holmquistiten.
/ˈhəʊmkwɪstʌɪt//ˈhəʊmkvɪstʌɪt/ Mineralogy.
A rare basic alumino-silicate of lithium, magnesium, and aluminium that is an orthorhombic member of the amphibole group and typically occurs in light blue to dark violet masses.
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holmquistite1914
1914 Chem. Abstr. 8 1556 The formation of the holmquistite was no doubt a pneumatolytic process, connected with the intrusion of the well known Li-pegmatites of the region.
1930 Amer. Mineralogist 15 292 Holmquistite from the North Carolina locality is composed largely of the lithia member of the amphibole group and a minor amount of a deficient silica member commonly found in basic rocks.
1966 W. A. Deer et al. Introd. Rock-forming Minerals ii. 159 Holmquistite typically occurs at the contact of lithium-rich pegmatites with country rocks.
This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2018).
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