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Pearceite-Tac

A structural variant of Pearceite
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Formula:
[Ag6As2S7][Ag9CuS4]
Crystal System:
Trigonal
A polytype of Pearceite

Pearceite-Polybasite series


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Unique IdentifiersHide

Mindat ID:
31643
Long-form identifier:
mindat:1:1:31643:9

Chemistry of Pearceite-TacHide

Mindat Formula:
[Ag6As2S7][Ag9CuS4]
Element Weights:
Element% weight
Ag74.081 %
S16.149 %
As6.861 %
Cu2.909 %

Calculated from ideal end-member formula.
Elements listed:
Ag, As, Cu, S - search for minerals with similar chemistry

Crystallography of Pearceite-TacHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 7.3876(4) Å, c = 11.8882(7) Å
Ratio:
a:c = 1 : 1.609
Unit Cell V:
561.89 ų (Calculated from Unit Cell)
Z:
1
Comment:
Data at 300 K (Bindi et al., 2006); 120 K cell parameters: 7.3721 (6), 11.8104 (12) Å.

Other Language Names for Pearceite-TacHide

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 Pearceite-TacHide

References for Pearceite-TacHide

Localities for Pearceite-TacHide

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.

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.
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Hejny et al. (2021) +1 other reference
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