A potassium feldspar that occurs in schists (notably in the Swiss Alps), often with a distinctive opalescence, and is now regarded as a variety of…
单词 | θ7033 |
释义 | the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > orthoclase > varieties (8) adularia1789 A potassium feldspar that occurs in schists (notably in the Swiss Alps), often with a distinctive opalescence, and is now regarded as a variety of… ice-spar1816 A transparent form of feldspar with a glassy lustre, found in lavas from the volcano Vesuvius. necronite1819 A feldspar having an unpleasant odour, said to be a variety of orthoclase. murchisonite1827 A red variety of orthoclase found in Devon, England. rhyacolite1831 A feldspar occurring chiefly as white or colourless crystals in volcanic rocks, subsequently identified with sanidine. Amazon-stone1836 A mineral; a ‘bright verdigris-green and cleavable’ variety of orthoclase, worn as an amulet by the Indians of the Rio Negro. ryakonite1837 Probably a misreading of rhyacolite, n. krablite1844 An impure orthoclase, the crystals enclosing quartz and other minerals. |
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