Minerals identify

Know how to recognize them

Playfairite

Sulfosalt mineral

Playfairite is a rare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system named after the Scottish scientist and mathematician John Playfair It was discovered in 1966 by the Canadian mineralogist John Leslie Jambor Lead gray to black in color, its luster is metallic. Playfairite shows strong reflection pleochroism from white to brownish gray. Playfairite has a hardness of 3.5 to 4 on Mohs scale and a specific gravity

The type locality is Taylor Pit (Concession XIV; Lot 13), Huntingdon Township , Hastings County in Ontario Small deposits have also been found in Les Cougnasses Mine, Orpierre in the Haut-Alpes , Khaidarkan Sb-Hg deposit (Chaidarkan), Fergana Valley , Alai Range, Osh Oblast and Reese River District, Lander County

Identification

Color of mineral

Grey
Black

Mohs scale ( mineral hardness )

3.5
4

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Monoclinic