Teineite

(repeating unit)Cu(TeO3)·2 H2OIMA symbolTei[1]Strunz classification4.JM.20Dana classification34.2.2.2Crystal systemOrthorhombicCrystal classDisphenoidal (222)
H-M symbol: (2 2 2)Space groupP212121Unit cella = 6.63, b = 9.61
c = 7.43 [Å]; Z = 4IdentificationColorSky-blue, cobalt-blue, bluish gray, bright blue to greenish blue in transmitted light.Crystal habitPrismatic or flattened crystals, Sometimes as crusts or aggregatesCleavageDistinctFractureBrittleTenacityBrittleMohs scale hardness2.5LusterVitreous, dullStreakLight blueDiaphaneitySemitransparentSpecific gravity3.8Optical propertiesBiaxial (−)Birefringenceδ = 0.024PleochroismVarious shades of blue2V angle36oFusibilityFusible, gives a black beadSolubilityInsolubleCommon impuritiesSulfurReferences[1][2][3][4]

Teineite is a tellurite mineral with the formula Cu(TeO3). 2 H2O. It has a Mohs hardness of 2.5 and it comes in many different shades of blue, ranging from cerulean blue to bluish-gray. The mineral millsite has the same chemical composition, but crystallizes in the monoclinic system, while teineite crystallizes in the orthorhombic system.[2][3][4]

Occurrence

Teineite was first identified in the Teine mine, Sapporo, Hokkaido, Japan, where the name of this mineral originates. It occurs in veins where copper- and tellurium-bearing sulfides were oxidized and is often associated with tellurite, tellurium, pyrite, tetrahedrite, sphalerite, azurite, malachite, quartz, baryte, hessite, galena, bornite, cerussite, chlorargyrite, quetzalcoatlite, cuprite and graemite.[5][6] It has also been found in other places, including other mines in Japan, several mines in the US and mines in Mexico, Belgium, Russia and Norway.[2][5]

See also

References

  1. ^ 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.
  2. ^ a b "Teineite: Teineite mineral information and data". www.mindat.org. Retrieved 2016-09-19.
  3. ^ "Millsite: Millsite mineral information and data". www.mindat.org. Retrieved 2016-09-19.
  4. ^ Barthelmy, Dave. "Teineite Mineral Data". www.webmineral.com. Retrieved 2016-09-19.
  5. ^ a b "Handbook of mineralogy" (PDF). Retrieved 2016-09-19.
  6. ^ Yosimura, Toyohumi (1936). "Teineite, a New Tellurate Mineral from the Teine Mine, Hokkaidō, Japan" (PDF). Journal of the Faculty of Science, Hokkaido Imperial University. 4. Retrieved 2016-09-19.
  • v
  • t
  • e
Selenites, selenates, tellurites, and tellurates
Selenites 28.1
Ahlfeldite Chalcomenite Clinochalcomenite Cobaltomenite Demesmaekerite Derriksite Francisite Guilleminite Haynesite Mandarinoite Marthozite Molybdomenite Sofiite
Selenates 28.2
Olsacherite Schmiederite
Tellurites 28.3
Balyakinite Blakeite Cesbronite Chekhovichite Choloalite Cliffordite Denningite Emmonsite Eztlite Fairbankite Graemite Keystoneite Kinichilite Mackayite Moctezumite Mroseite Plumbotellurite Poughite Quetzalcoatlite Rajite Rodalquilarite Schmitterite Smirnite Sonoraite Spiroffite Teineite Winstanleyite Zemannite
Tellurates 28.4
Carlfriesite Cheremnykhite Cuzticite Dugganite Girdite Khinite Khinite-3T Kuksite Kuranakhite Montanite Oboyerite Schieffelinite Tlalocite Tlapallite Xocomecatlite Yafsoanite Yecoraite