Hsianghualite is a
tectosilicate
Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust.
In mineralogy, silica (silicon dioxide, ) is usually consid ...
(framework silicate) of
lithium
Lithium (from el, λίθος, lithos, lit=stone) is a chemical element with the symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid el ...
,
calcium
Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to ...
and
beryllium
Beryllium is a chemical element with the symbol Be and atomic number 4. It is a steel-gray, strong, lightweight and brittle alkaline earth metal. It is a divalent element that occurs naturally only in combination with other elements to form mi ...
, with
fluorine
Fluorine is a chemical element with the symbol F and atomic number 9. It is the lightest halogen and exists at standard conditions as a highly toxic, pale yellow diatomic gas. As the most electronegative reactive element, it is extremely reacti ...
, a member of the
zeolite group. It was discovered in 1958 and named for the
type locality
Type locality may refer to:
* Type locality (biology)
* Type locality (geology)
See also
* Local (disambiguation)
* Locality (disambiguation)
{{disambiguation ...
, 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.
[Gaines et al (1997) Dana's New Mineralogy Eighth Edition]
Its space group is I2
13
[ (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
The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ...
limestone which has been intruded by beryllium-bearing granite.[Roberts, Campbell and Rapp (1990) Encyclopedia of Minerals, 2nd edition] Associated mineral include fluorite, liberite, chrysoberyl, taaffeite and nigerite.[
]
Localities
Hsianghualite has been found only at the type locality
Type locality may refer to:
* Type locality (biology)
* Type locality (geology)
See also
* Local (disambiguation)
* Locality (disambiguation)
{{disambiguation ...
, the Xianghualing Mine in Linwu
Linwu County () is a county in Hunan Province, China, it is under the administration of the prefecture-level city of Chenzhou.
Located on the southern margin of the province, it is adjacent to the southwest of the city proper in Chenzhou. The cou ...
County, Hunan Province, China.
References
{{Reflist
External links
MindatWebmineral data
Tectosilicates
Zeolites
Cubic minerals
Minerals in space group 199
Minerals described in 1958