Minerals identify

Know how to recognize them

Bertrandite

Sorosilicate

Bertrandite is a beryllium hydroxide mineral with composition: Be4Si2O7(OH)2. Bertrandite is a colorless to pale yellow orthorhombic mineral with a hardness of 6-7.

It is commonly found in beryllium rich pegmatites and is in part an alteration of beryl. Bertrandite often occurs as a pseudomorphic replacement of beryl. Associated minerals include beryl, phenakite , muscovite

It, with beryl, are ores of beryllium.

It was discovered near Nantes, France in 1883 and named after French , Emile Bertrand

One of the world's largest deposits of bertrandite is Spor Mountain, Thomas Range , Utah which is currently the source of most of the world's beryllium production.

Identification

Color of mineral

Yellow

Mohs scale ( mineral hardness )

6

Density ( specific gravity )

1.591
1.605
1.614

Luster ( interacts light )

Vitreous
Pearly

Crystal ( diaphaneity )

Orthorhombic