Minerals identify

Know how to recognize them

Tusionite

Borate mineral

Tusionite is a rare colorless to transparent to translucent yellow brown trigonal with chemical formula : MnSn(BO3)2. The mineral is composed of 18.86% manganese , and 32.96% oxygen mineral and occurs rarely in granite in miarolitic cavities.

Tusionite was named for the location where the mineral was first discovered and described in 1983 in the Tusion River Valley in the Pamir Mountains. Tusionite has also been reported from Recice and in pegmatites at Thomas Mountain, Riverside County, California.

Identification

Color of mineral

Brown
Yellow

Mohs scale ( mineral hardness )

5
6

The streak

White

Density ( specific gravity )

1.854
1.752

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Trigonal