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The original rock from which Gneiss formed is- (a) limestone(b) shale(c) granite(d) quartzite |
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Answer» its metamorphic rockExplanation:The light coloured CRYSTALS in gneiss are usually quartz or feldspar, the DARK coloured crystals are mafic minerals. How was it FORMED? Gneiss is formed from ANOTHER metamorphic rock called schist, which itself STARTED out life as a sedimentary rock called shale |
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