Hsianghualite

hsianghualite

zinnwaldite

liberite

mengxianminite

Images

Formula: Li₂Ca₃Be₃(SiO₄)₃F₂
Tectosilicate (framework silicate), zeolite group, lithium- and beryllium- bearing mineral
Crystal System: Isometric
Specific gravity: 2.97 to 3.0 measured, 2.944 calculated
Hardness: 6½
Streak: White
Colour: White, colourless
Common impurities: Al,Fe,Mg,Na,K
Environments

Metamorphic environments

Although hsianghualite was first published in 1958, to date (June 2024) it has been reported only from the Xianghualing Sn-polymetallic ore field

Localities

At the type locality, the Xianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu County, Chenzhou, Hunan, China, hsianghualite occurs in phlogopite veins in a fluorine-rich metamorphosed Devonian (419.2 to 358.9 million years ago) limestone intruded by a beryllium-bearing granite. Associated minerals include fluorite, zinnwaldite, chrysoberyl, taaffeite and liberite (HOM).
In 2017 mengxianminite, a new borate mineral, was reported from the hsianghualite vein of Xianghualing skarn, associated with fluorite, phlogopite, hsianghualite, magnetite, dravite, magnesiotaaffeite-2N′2S and calcite AM 102.10.2136–2141).
Hsianghualite from Xianghualing - Image

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