lepidolite

Noun
  1. A mineral of the mica group;
    An important source of lithium (synset 114704422)
    is a type of: isinglass, mica - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
    substance holonym:
    • atomic number 3, li, lithium - a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
    • atomic number 37, rb, rubidium - a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite

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