Home » Minerals » Molybdenite

Molybdenite


Mineral Properties and Uses



What is Molybdenite?



Molybdenite is a molybdenum sulfide mineral and the leading ore of molybdenum. It occurs as an accessory mineral in some granites and pegmatites. It is also found in some copper porphyry deposits, contact metamorphic rocks and high temperature vein deposits. It is a soft gray mineral that is easily confused with graphite.


Physical Properties of Molybdenite

Chemical Classification sulfide
Color lead gray
Streak bluish gray grayish black
Luster metallic
Diaphaneity opaque
Cleavage perfect
Mohs Hardness 1 to 2
Specific Gravity 4.6 to 4.8
Diagnostic Properties greasy feel, color, streak, specific gravity
Chemical Composition molybdenum sulfide, MoS2
Crystal System hexagonal
Uses primary ore of molybdenum, specialty libricant


Molybdenite
Molybdenite in quartz from Calaveras County, California. Specimen is approximately 4 inches (10 centimeters) across



Find it on Geology.com




More from Geology.com


Spodumene
Spodumene - an ore of lithium and the mineral of the gems kunzite and hiddenite.
rocks
Rock Gallery: Photos of igneous, sedimentary and metamorphic rocks.
Garnet
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Geology of Gems
Geology of Gems - The first comprehensive book on the geology of gem deposits.
Ant Hill Garnets
Ant Hill Garnets - tiny garnets that ants haul to the surface and discard on their anthill.
What is a Maar?
What is a Maar? The second most common volcanic landscape feature on Earth.
World Globes
World Globes - A nice selection of globes for students, schools, homes and offices.
Metals
Metals are important mineral products used in manufacturing and construction projects.


Molybdenite
Molybdenite from Whitehall, Montana. Specimens are approximately 1/2 inch to 1 inch (1.3 centimeters to 2.5 centimeters) across.




Molybdenite
Molybdenite in quartz from Climax, Colorado. Specimen is approximately 4 inches (10 centimeters) across.


More Minerals
  Mohs Hardness Scale
  Kyanite
  Calcite
  Minerals
  Topaz
  Rock, Mineral and Fossil Collections.
  Diamond
  Corundum






© 2005-2016 Geology.com. All Rights Reserved.
Images, code, and content on this website are property of Geology.com and are protected by copyright law.
Geology.com does not grant permission for any use, republication, or redistribution.
Images, code and content owned by others are marked on the pages where they appear.