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单词 pararammelsbergite
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pararammelsbergite
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.
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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).
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