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  • A Diccionario Técnico de Mineros y Petroleros por

    Este diccionario español contiene 22 000 palabras y frases que han sido seleccionadas cuidadosamente para las industrias extractivas, de explotación minera y ...

  • Basalt Wikipedia

    Basalt (pronounced / b ə ˈ s ɔː l t /, / ˈ b æ s ɒ l t / or / ˈ b æ s ɔː l t /) is a common extrusive igneous rock formed from the rapid cooling of ...

  • Quartz: Quartz mineral information and data. Mindat.org

    Quartz is one of the most common minerals found in the Earth's crust. If pure, quartz forms colorless, transparent and very hard crystals with a glass-like luster. A ...

  • Singular Nouns Starting with A LearnEnglishNow.com

    Singular Nouns Starting with A. Aam (n.) A Dutch and German measure of liquids, varying in different cities, being at Amsterdam about 41 wine gallons, at Antwerp 36 1 ...