• Mineral - Wikipedia

    Definition Basic definition. One definition of a mineral encompasses the following criteria: Formed by a natural process (anthropogenic compounds are excluded).

  • Mineral Identification Key Streak

    The Mineral Identification Key Streak is simply the color of a mineral powder. Many ... Some geologists use a steel file to test the streak of minerals with a ...

  • Mineral Identification | Mineralogy4Kids

    Determine the hardness of your mineral. Using a glass plate, see if the mineral scratches it. Be careful, making sure the glass is on a table. ... Mineral Identification.