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tantalite |
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tantalite [′tant·əl‚līt] (mineralogy) (Fe,Mn)Ta2O6An iron-black mineral that crystallizes in the orthorhombic system and commonly occurs in short prismatic crystals; luster is submetallic, hardness is 6 on Mohs scale, and specific gravity is 7.95; principal ore of tantalum. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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By now suspecting they were seeing positrons from some unexpected source, the experimenters tried thorium against tantulum to produce a supernucleus with charge 163, well below the theoretical threshold for producing positrons from the vacuum. |
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