Minerals identify

Know how to recognize them

Wyartite

Carbonate mineral

Wyartite CaU5+ (UO 2) 2(CO 3)O 4(OH)·7H2O is a uranium named after Jean Wyart , Paris. It has greenish-black, black, or violet-black, translucent to opaque orthorhombic crystals. A hardness of 3 - 4 Mohs. Its other names are Ianthinite (of Bignand), Wyartit and Wyartita. It belongs to the uranium carbonate group of minerals. It is found next to rutherfordine , Shaba

Determination of the structure of wyartite provided the first evidence for a pentavalent uranium mineral. Like all uranium minerals it is radioactive.

Identification

Color of mineral

Black
Violet

Luster ( interacts light )

Vitreous
Metallic
Dull

Crystal ( diaphaneity )

Orthorhombic

Radioactive

Radioactive