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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Emmonsite is indicated by Fe2(TeO3)3 – 2H2O or Hydrated Iron Tellurite. Emmonsite is actually a Sulfate mineral. Emmonsite was first discovered in the year 1885 at its type of locality at Tombstone, Arizona, USA. The mineral species Emmonsite was named after Samuel F. Emmons, an economist geologist for the United States Geological Survey. Mineral Emmonsite is known to crystallize in the triclinic system. In optical mineralogy, this triclinic crystal system commonly comprises crystals having three axes, of which all are unequal in length and are positioned oblique to one another.

 

Emmonsite is only one of the few tellurium minerals known in the mineral world. Mineral Emmonsite is usually found forming crystals that can form attractive and interesting green micro mountable specimens when evaluated with the aid of polarizing light microscopes for mineralogists. Emmonsite is considered as a very minor ore of tellurium and it is commonly found exhibiting a fascinating microscope appearance when viewed under petrographic polarizing microscope. Emmonsite is also commonly used as mineral specimen and it is most often found showing a fascinating and wonderful microscope images when viewed with the aid of polarizing light microscopes used in optical mineralogy. Emmonsite has been known as durdenite.

 

            Emmonsite is also commonly found showing yellowish green color under petrographic polarizing light microscopes used in optical mineralogy. Emmonsite is most commonly found exhibiting a vitreous to dull luster when viewed in reflected light of polarized microscopes for mineralogists. Emmonsite is also usually found showing a perfect cleavage in one direction when it is closely evaluated with the aid of petrographic polarizing microscope for geologists. The specific gravity measure of the mineral usually gives an approximate value ranging from 4.5 grams per cubic centimeters to 4.7 grams per cubic centimeters, which is considered rather heavy for translucent minerals. The hardness measure of the mineral Emmonsite when it is evaluated using the Mohs scale method is usually found 5. Emmonsite is most commonly found leaving a pale green streak when it is rubbed on a white porcelain streak plate.

 

            Most Emmonsite mineral crystals are found translucent to transparent in appearance. The crystal habits of the mineral Emmonsite as described in optical mineralogy field usually include small flaky or prismatic crystals that are commonly found fascinatingly interesting when closely examined with the aid of petrographic polarizing microscopes for mineralogists. Some Emmonsite mineral crystals are found fibrous in appearance, forming radially acicular growths and also scaly druses, all of which are usually interesting when viewed in plane light of polarized light microscope. Emmonsite can be also found in mamillary form and compact masses that can be seen more clearly exhibited when viewed under polarized light microscopes for geologists. Twinning is usually observed in microscopic crystals.

 

            Emmonsite is most commonly found showing a biaxial negative figure when the mineral is closely evaluated under petrographic polarizing light microscope used in optical mineralogy. Emmonsite is most commonly found showing a very high surface relief when it is closely evaluated under several minor adjustments on the aperture diaphragm of the polarizing microscopes for mineralogists. The refractive index of the mineral is commonly found ranging from 1.962 to 2.120 when the mineral is evaluated in plane light of polarizing microscopes. The dispersion displayed by Emmonsite in plane light of polarized microscope is usually found relatively strong. The maximum birefringence of the mineral Emmonsite is commonly found ranging from 0.138 to 0.158. Emmonsite is also found weakly pleochroic when evaluated in plane-polarized light of petrographic polarizing light microscopes. Emmonsite is found readily soluble in strong acid. There is no specific data found on the toxicity and health dangers for mineral Emmonsite. However, the specimens of this mineral should be treated with great care and use of sensible precaution is advised upon handling them. Mineral Emmonsite is not radioactive.

 

            Mineral Emmonsite is commonly associated with other various tellurium minerals like rodalquilarite, schmitterite, mackayite and other tellurates and tellurites. It is also associated with cerussite, native tellurium and quartz. The best field indicators of mineral Emmonsite usually include color, cleavage, locality and density. Emmonsite is actually a secondary mineral formed by the weathering of tellurium bearing minerals. It can be also found in oxidized zones of tellurium-bearing ore bodies. Mineral Emmonsite has limited occurrence in Moctezuma Mine, Moctezuma as well as Sonora in Mexico, Cripple Creek in Colorado, Honduras, Nevada and New Mexico in the United States and the type of locality of Tombstone in Arizona.



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Monday, September 29th, 2008 at 2:45 am
Category:
The Sulfates Mineral Class
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