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The chemical formula of mineral Earlandite is indicated by Ca3(C6H5O7)•4(H2O). This mineral is most commonly found as ocean bottom sample at 2, 580 meters. Earlandite is commonly found at its type of locality at Weddell sea, Antarctica. Earlandite was named for Arthur Earland, English oceanographer. Earlandite is known to crystallize in the monoclinic system of crystal formation. Mineral Earlandite is commonly found white or light yellow in color when evaluated in reflected light of polarizing microscopes. The specific gravity measure of mineral Earlandite is usually found 1.95 grams per cubic centimeters. The crystal habit of mineral Earlandite is usually found nodular in form showing tuberose forms having irregular protuberances over the surface. Earlandite is commonly found leaving a white streak when rubbed on white porcelain streak plate. Earlandite is commonly found showing biaxial positive figure when evaluated between crossed nicols of polarizing microscopes. It is also commonly found showing 0.0600 birefringence. Earlandite is usually found non-radioactive after chemical evaluation.



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Monday, January 31st, 2011 at 7:49 am
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Optical Mineralogy
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