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  1. webmineral.comWeb Mineral

    Hace 2 días · Complete, up-to-date, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images.

    • Crystal

      Crystal Groups and Classes - Crystallography groups are...

    • X Ray

      Definition. Powder X-ray Diffraction (XRD) is one of the...

    • Alphabetical Listing|A to Z

      Breakdown of Mineral Species In Webmineral # of Species ....

    • jPOWD

      Aquí nos gustaría mostrarte una descripción, pero el sitio...

    • Chem

      Mineral Search form: 1. To display the listing of minerals...

    • Properties

      Other Sources of Mineral Identification. The "Collectors...

    • Images

      Click on first letter of mineral name under the Index of.....

    • News

      Aquí nos gustaría mostrarte una descripción, pero el sitio...

  2. www.britannica.com › science › basaltBasalt | Definition, Properties, & Facts | Britannica

    Hace 4 días · Basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium. Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts. Learn more about basalt in this article.

  3. geomuseu.upc.edu › index › esEl diamante y sus utilidades – Geomuseu

    Hace 2 días · El diamante y sus utilidades. El mineral más duro que se conoce en la naturaleza se ha utilizado, desde hace muchos años, como piedra preciosa en joyería y cada vez tiene más aplicaciones en el campo de la industria (serrar, pulir, agujerear rocas, hormigón y materiales pétreos) y en la medicina (pequeñas herramientas para ...

  4. www.nature.com › subjects › mineralogyMineralogy - Latest research and news | Nature

    Hace 3 días · Mineralogy is the study of minerals, the building blocks of rocks, which are naturally-occurring, crystalline solids with a set chemical make-up.

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  6. link.springer.com › journal › 126Articles | Mineralium Deposita - Springer

    Hace 4 días · Mineralium Deposita is an authoritative journal specializing in economic geology and mineral deposits. Emphasizes new observations, principles, and ...

  7. www.yahoo.com › news › oil-drilling-mining-blocked-southeast-105612585Oil drilling, mining blocked from southeast New Mexico cave...

    Hace 1 día · An area of Lincoln National Forest known for a complex cave system was protected from oil and gas drilling and other mineral extraction, with the block on development extending for 20 years.

  8. www.usgs.gov › index › centersCritical Minerals in Alaska Placer Deposits and Southeast Alaska...

    Hace 5 días · Identify critical mineral concentrations and volumes in selected placer deposits in each of the major mineral systems in Alaska (fig. 1). Determine the enrichment of critical elements in placer tailings relative to that of unprocessed stream gravels.