Difference between revisions of "Mineral"

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(Mineral definition)
 
 
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Natural materials that are [[inorganic]] and [[crystalline]].  These are formed within the earth or on it's surface by geological processes.   
 
Natural materials that are [[inorganic]] and [[crystalline]].  These are formed within the earth or on it's surface by geological processes.   
  
The term mineral excludes materials of [[organic]] origin, such as pearls, amber and ammolite (??).  It also excludes non-crystalline materials such as glass (how about obsidian and moldovite?? and where does opal fit into this?), and man-made versions of natural minerals, such as synthetic sapphire, synthetic emerald, cubic zirconia and the like.
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The term mineral excludes materials of [[organic]] origin, such as pearls, amber, coral and ammolite.  It also excludes non-crystalline materials such as glass and man-made versions of natural minerals, such as synthetic sapphire, synthetic emerald, cubic zirconia and the like.

Latest revision as of 15:42, 9 March 2006

Natural materials that are inorganic and crystalline. These are formed within the earth or on it's surface by geological processes.

The term mineral excludes materials of organic origin, such as pearls, amber, coral and ammolite. It also excludes non-crystalline materials such as glass and man-made versions of natural minerals, such as synthetic sapphire, synthetic emerald, cubic zirconia and the like.