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The chemical formua of mineral Chiluite is indicated by Bi6Te2Mo2O21. Chiluite is usually found occuring at Molybdenite deposit. This mineral is usually found from its type of locality at Chilu, Fujian, China. Mineral Chiluite was named after the locality. Chiluite is also known to crystallize in the hexagonal system of crystal formation. In optical mineralogy, the hexagonal system of crystallization comprises crystals having four axes. Three of which are positioned in a single plane with equal length and are symmetrically spaced. The fourth axis is found to be perpendicular to the other three axes. Mineral Chiluite is usually found colored yellow in hand sample. The density measure of mineral Chiluite is usually found 3.65 grams per cubic centimeters. Most crystals of mineral Chiluite are found semitransparent in appearance. The crystal habit of mineral Chiluite as described in the field of optical mineralogy usually includes anhedral grain which occurs as granular minerals without the expression of crystal shapes. It can be also found hexagonal in form with six-sided crystal shape in cross-section or habit. It can be also found plumose or “Mica-like” minerals forming aggregates of plume-like forms. The hardness measure of mineral Chiluite is usually found 3 when evaluated using the Mohs scale method. Mineral Chiluite is also found showing submetallic luster in reflected light of polarizing microscopes. Chiluite is also found showing uniaxial negative figure with 0.1000 birefringence when evaluated between crossed nicols of polarized microscopes. Chiluite is also found weakly anisotrophic. Chiluite is also found exhibiting gray color with gray-brown internal reflections. Mineral Chiluite is also found to be not radioactive.



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Thursday, June 30th, 2011 at 3:15 am
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Optical Mineralogy
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