011}, {112} and {001}".
- Powellite color "Straw-yellow, greenish yellow, yellow-brown, brown, colorless, may show blue to black zones".
- Powellite diaphaneity "Transparent".
- Powellite fluorescence "Fluoresces bright yellow under shortwave ultraviolet light, dimmer under longwave".
- Powellite formula "CaMoO4".
- Powellite fracture "Conchoidal".
- Powellite gravity "4.25".
- Powellite habit "Flat tabular crystals often paper-thin on {001}, may be crusty to pulverulent or massive".
- Powellite hasPhotoCollection Powellite.
- Powellite luster Lustre_(mineralogy).
- Powellite mohs "3.5".
- Powellite molweight "200.02".
- Powellite name "Powellite".
- Powellite opticalprop "Uniaxial".
- Powellite pleochroism "O = blue; E = green".
- Powellite refractive "nω = 1.974 nε = 1.984".
- Powellite streak "light yellow".
- Powellite strunz "7".
- Powellite symmetry Hermann%E2%80%93Mauguin_notation.
- Powellite symmetry "Space group: I 41/a".
- Powellite symmetry "Tetragonal dipyramidal".
- Powellite system Tetragonal_crystal_system.
- Powellite unitCell "a = 5.222 Å, c = 11.425 Å; Z=2".
- Powellite wordnet_type synset-mineral-noun-1.
- Powellite subject Category:Molybdenum_minerals.
- Powellite subject Category:Oxide_minerals.
- Powellite subject Category:Tetragonal_minerals.
- Powellite type Abstraction100002137.
- Powellite type Material114580897.
- Powellite type Matter100020827.
- Powellite type Mineral114662574.
- Powellite type OxideMinerals.
- Powellite type Part113809207.
- Powellite type PhysicalEntity100001930.
- Powellite type Relation100031921.
- Powellite type Substance100019613.
- Powellite type TetragonalMinerals.
- Powellite type ChemicalSubstance.
- Powellite type Mineral.
- Powellite type ChemicalObject.
- Powellite type Thing.
- Powellite comment "Powellite is a calcium molybdate mineral with formula CaMoO4. Powellite crystallizes with tetragonal - dipyramidal crystal structure as transparent adamantine blue, greenish brown, yellow to grey typically anhedral forms. It exhibits distinct cleavage and has a brittle to conchoidal fracture. It has a Mohs hardness of 3.5 to 4 and a specific gravity is 4.25. It forms a solid solution series with scheelite (calcium tungstate, CaWO4).".
- Powellite label "Powelliet".
- Powellite label "Powellit".
- Powellite label "Powellit".
- Powellite label "Powellita".
- Powellite label "Powellite".
- Powellite label "Powellite".
- Powellite label "Powellite".
- Powellite sameAs Powellit.
- Powellite sameAs Powellita.
- Powellite sameAs Powellite.
- Powellite sameAs Powellite.
- Powellite sameAs Powelliet.
- Powellite sameAs Powellit.
- Powellite sameAs m.04r6lr.
- Powellite sameAs Q2106979.
- Powellite sameAs Q2106979.
- Powellite sameAs Powellite.
- Powellite wasDerivedFrom Powellite?oldid=604119980.
- Powellite depiction 6666M-powellite1.jpg.
- Powellite isPrimaryTopicOf Powellite.
- Powellite name "Powellite".