Tephroite

Tephroite is the manganese endmember of the olivine group of nesosilicate minerals with the formula Mn2SiO4. A solid solution series exists between tephroite and its analogues, the group endmembers fayalite and forsterite. Divalent iron or magnesium may readily replace manganese in the olivine crystal structure. It was first described for an occur...
Found on http://en.wikipedia.org/wiki/Tephroite

Tephroite

• (n.) A silicate of manganese of an ash-gray color.
Found on http://thinkexist.com/dictionary/meaning/tephroite/

Tephroite

Teph'ro·ite noun [ See Tephrosia .] (Min.) A silicate of manganese of an ash-gray color.
Found on http://www.encyclo.co.uk/webster/T/28

Tephroite

Manganese(II) orthosilicate
Found on http://www.translationdirectory.com/glossaries/glossary075.htm

tephroite

olivine mineral found only in iron-manganese ore deposits and skarns and in metamorphosed manganese-rich sediments, such as those of Cornwall, Eng., ... [2 related articles]
Found on http://www.britannica.com/eb/a-z/t/26

Tephroite

Tephroite is an ash-grey coloured silicate of manganese.
Found on http://www.probertencyclopaedia.com/browse/HT.HTM
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