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  • ktmatuAll-In-One Page CEDICT Chinese-English

    All-In-One Page CEDICT Chinese to English dictionary in traditional Chinese contains 27085 entries, and can be easily viewed and searched both online and offline without external programs. Home

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  • BauxiteWikipedia

    Bauxite, an aluminium ore, is the world's main source of aluminium. It consists mostly of the minerals gibbsite (Al(OH) 3), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite and haematite, the clay mineral

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  • ColtanWikipedia

    Coltan (short for columbitetantalite and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium's

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  • Excalibur Mineral CorporationCurrent List

    Excalibur Mineral Corporation is a complete mineralogist's heaven! Excellent quality mineral specimens, microscopes, UV lamps, Photographic Guide to Mineral Species on CD-ROM, mineral models, and an analytical lab with SEM

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  • HomeThe Russian Stone

    Denver Gem Show 2017 Review 31th October 3920 by Mike Petrov A little bit late, but here is a review with some pictures from the Denver gem and mineral show, September 2017 Read Full Article

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  • Journal of weekly news and commentaries about rocks

    lc John BettsFine Minerals, New York, NY Dealers of Fine Minerals and Natural Crystal Clusters since 1989. Journal of weekly news and commentaries about rocks and minerals and mineral collectingJohn Betts' Mineral Blog

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