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The chemical formula of mineral Clearcreekite is indicated by Hg+3(CO3)(OH)•2(H2O). Mineral Clearcreekite is usually found forming magnesite-quartz boulder in the prospect pit. Mineral Clearcreekite is a polymorph of peterbaylissite. Mineral Clearcreekite is commonly found forming at its type of locality at the prospect pit near the former Clear Creek mercury mine, New Idria district, San Benito County, California, USA. Mineral Clearcreekite was named for the locality. Clearcreekite is known to crystallize in the monoclinic system of crystal formation. In optical mineralogy, the monoclinic system of crystal formation comprises crystals having three axes of unequal lengths. Two of which are usually found in a position that is oblique or not perpendicular to one another. However, both of which are commonly found perpendicular to the third axis. Mineral Clearcreekite is usually found showing good cleavage when evaluated closely with the aid of polarized microscopes used in the field of optical mineralogy. Mineral Clearcreekite is commonly found pale greenish yellow in hand sample. Most crystals of mineral Clearcreekite are found transparent in appearance. Mineral Clearcreekite is usually found showing brittle to uneven fracture. This is a very brittle fracture producing uneven fragments. The crystal habit of mineral Clearcreekite as described in the field of optical mineralogy usually includes subhedral crystals occuring as crystals which tend to exhibit a recognizable crystal shape. Mineral Clearcreekite is also commonly found showing tabular form showing dimensions that are thin in one direction. Mineral Clearcreekite is usually found showing vitreous or glassy luster in reflected light of polarizing microscopes. Mineral Clearcreekite is also most commonly found leaving a pale greenish yellow streak when rubbed on white porcelain streak plate. Mineral Clearcreekite is also commonly found showing biaxial figure when evaluated between crossed nicols of polarizing microscopes. Mineral Clearcreekite is also found to be not radioactive.



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Friday, July 29th, 2011 at 3:31 pm
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Optical Mineralogy
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