Bornhardtite Subgroup
A group of related mineral species
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About Bornhardtite Subgroup
Formula:
A2+D3+2Se4
A= Co2+, Ni2+
D= Co, Ni
Note: the D site is named as B in the IMA Proposal 17-H, to avoid confusion with Boron.
D= Co, Ni
Note: the D site is named as B in the IMA Proposal 17-H, to avoid confusion with Boron.
Member of:
Unique Identifiers
Mindat ID:
52870
Long-form identifier:
mindat:1:1:52870:6
GUID
(UUID V4):
(UUID V4):
756de359-b21a-4046-b503-0f99a066b6e6
IMA Classification of Bornhardtite Subgroup
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 Subgroup
Mindat Formula:
A2+D3+2Se4
A= Co2+, Ni2+
D= Co, Ni
Note: the D site is named as B in the IMA Proposal 17-H, to avoid confusion with Boron.
A= Co2+, Ni2+
D= Co, Ni
Note: the D site is named as B in the IMA Proposal 17-H, to avoid confusion with Boron.
Relationship of Bornhardtite Subgroup to other Species
Member of:
Other Members of this group:
| Nickeltyrrellite | CuNi2Se4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| Tyrrellite | Cu(Co3+,Ni3+)2Se4 | Iso. m3m (4/m 3 2/m) : Fd3m |
Group Members:
| Bornhardtite | Co2+Co3+2Se4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| Trüstedtite | Ni3Se4 | Iso. |
Other Information
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 Subgroup
mindat.org URL:
https://www.mindat.org/min-52870.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
Tilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany