teineite
Sign in to saveTeineite 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.
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- Teineite displayed at Mining Museum of Akita University 01.jpg
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- Nickel-Strunz 9th edition (updated 2009)
- 4.JM.20
- chemical formula
- Cu²⁺Te⁴⁺O₃·2H₂O
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.JM.20
- IMA Mineral Symbol
- Tei
- Commons category
- Teineite
- Strunz 8th edition (series ID, updated)
- IV/G.02a
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- Occurrence
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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.
== 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. 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.