westervelditen.
/ˈwɛstəvɛldʌɪt/, U.S. /ˈwɛstərˌvɛlˌdaɪt/ Mineralogy.
An arsenic-containing mineral which occurs as microscopic brownish or silvery crystals typically forming inclusions in other minerals.Westerveldite is an arsenide of iron, nickel, and cobalt, (Fe,Ni,Co)As. Crystal system: orthorhombic.
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the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > other arsenides
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placodine1854
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westerveldite1972
1972 I. S. Oen et al. in Amer. Mineralogist 57 354 A Co-bearing nickel-rich iron monoarsenide corresponding in composition and structure to a Ni-rich member of the orthorhombic FeAs-(Fe,Ni)As solid solution series of synthetic alloys occurs in chromite-niccolite ores from La Gallega, Spain. The name westerveldite is proposed for minerals in this solid solution series.
1977 Neues Jahrb. f. Mineral. Abhandlungen 130 209 Westerveldite with the ideal composition FeAs was found at four localities within the Ilímaussaq alkaline intrusion in South Greenland.
2008 Jrnl. Contaminant Hydrol. 99 3/1 Generally, the family of As bearing pyrites and occasionally minerals like westerveldite forms the primary source of most of the As in the water of this area.
This entry has been updated (OED Third Edition, June 2011; most recently modified version published online December 2021).
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n.1972