tilasiten.
/ˈtiːləsʌɪt/ Mineralogy.
A fluor-arsenate of calcium and magnesium, CaMg(AsO4)F, that is isostructural with sphene and occurs as translucent monoclinic crystals that are colourless, green, or greyish.
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the world > the earth > minerals > types of mineral > arsenates > [noun] > others of two plus elements
kœttigite1850
synadelphite1892
retzian1895
fluor-adelite1897
tilasite1897
schallerite1925
smolyaninovite1957
talmessite1961
1897 Jrnl. Chem. Soc. 72 ii. 325 Tilasite or fluor~adelite from Långban... Irregular grains of this new mineral are found with hausmannite, berzeliite and calcite in a grey limestone.
1968 I. Kostov Mineral. ii. 463 Tilasite and isokite are monoclinic (C2/c), isostructural with sphene.
1979 Mineral. Abstr. XXX. 293/1 Tilasite crystals <2·5 mm across have been found with friedelite and baryte at the Sterling Hill mine, Ogdensburg, Sussex County, New Jersey.
This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).
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