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Ehrigite

A valid IMA mineral species
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05439730017678973221726.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
02228690017672919517019.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
05439730017678973221726.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
02228690017672919517019.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
05439730017678973221726.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
02228690017672919517019.jpg
Ehrigite, etc.

Honzawa mine, Otsuki City, Yamanashi Prefecture, Japan
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About EhrigiteHide

Formula:
Bi8Te3
Colour:
pale gray color
Crystal System:
Trigonal
Name:
Named by Ciobanu et al. (2024) for geologist Dr. Kathy Ehrig, chief geologist and metallurgist for Broken Hill Proprietary's Olympic Dam operation. Dr. Ehrig is world-renowned for her expertise in geometallurgy and has received numerous international accolades in recognition of her work.
Chemically closely related to hedleyite, Bi7Te3.

Relatively common; reported several times in the literature prior to IMA approval (see Ciobanu et al., 2024).


Unique IdentifiersHide

Mindat ID:
471007
Long-form identifier:
mindat:1:1:471007:9

Similar NamesHide

AerugiteA valid IMA mineral species - grandfatheredNi8.5(AsO4)2As5+O8

IMA Classification of EhrigiteHide

Classification of EhrigiteHide

Strunz-mindat (2026):
2.DC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
C : Variable M:S

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
EhgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of EhrigiteHide

Transparency:
Opaque
Colour:
pale gray color

Chemistry of EhrigiteHide

Mindat Formula:
Bi8Te3
Element Weights:
Element% weight
Bi81.369 %
Te18.631 %

Calculated from ideal end-member formula.
Bi
Te
Elements listed:
Bi, Te - search for minerals with similar chemistry

Crystallography of EhrigiteHide

Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 4.519(6) Å, c = 65.18(2) Å
Ratio:
a:c = 1 : 14.424
Unit Cell V:
1,152.74 ų (Calculated from Unit Cell)
Z:
3

X-Ray Powder DiffractionHide

Type Occurrence of EhrigiteHide

Type Locality:
ⓘ Good Hope Mine, Hedley, Osoyoos Mining Division, British Columbia, Canada
General Appearance of Type Material:
occurs as sub-100-micron-sized grains in hedenbergite skarn
Place of Conservation of Type Material:
In the collections of the South Australian Museum, North Terrace, Adelaide, SA 5000, Australia, catalogue number G35384
Geological Setting of Type Material:
skarn
Reference:
Ciobanu, Cristiana L.; Cook, Nigel J.; Yao, Jie; Slattery, Ashley; Wade, Benjamin; Dima, Gabriel I. (2024) Ehrigite, Bi8Te3, a New Member of the Tetradymite Group. The Canadian Journal of Mineralogy and Petrology, 62 (6). 847-861 doi:10.3749/2400023

Synonyms of EhrigiteHide

Other Language Names for EhrigiteHide

Dutch:Ehrigiet
German:Ehrigit

Relationship of Ehrigite to other SpeciesHide

Member of:
Tetradymite Group
Other Members of Tetradymite Group:
BaksaniteBi6Te2S3Trig. 3m(32/m) : P3m1
DulanggouiteBi6Te3Trig. 3m(32/m) : P3m1
HedleyiteBi7Te3Trig. 3m(32/m) : R3m
IkunoliteBi4S3Trig. 3m(32/m) : R3m
IngoditeBi2TeSTrig.
Joséite-ABi4TeS2Trig. 3m(32/m) : R3m
Joséite-BBi4Te2STrig. 3m(32/m) : R3m
KawazuliteBi2Te2SeTrig. 3m(32/m) : R3m
LaitakariteBi4(Se,S)3Trig. 3m(32/m) : R3m
ParaguanajuatiteBi2Se3Trig. 3m(32/m) : R3m
PilseniteBi4Te3Trig. 3m(32/m) : R3m
SkippeniteBi2TeSe2Trig.
SulphotsumoiteBi3Te2STrig. 3m(32/m) : P31m
TellurantimonySb2Te3Trig. 3m(32/m) : R3m
TellurobismuthiteBi2Te3Trig. 3m(32/m) : R3m
TelluronevskiteBi3TeSe2Trig. 3m(32/m) : P3m1
TetradymiteBi2Te2STrig. 3m(32/m) : R3m
TsumoiteBiTeTrig. 3m(32/m) : P31m
VihorlatiteBi24Se17Te4Trig. 3m(32/m) : P3m1
ZipseriteBi5S4Trig. 3m(32/m) : R3m

Common AssociatesHide

Associations Based on Photo Data:
6 photos of Ehrigite associated with Native GoldAu
5 photos of Ehrigite associated with DulanggouiteBi6Te3
3 photos of Ehrigite associated with AtelestiteBi2(AsO4)O(OH)
3 photos of Ehrigite associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

2.DC.05LaitakariteBi4(Se,S)3Trig. 3m(32/m) : R3m
2.DC.05ParaguanajuatiteBi2Se3Trig. 3m(32/m) : R3m
2.DC.05TelluronevskiteBi3TeSe2Trig. 3m(32/m) : P3m1
2.DC.05HedleyiteBi7Te3Trig. 3m(32/m) : R3m
2.DC.05HitachiitePb5Bi2Te2S6Trig. 3m : P3m1
2.DC.05TellurantimonySb2Te3Trig. 3m(32/m) : R3m
2.DC.05'Joséite'Bi4TeS2Trig. 3m(32/m) : R3m
2.DC.05TellurobismuthiteBi2Te3Trig. 3m(32/m) : R3m
2.DC.05Joséite-ABi4TeS2Trig. 3m(32/m) : R3m
2.DC.05Joséite-BBi4Te2STrig. 3m(32/m) : R3m
2.DC.05NevskiteBi(Se,S)Trig.
2.DC.05TetradymiteBi2Te2STrig. 3m(32/m) : R3m
2.DC.05'Protojoséite'Bi3(Te,S)2Trig.
2.DC.05SkippeniteBi2TeSe2Trig.
2.DC.05KawazuliteBi2Te2SeTrig. 3m(32/m) : R3m
2.DC.05'UM1983-09-S:BiPbTe'PbBi3S2Te
2.DC.05PilseniteBi4Te3Trig. 3m(32/m) : R3m
2.DC.05'Sztrókayite'Bi3TeS2
2.DC.05BaksaniteBi6Te2S3Trig. 3m(32/m) : P3m1
2.DC.05'Joséite-C'Bi16Te3S9
2.DC.05VihorlatiteBi24Se17Te4Trig. 3m(32/m) : P3m1
2.DC.05TsumoiteBiTeTrig. 3m(32/m) : P31m
2.DC.05IkunoliteBi4S3Trig. 3m(32/m) : R3m
2.DC.05IngoditeBi2TeSTrig.
2.DC.05SulphotsumoiteBi3Te2STrig. 3m(32/m) : P31m
2.DC.15'Castaingite'CuMo2S5Hex.

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 EhrigiteHide

References for EhrigiteHide

Localities for EhrigiteHide

Showing 9 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.
Brazil
 
  • Minas Gerais
    • São José da Varginha
Canada (TL)
 
  • British Columbia
    • Osoyoos Mining Division
      • Hedley
Bosi et al. (2024)
China
 
  • Liaoning
    • Dandong
      • Zhen'an District
        • Wulong orefield
  • Sichuan
    • Garzê Autonomous Prefecture (Ganzi Autonomous Prefecture)
      • Danba Co.
        • Xintaizi Au ore field
Zheng et al. (2026)
Czech Republic
 
  • Vysočina Region
    • Havlíčkův Brod District
SEJKORA et al. (2026)
Iceland
 
  • Northwestern Region
    • Húnabyggð
Guðmundsson (2024)
Italy
 
  • Tuscany
    • Livorno Province
      • Capoliveri
Senesi et al. (2025)
Japan
 
  • Yamanashi Prefecture
    • Otsuki City
TANAKA et al. (2025)
Russia
 
  • Murmansk Oblast
    • Polyarnyy
Kalinin et al. (2024)
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