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Forcherite

A variety of Opal
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06348630017272470886394.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
01211570017271988307644.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
03475270017272470895452.jpg
Forcherite

Mineral spring, Saint-Nectaire, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
04472590017272083149051.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
01211570017271988307644.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
08251590017272076845090.jpg
Forcherite

Mineral spring, Saint-Nectaire, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
04472590017272083149051.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
05935280017271988303453.jpg
Forcherite

Holzbrücken mill, Ingering valley, Spielberg, Murtal District, Styria, Austria
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About ForcheriteHide

Formula:
SiO2 · nH2O
Name:
Named for Mr. Forcher, who first collected the material.
A yellow to orange variety of opal, owing its colour to microscopic inclusions of the arsenic sulphides orpiment and realgar.

Originally reported from Holzbrücken mill, Ingering valley, Knittelfeld, Styria, Austria.


Unique IdentifiersHide

Mindat ID:
26687 (as Forcherite)
3004 (as Opal)
Long-form identifier:
mindat:1:1:26687:9 (as Forcherite)
mindat:1:1:3004:1 (as Opal)

Similar NamesHide

Chemistry of ForcheriteHide

Mindat Formula:
SiO2 · nH2O
Element Weights:
Element% weight
O61.458 %
Si35.961 %
H2.581 %

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

Other Language Names for ForcheriteHide

German:Forcherit

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Forcherite associated with OpalSiO2 · nH2O

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 ForcheriteHide

References for ForcheriteHide

Localities for ForcheriteHide

Showing 2 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.
Austria
 
  • Styria
    • Murtal District
      • Spielberg
        • Ingering valley
Maly (1862) +3 other references
France
 
  • Auvergne-Rhône-Alpes
    • Puy-de-Dôme
      • Issoire
        • Saint-Nectaire
Alain Tuel collection +1 other reference
Quick NavTopAbout ForcheriteUnique IdentifiersSimilar NamesChemistry Other LanguagesCommon AssociatesOther InformationInternet Links References Localities Locality List
 
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