holmquistite

holmquistite

[′hōm‚kwi‚stīt]
(mineralogy)
(Na,K,Ca)Li(Mg,Fe)3 Al2Si8O22(OH)2 A bluish-black, orthorhombic mineral composed of alkali and silicate of iron, magnesium, lithium, and aluminum.
References in periodicals archive ?
Only lustrous terminated schorl crystals in kaolinized pegmatite and holmquistite in pegmatite contact schists have been abundant enough to be found in many collections.
The pelitic unit may contain staurolite, garnet, and andalusite, whereas tourmaline and rare holmquistite (Hutchinson 1982) occur in the amphibolite adjacent to the pegmatite lenses.
apatite, aquamarine, ashanite, bimushite, bismutomicrolite, chrysoberyl, *cygrayite, epidote, ertixiite, fluorite, garnet, hiddenite, holmquistite, ilmenite, ishikawaite, manganotantalite, manganocolumbite, molybdenite, muscovite, phenakite, pollucite, polylithionite, pyrite, *qingheite, samarskite, scheelite, sphalerite, spodumene, staurolite, topaz, tourmaline, trilithionite, uraninite, zircon Labashan Hubei turquoise Laiyuan Hebei hematite, ludwigite Lamo Guangxi, apatite, galena, pyrite, quartz, Zhuang A.
Barros (1972) reported the presence of holmquistite in the border zone of the Morrua pegmatite.
DE (1972) Nota sobre una ocorrencia de holmquistite na bordadura do pegmatito Morrua (Zambezia, Mocambique).
with Holmquistite, forms a series with Clinoferroholmquistite, Amphibole group, Can.