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Bornhardtite Subgroup

A group of related mineral species
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09267220017271927179783.jpg
Trüstedtite, etc.

Tilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
09267220017271927179783.jpg
Trüstedtite, etc.

Tilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
09267220017271927179783.jpg
Trüstedtite, etc.

Tilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
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About Bornhardtite SubgroupHide

Formula:
A2+D3+2Se4
A= Co2+, Ni2+D= Co, Ni

Note: the A site is named as B in the IMA Proposal 17-H, renamed here to avoid confusion with Boron.
The Bornhardtite Subgroup is a subgroup of the Seleniospinel Group in the Spinel Supergroup.


Unique IdentifiersHide

Mindat ID:
52870
Long-form identifier:
mindat:1:1:52870:6

IMA Classification of Bornhardtite SubgroupHide

IMA status notes:
IMA Approved Group Name
Approval history:
A classification of spinel supergroup was approved by IMA in march 2018 (Proposal 17-H).

Chemistry of Bornhardtite SubgroupHide

Mindat Formula:
A2+D3+2Se4

A= Co2+, Ni2+D= Co, Ni

Note: the A site is named as B in the IMA Proposal 17-H, renamed here to avoid confusion with Boron.

Relationship of Bornhardtite Subgroup to other SpeciesHide

Member of:
Seleniospinel Group > Spinel Supergroup
Other Members of Seleniospinel Group:
NickeltyrrelliteCuNi2Se4Iso. m3m (4/m 3 2/m) : Fd3m
TyrrelliteCu(Co,Ni)2Se4Iso. m3m (4/m 3 2/m) : Fd3m
Bornhardtite Subgroup Members:
Bornhardtite Co2+Co3+2Se4Iso. m3m (4/m 3 2/m) : Fd3m
Trüstedtite Ni3Se4Iso.

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 Bornhardtite SubgroupHide

References for Bornhardtite SubgroupHide

Localities for Bornhardtite SubgroupHide

Showing 12 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.
Argentina
 
  • Mendoza Province
    • Luján de Cuyo department
      • Cacheuta District
[Bornhardtite] Grundmann et al. (2018)
[Bornhardtite] Mineralogical Society of America - ...
[Bornhardtite] Zappettini et al. (2014)
Canada
 
  • Saskatchewan
[Bornhardtite] Mineralogical Society of America - ...
China
 
  • Sichuan
    • Ngawa Autonomous Prefecture (Aba Autonomous Prefecture)
      • Zoigê Co. (Ruo'ergai Co.)
[Trüstedtite] Anthony
Finland
 
  • North Ostrobothnia
[Trüstedtite] Vuorelainen et al. (1964) +1 other reference
[Trüstedtite] Vuorelainen et al. (1964)
Germany
 
  • Lower Saxony
    • Goslar District
      • Harz (Landkreis Goslar)
[Bornhardtite] Ramdohr et al. (1955) +3 other references
    • Göttingen District
      • Osterode am Harz
        • Lerbach
[Bornhardtite] Weiß (1990)
  • Saxony-Anhalt
    • Mansfeld-Südharz
      • Mansfeld
[Bornhardtite, Trüstedtite] Tischendorf (1969) +1 other reference
UK
 
  • England
    • Devon
      • Torbay
        • Torquay
[Trüstedtite] Stanley et al. (1990) +1 other reference
Quick NavTopAbout Bornhardtite SubgroupUnique IdentifiersIMA Classification Chemistry RelationshipsOther InformationInternet Links References Localities Locality List
 
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