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The chemical formula of mineral Tellurium is indicated by the chemical symbol Te or Elemental Tellurium. Tellurium is classified under the Elemental mineral class. Native Tellurium is considered as a minor ore of tellurium and it is also most commonly used as mineral specimen. Native Tellurium is a rare mineral. It is most often found with gold and other gold tellurides such as calaverite and sylvanite. The metal tellurium is most commonly used in alloys with other metals. Tellurium actually makes copper and steel more workable metal. Tellurium is also used in blasting caps.

 

            Tellurium is most commonly found tin white often with a muted multi-colored iridescent tarnish that can be more interesting when viewed with the aid of petrographic polarizing microscopes used in the field of optical mineralogy. Tellurium is also most commonly found showing metallic luster when viewed in reflected light of petrographic polarizing microscope used in the field of optical mineralogy. Most crystals of mineral Tellurium are found opaque in appearance. Tellurium is known to crystallize in the trigonal system of crystal formation. The crystal habits of tellurium as described in optical mineralogy usually include prismatic crystals but more commonly massive as vein fillings.

 

            Mineral Tellurium is most commonly showing good prismatic cleavage in three directions and poor basal cleavage in the fourth direction which can be seen more clearly visible when sample is evaluated with the aid of polarized microscopes used in optical mineralogy. Tellurium is also most commonly found showing uneven facture when viewed under polarized microscope for mineralogists. The hardness measure of mineral Tellurium when evaluated using the Mohs scale method is usually found 2 to 2.5. The specific gravity measure of tellurium is usually found 6.1 to 6.3 grams per cubic centimeters, which is unusually heavy even for metallic minerals. Tellurium is most commonly found leaving tin white streak when specimen sample is rubbed on a white porcelain streak plate. The best field indicators of mineral tellurium usually include tarnish, color, density and cleavage. Tellurium notably occurs at several localities including Lincoln County, Nevada, New Mexico and at Cripple Creek, Colorado, USA as well as Romania and Australia.



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Thursday, August 13th, 2009 at 2:16 pm
Category:
The Native Elements Mineral Class
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