Mineral description : Molybdite

Molybdite from Bastnäs. As yellow oxidation products around molybdenite.

Molybdite from Bastnäs. As a yellow crust on a piece of molybdenite.

Mineral class	Oxides : Ockra - Tellurite group.
Chemical formula	MoO3
Crystal system	Orthorhombic
Habitus	As earthy masses or thin surfaces.
Cleavage
Hardness
Density	4.72
Color	Greenish yellow to grayish yellow.
Streak
Luster	Dull.
Description
Occurance	As a secondary mineral created by oxidation of molybdenite.
Associates	Molybdenite
Notes	First publication in 1858 by Greg & Lettsom.
Locations	Relatively rare in Sweden. Bispbergs molybden mine, Säter. As tarnish on molybdenite. Bastnäs, Riddarhyttan, Västmanland. As yellow tarnish and surfaces on molybdite.

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