Name:

molybdenite

A photo of the mineral molybdenite

Class:

Sulfides

Chemistry:

MoS2 Molybdenum Sulfide

Color(s):

lead-gray, metallic

Hardness:

1 - 1.5

SpecGrav:

4.6 - 5.1

Fracture:

none

Cleavage:

perfect

Crystal:

hexagonal (flat tabular plates common, scales, foliated masses)

Envronment:

in quartz veins and pegmatites, hypothermal veins, and hydrothermal veins, and some metamorphic rocks.

Association:

quartz, wolframite, cassiterite, sphalerite, pyrite, magnetite

Locals:

| Colorado, New Jersey, USA | Canada | England | Sweden | USSR | Austrailia |

Misc:

The name comes from the Greek "molybdos", meaning "lead". Soluble in HNO3 and aqua-regia. It feels greasy to the touch and has been used as a powdered lubricant.

Photos
& Locals:

1.) Molly Hill, Quebec, Canada

2.) Molly Hill, Quebec, Canada

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