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Priceite |
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priceite [′prī‚sīt]
(mineralogy) Ca4B10O19ยท7H2O A snow-white earthy mineral composed of hydrous calcium borate, occurring as a massive. Also known as pandermite. Priceite (also pandermite), a hydrous borate mineral having the chemical composition Ca2[B4BO7(OH)5] · H2O. It crystallizes in the monoclinic system and forms dense, cryptocrystalline, snow white chalky masses and nodules, as well as powdery aggregates of very tiny crystals. It has a hardness of 3.5 on Mohs’ scale and an approximate density of 2,430 kg/m3. Priceite, in association with other borates, occurs in saliferous and gypsiferous strata that have formed through the accumulation of chemical residue in salt-boron lakes in arid regions. Priceite is found in the Kazakh SSR, California, and northern Turkey. It serves as raw material in the extraction of boron and boron compounds. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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