单词 | kutnahorite |
释义 | kutnahoriten. Mineralogy. A reddish-white rhombohedral carbonate of calcium, manganese, magnesium, and sometimes iron, belonging to the dolomite group of minerals. 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 1907 Mineral. Mag. 14 402 Kutnohorite... A rhombohedral carbonate with the atomic ratios Ca:Mn:Fe:Mg = 7:5:1:2 occurring as reddish-white cleavage-masses. 1955 Amer. Mineralogist 15 751 Kutnahorite occurs at Franklin as anhedral masses with curved cleavage surfaces up to three centimeters in size in a small veinlet cutting the normal franklinite ore. It is translucent, with a pale pink color. 1962 W. A. Deer et al. Rock-forming Minerals V. 267 Kutnohorites from Franklin containing approximately 10 per cent. excess CaCO3 show some degree of order in their structure. 1967 Amer. Mineralogist 52 1751 Occurrences of kutnahorite have been recorded from Franklin, New Jersey.., Kutná Hora, Czechoslovakia.., Chvaletice, Czechoslovakia..and Providencia, Mexico. This entry has not yet been fully updated (first published 1976; most recently modified version published online December 2020). < n.1907 |
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