Crossite | |
Category: | Amphibole – Inosilicates |
Formula: | Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 |
Color: | blue, blue-green |
Mohs: | 6 |
Streak: | light blue |
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.[1] IMA status: discredited 1997.
Crossite is named after Charles Whitman Cross, an American USGS petrologist.