| 单词 | pearl spar |
| 释义 | > as lemmaspearl spar pearl spar n. Mineralogy dolomite or a related mineral occurring as clusters of white or pinkish pearly crystals. ΘΚΠ the world > the earth > minerals > types of mineral > carbonates > [noun] > hexagonal > dolomite > varieties pearl spar1793 miemite1804 rhomb spar1804 gurhofite1816 brown-spar1843 pennite1850 tharandite1850 kutnahorite1907 huntite1953 protodolomite1955 1793 T. King Catal. Duplicates Ores: Pt. 1st 8 Cubic pyrites covered with pearl spar, the pyrites said to be rich in gold. 1843 J. E. Portlock Rep. Geol. Londonderry 208 Calcedony..disposed on pearl spar. 1977 A. Hallam Planet Earth 127 Dolomite..is more readily identified when its crystals develop curved composite faces to produce saddle-shaped aggregates often having a pink tinge and a pearly luster (whence its alternative name ‘pearl-spar’). < as lemmas |
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