Ishita Das posted an Question
November 08, 2020 • 01:35 am 30 points
  • IIT JAM
  • Geology (GG)

2 of the following, pick the mineral that is not associated with pegmatites (a) mica (b) emerald mtwn (c) feldspar (d) kyanite

2 Of the following, pick the mineral that is not associated with pegmatites (A) Mica (B) Emerald Mtwn (C) Feldspar (D) Kyanite

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    Sajan sarthak Best Answer

    the pegmatites consist of the feldspars, quartz, and muscovite with local concentrations of accessory minerals such as beryl , spodumene , tourmaline , columbite -tantalite, triphylite-lithiophilite, amblygonite , and minor sulfides and arsenides. Emrald is a variety of Beryl. KYANITE is a high pressure metamorphic meineral where as pegmatite is a hydrothermal solution origin rock .,which has Large grains in it .. Option D is not associated with pegmatite

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