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Molybdenite

Image: <bdi><a href="https://www.wikidata.org/wiki/Q56247090" class="extiw" title="d:Q56247090"><span title="mineral collector and dealer">Robert M. Lavinsky</span></a></bdi> (CC BY-SA 3.0)

hexagonaluncommonSulfides

Molybdenite

MoS2

This specimen features lustrous, silvery-gray, flaky crystals with a distinct metallic luster, often forming stacked hexagonal plates. It has a characteristic soft, greasy feel.

Molybdenite Physical Properties

Mohs Hardness

1

Crystal System

hexagonal

Luster

metallic

Streak Color

bluish-gray to greenish-gray

Cleavage

perfect basal (one direction)

Fracture

uneven

Specific Gravity

4.65

Colors

lead-gray, bluish-gray, silvery-white

Transparency

opaque

Type Locality

Wolfram Camp, Dimbulah, Mareeba Shire, Queensland, Australia

Mineral Group

Sulfides

Uses

ore of molybdenum, lubricant, catalyst, semiconductor research

Associated Minerals

quartz, fluorite, scheelite, wolframite, chalcopyrite, pyrite

Rarity

uncommon

Geological Context

Molybdenite commonly forms in high-temperature hydrothermal veins, contact metamorphic deposits, and porphyry molybdenum deposits, typically associated with granitic intrusions. It is the primary ore mineral for molybdenum.