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Dominant species
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Hsianghualite
Hsianghualite
Chemical
Formula
Li2Ca3(BeSiO4)3F2
Species
Silicates
Crystal
System
Isometric
Mohs
Scale
6
Specific
Gravity
2.97-3.00
Color
White or colorless
Streak
White
Luster
Vitreous
Refractive
Index
n = 1.6132[1]
Diaphaneity
Transparent to translucent
Cleavage
None
Crystal Habit:trisoctahedral or dodecahedral crystals or granular masses[1]
Hsianghualite is a tectosilicate (framework silicate) of lithium, calcium and beryllium, with fluorine, a member of the zeolite group. It was discovered in 1958 and named for the type locality, Hsiang Hua, 香花, meaning fragrant flower.

Structure

Structure is analogous to that of analcime with Be and Si in tetrahedral co-ordination forming a three-dimensional framework. Its space group is I213 (Previously reported as I4132). Unit cell parameters are a = 12.879 or 12.897, and Z = 8.

Environment

It occurs within phlogopite veins in the light-coloured band of green and white banded metamorphosed Devonian limestone which has been intruded by beryllium-bearing granite. Associated mineral include fluorite, liberite, chrysoberyl, taaffeite and nigerite.

Localities

Hsianghualite has been found only at the type locality, the Xianghualing Mine in Linwu County, Hunan Province, China.