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Name: |
molybdenite |
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Class: |
Sulfides |
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Chemistry: |
MoS2 Molybdenum Sulfide |
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Color(s): |
lead-gray, metallic |
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Hardness: |
1 - 1.5 |
SpecGrav: |
4.6 - 5.1 |
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Fracture: |
none |
Cleavage: |
perfect |
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Crystal: |
hexagonal (flat tabular plates common, scales, foliated masses) |
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Envronment: |
in quartz veins and pegmatites, hypothermal veins, and hydrothermal veins, and some metamorphic rocks. |
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Association: |
quartz, wolframite, cassiterite, sphalerite, pyrite, magnetite |
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Locals: |
| Colorado, New Jersey, USA | Canada | England | Sweden | USSR | Austrailia | |
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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. |
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Photos |
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