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Selenopolybasite-Tac

A structural variant of Selenopolybasite
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Formula:
[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Crystal System:
Trigonal
A polytype of Selenopolybasite

The Se-analogue of polybasite-Tac.


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Unique IdentifiersHide

Mindat ID:
11168
Long-form identifier:
mindat:1:1:11168:5

Chemistry of Selenopolybasite-TacHide

Mindat Formula:
[(Ag,Cu)6(Sb,As)2(S,Se)7][Ag9Cu(S,Se)2Se2]
Element Weights:
Element% weight
Ag68.225 %
S12.168 %
Sb10.268 %
Se6.659 %
Cu2.680 %

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

Crystallography of Selenopolybasite-TacHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 7.5950(4) Å, c = 12.0731(6) Å
Ratio:
a:c = 1 : 1.59
Unit Cell V:
603.12 ų (Calculated from Unit Cell)
Z:
1

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 Selenopolybasite-TacHide

References for Selenopolybasite-TacHide

Localities for Selenopolybasite-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.
Mexico
 
  • Guanajuato
    • Guanajuato Municipality
      • La Luz
Am Min 92:918-925
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