Hsianghualite
| Hsianghualite | ||
|---|---|---|
Specific gravity 2.97 to 3.00, measured[5] | | |
| Refractive index | n = 1.6132[3] | |
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
co-ordination forming a three-dimensional framework.[2]
Its space group is I213[2] (Previously reported as I4132[3]). Unit cell parameters are a = 12.879 or 12.897,[3][5] 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.[6] Associated mineral include fluorite, liberite, chrysoberyl, taaffeite and nigerite.[2]
Localities
Hsianghualite has been found only at the
Linwu
County, Hunan Province, China.
References
- S2CID 235729616.
- ^ a b c d Gaines et al (1997) Dana's New Mineralogy Eighth Edition
- ^ a b c d e American Mineralogist (1959) 44:1327 English language abstract of Huang Yung-hwei, Tu Shaohua, Wang K'ung-hai, Chao Chun-Lin, and Yu Cheng-Chih (1958)Ti-chih-yueh-k'an 7: 35 (in Chinese)
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W.; Nichols, Monte C. (2005). "Hsianghualite" (PDF). Handbook of Mineralogy. Mineral Data Publishing. Retrieved 14 March 2022.
- ^ a b American Mineralogist (1961) 46:244. Data from A A Beus (1960) Akademii Nauk SSSR 1-329 (in Russian).
- ^ Roberts, Campbell and Rapp (1990) Encyclopedia of Minerals, 2nd edition