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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

The chemical formula of Chengdeite is indicated by Ir3Fe or Iridium Iron. Chengdeite actually belongs to the Native Elements mineral class. The name Chengdeite was actually derived from its locality, the Chengde County in China. Chengdeite mineral was first discovered in this placer deposits in the early year 1990s. Mineral Chengdeite is commonly used as mineral specimen and it is also considered as a very minor ore of iridium. Chengdeite minerals are known to crystallize in the isometric system of crystal formation. In optical mineralogy, this isometric system comprises crystals having three axes, all of which are perpendicular to one another and all are found equal in lengths.


            Chengdeite mineral, despite the fact that it is a compound as its chemical reality, belongs to the classification as an element. They are actually alloy minerals with metallic bonding, which are found very similar to those elements with more pure metallic elements. This is the reason why Chengdeite minerals are classified as elements. Chengdeite is actually new to the mineral world and it is a considerably rare species. Chengdeite is only one of those known most dense minerals. When the density of Chengdeite is compared to gold and platinum, it can be found that gold is actually about 9 percent lighter while platinum is found to be slightly better at 18 grams per cubic centimeters. In fact, Chengdeite can only be beat out by other minerals that contain more iridium and/or osmium in their chemical composition. To be specific, these minerals are the minerals iridium, osmium and iridosmine, which is an alloy of iridium or osmium. Iridium is probably the densest element known to man besides osmium, which is probably next in line whose density is close enough to make the distinction a bit difficult. Lead is thought to be the densest but at its 11.37 grams per cubic centimeters density measure, it can be noticed that it is barely halfway in the density range when compared to Chengdeite mineral.


Chengdeite minerals are commonly found in black color when mineral is closely evaluated in reflected light of petrographic polarizing microscopes used in optical mineralogy. Chengdeite is also most commonly found exhibiting metallic luster when specimen is closely evaluated in reflected light of polarized microscopes used in the field of optical mineralogy. Chengdeite has absent cleavage even when closely evaluated between crossed nicols of petrographic polarizing light microscope for mineralogists. Chengdeite is also most commonly found showing hackly fracture when mineral specimen is closely examined under several adjustments on the aperture diaphragm of the polarizing microscope for mineralogists. In the field of optical mineralogy, hackly fracture shows jagged and torn surfaces like a fractured metal when examined with the aid of petrographic polarizing light microscopes. The specific gravity measure of the mineral usually gives a value of 19.3 grams per cubic centimeters, which is considered as well above average, even for a metallic mineral. The hardness measure of mineral Chengdeite when it is evaluated using the Mohs scale method is commonly found 5. Chengdeite mineral specimen plate is most commonly found leaving a black streak when rubbed on a white porcelain streak plate.


Chengdeite mineral crystals are commonly found opaque in appearance. The crystal habit of mineral species Chengdeite usually includes nuggets, which are commonly exhibiting a nice and interesting microscope image under a geological microscope. These Chengdeite crystal nuggets are commonly found in placer deposits. Chengdeite is also a non-magnetic mineral. In optical mineralogy, Chengdeite is known as an isotropic mineral and this can be seen more clearly exhibited when specimen is closely viewed with the aid of petrographic polarizing microscopes for mineralogists. Chengdeite mineral specimen is also malleable. Chengdeite is also a non-pleochroic materials when viewed with the aid of a polarizing light microscope used in optical mineralogy. There is also no dispersion display found for Chengdeite mineral when it is evaluated with the aid of petrographic polarizing microscopes used in optical mineralogy. There is no specific data on the toxicity and health dangers for this mineral Chengdeite. However, the specimens of this mineral species should be treated with great care and use of sensible precaution is advised upon handling them.


            Mineral Chengdeite is commonly associated with several other interesting minerals like chromite, olivine and some other ultramafic igneous minerals. The best field indicators of mineral Chengdeite usually include color, crystal habit, density and locality. Chengdeite minerals have limited occurrence at some types of localities including the Luan River in the Chengde County in China as well as some few ultramafic igneous rocks deposit. Chengdeite minerals are commonly found as trace minerals in chromite rich ultra mafic igneous deposits.

Monday, February 16th, 2009 at 2:43 am
The Native Elements Mineral Class
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Click Here For Best Selection Of High Quality Polarizing Microscope