tephroite


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tephroite

[′tef·rō‚īt]
(mineralogy)
Mn2SiO4 An olivine mineral that occurs with zinc and manganese minerals.
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References in periodicals archive ?
Iron- and manganese oxides will react with the silica component of the mullite to form fayalite and tephroite, respectively.
Unfortunately, the silicate portion is affected by iron- and manganese oxides in a way similar to that which a silica-based refractory is affected, forming low temperature fayalite or tephroite.
The Val Graveglia manganese mines have produced some rare and uncommon species (bementite, ganophyllite, sarkinite, sussexite, tephroite etc.
It occurred very sparingly at the surface of cavities and fractures in a manganese ore containing tephroite, bementite, braunite, hausmannite and hematite.
The Gambatesa mine produced some specimens of pale amethyst quartz associated with tephroite and hausmannite.
Sussexite fills thin fractures and is associated with calcite, tephroite, rhodochrosite, sarkinite and reppiaite (Cortesogno et al.
The standards used were Marjalahti olivine for Mg, kyanite for Al, synthetic fayalite for Fe, and synthetic tephroite for Mn.