Minerals identify
Know how to recognize them
Stilpnomelane
Phyllosilicates,smectite group
Stilpnomelane is a phyllosilicate mineral. It has the formula
Stilpnomelane occurs associated with banded iron formations mineral associated with the blueschist facies
It was first described in 1827 for an occurrence in Moravia in the Czech Republic. The name is derived from the Greek
Identification
Color of mineral
Black
Green
Yellow
Bronze
Mohs scale ( mineral hardness )
3
The streak
White
Density ( specific gravity )
1.543
1.576
1.576
Luster ( interacts light )
Dull
Vitreous
Crystal ( diaphaneity )
Triclinic