单词 | pararammelsbergite |
释义 | > as lemmaspararammelsbergite pararammelsbergite n. Brit. /ˌparəˈraml̩zbəːɡʌɪt/ , U.S. /ˌpɛrəˈræm(ə)lzbərˌɡaɪt/ a rare arsenide of nickel, NiAs2, occurring as white, opaque, tabular crystals that alter to erythrite when exposed, and belonging to the orthorhombic crystal system.ΘΚΠ the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > marcasite or related minerals > arsenides mispickel1683 arsenopyrite1854 rammelsbergite1854 geyerite1868 Plinian1868 pararammelsbergite1939 1939 M. A. Peacock in Amer. Mineralogist Dec. ii. 11 Recently described materials provisionally named rammelsbergite.., from Cobalt, Ontario, and Elk Lake, Ontario, give identical x-ray powder photographs unlike those of from Schneeberg and Eisleben... The Canadian mineral is thus a distinct species for which the name pararammelsbergite is proposed. 1967 Canad. Mineralogist 9 129 Pararammelsbergite has vacant arsenic lattice positions which are occupied in part by excess metal atoms. 2000 Intermetallics 8 1399 A new polymorph of NiSb2 was obtained.., isostructural with the low-temperature form of NiAs2 (pararammelsbergite). < as lemmas |
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