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


Download Google Earth Free
Free Google Earth software allows you to browse seamless world satellite images. Free.
Plate Tectoncs
Zoom in on Plate Boundaries: See the details of plate tectonics in satellite view.
Diamonds
Diamonds: Learn about the properties of diamond, its many uses and diamond discoveries.
Gold
Gold - An important metal for thousands of years - uses, prospecting, mining, production.
Opal
Pictures of Opal: A collection of different types of opal from all around the world and Mars too!
The Acid Test
The Acid Test: Geologists use dilute hydrochloric acid to identify carbonate minerals.
Red Beryl
Red Beryl is one of the rarest gems. Small amounts are mined at one locality in Utah.
Homeowners Insurance
Homeowners Insurance usually does not cover the most common geologic hazards.


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
  Diamond
  Calcite
  Topaz
  Mineral collectors
  Rock, Mineral and Fossil Collections.
  Quartz
  Corundum
  Diopside






© 2005-2017 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.