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礦物之美-(藍錐礦∼BENITOITE)
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BENITOITE BaTiSi3O9 (hexagonal). Stubby,prismatic,dipyramidal crystals,shades of blue. San Benito County, California. 藍錐礦為相當稀有的礦,全世界僅在美國加州 SAN BENITO COUNTY地區發現,也以 此為其礦名.淡藍色,硬度 6.5,其特有的雙錐面晶形為礦物界中少見!形成於蛇紋岩的裂隙∼serpentine rock ,由熱水作用產生.屬高評價 之礦.常與 serpentine, neptunite, natrolite and joaquinite共生. |
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