Minerals identify

Know how to recognize them

Clinohumite

Nesosilicate

Clinohumite is an uncommon member of the humite group according to the chemical formula , Fe )2. The formula can be thought of as four olivine (Mg2SiO4), plus one brucite (Mg(OH)2). Indeed, the mineral is essentially a hydrated olivine and occurs in altered ultramafic rocks and carbonatites. Most commonly found as tiny indistinct grains, large euhedral clinohumite crystals are sought by collectors and occasionally fashioned into bright, yellow-orange gemstones. Only two sources of gem-quality material are known: the Pamir Mountains , and the Taymyr. It is one of two humite group minerals that have been cut into gems, the other being the much more common chondrodite.

Identification

Color of mineral

Brown
Orange
Yellow
Red

Mohs scale ( mineral hardness )

6

Density ( specific gravity )

1.623
1.636
1.651

Luster ( interacts light )

Resinous
Vitreous

Crystal ( diaphaneity )

Monoclinic