Minerals identify

Know how to recognize them

Satinspar

Sulfate mineral

Selenite, satin spar, desert rose , gypsum flower are crystal habit.

All varieties of gypsum, including selenite and alabaster , are composed of calcium sulfate dihydrate (meaning that it has two molecules of water), with the chemical formula CaSO4·2H2O. Selenite contains no significant selenium , the similarity of the names of the substances coming from the Ancient Greek word for the Moon.

Some of the largest crystals ever found are of selenite, the largest specimen found in the Naica Mine 's Cave of the Crystals being 12 metres long and weighing 55 tons.

Identification

Color of mineral

Brown
Green
Yellow
Grey
White

Mohs scale ( mineral hardness )

2

The streak

White

Density ( specific gravity )

1.519
1.522
1.529

Luster ( interacts light )

Pearly

Crystal ( diaphaneity )

Monoclinic