Minerals identify

Know how to recognize them

Legrandite

Arsenate mineral

Legrandite is a rare zinc , Zn2(AsO4)(OH)·(H2O).

It is an uncommon secondary mineral in the oxidized zone of arsenic bearing zinc deposits and occurs rarely in granite pegmatite, paradamite, smithsonite, pharmacosiderite , siderite It has been reported from Tsumeb mine in Durango , New Jersey

It was first described in 1934 for an occurrence in the Flor de Peña Mine, Nuevo León , Mexico and named after M. Legrand, a Belgian mining engineer.

Identification

Color of mineral

Yellow

Mohs scale ( mineral hardness )

4.5
5

Density ( specific gravity )

1.675
1.69
1.735

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic