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Tianhuang Stone

A variety of Nacrite
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Formula:
Al2(Si2O5)(OH)4
A dense variety of nacrite, which is traded in China as a gemstone and is used for carvings. The material consists mainly of nacrite, but may also contain minor illite or dickite in varying proportions. The most valuable variety consists of golden yellow nacrite with a coating of colourless, transparent to semi-transparent dickite. This material is only known from the Banlian gravel beds near Shoushan, Fuzhou Prefecture, Fujian Province. The Chinese consider Tianhuang stone as a variety of Shoushan stone although true Shoushan stone mainly consists of pyrophyllite.


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Unique IdentifiersHide

Mindat ID:
40495 (as Tianhuang Stone)
2826 (as Nacrite)
Long-form identifier:
mindat:1:1:40495:6 (as Tianhuang Stone)
mindat:1:1:2826:0 (as Nacrite)

Chemistry of Tianhuang StoneHide

Mindat Formula:
Al2(Si2O5)(OH)4
Element Weights:
Element% weight
O55.777 %
Si21.758 %
Al20.903 %
H1.562 %

Calculated from ideal end-member formula.
Elements listed:
Al, H, O, Si - search for minerals with similar chemistry

Synonyms of Tianhuang StoneHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Tianhuang StoneHide

References for Tianhuang StoneHide

Localities for Tianhuang StoneHide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
China
 
  • Fujian
    • Fuzhou
      • Jin'an District
        • Shoushan
Leifu Ren (1988)
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