Color blue, blue-green Streak light blue | Mohs scale hardness 6 | |
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Category Amphibole - Inosilicates Formula
(repeating unit) Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 | ||
Crossite is an inosilicate double chain sodic amphibole and is a rare silicate mineral belonging to the riebeckite group. It is considered an intermediate between the amphiboles glaucophane and magnesioriebeckite, which form a series. IMA status: discredited 1997.
Crossite is named after Charles Whitman Cross, an American USGS petrologist.
References
Crossite Wikipedia(Text) CC BY-SA