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Mgriite

Formula:
Cu
 
3
AsSe
 
3
Hardness:4½ - 5


See also Chaméanite.

Classification of Mgriite

IMA status:Approved
Strunz 8th edition ID:2/C.11-75
Nickel-Strunz 10th (pending) edition ID:2.LA.45

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
L : Unclassified Sulfosalts
A : Without essential Pb
Dana 8th edition ID:3.4.7.2

3 : SULFOSALTS
4 : ø = 3
Hey's CIM Ref.:3.1.21

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
1 : Sulphides etc. of Cu
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Type Occurrence of Mgriite

Type Locality:Schlema-Hartenstein District, Erzgebirge, Saxony, Germany
Year of Discovery:1982

Physical Properties of Mgriite

Hardness (Mohs):4½ - 5

Chemical Properties of Mgriite

Formula:
Cu
 
3
AsSe
 
3
Essential elements:As, Cu, Se
All elements listed in formula:As, Cu, Se
Common Impurities:Fe

Relationship of Mgriite to other Species

Related Minerals - Nickel-Strunz Grouping):
2.LA.10Dervillite
Ag
 
2
AsS
 
2
2.LA.15Daomanite
CuPtAsS
 
2
2.LA.20Vaughanite
TlHgSb
 
4
S
 
7
2.LA.25Criddleite
TlAg
 
2
Au
 
3
Sb
 
10
S
 
10
2.LA.30Fettelite
Ag
 
24
HgAs
 
5
S
 
20
2.LA.35Chaméanite
(Cu,Fe)
 
4
As(Se,S)
 
4
2.LA.40Arcubisite
Ag
 
6
CuBiS
 
4
2.LA.50Benleonardite
Ag
 
8
(Sb,As)Te
 
2
S
 
3
2.LA.55Tsnigriite
Ag
 
9
SbTe
 
3
(S,Se)
 
3
2.LA.60Borovskite
Pd
 
3
SbTe
 
4
2.LA.65Jonassonite
AuBi
 
5
S
 
4
Related Minerals - Hey's Index Grouping:
3.1.1Chalcocite
Cu
 
2
S
3.1.2Djurleite
Cu
 
31
S
 
16
3.1.3Digenite
Cu
 
9
S
 
5
3.1.4Anilite
Cu
 
7
S
 
4
3.1.5Roxbyite
Cu
 
9
S
 
5
3.1.6Spionkopite
Cu
 
39
S
 
28
3.1.7Geerite
Cu
 
8
S
 
5
3.1.8Covellite
CuS
3.1.9Berzelianite
Cu
 
2
Se
3.1.10Bellidoite
Cu
 
2
Se
3.1.11Umangite
Cu
 
3
Se
 
2
3.1.12Yarrowite
Cu
 
9
S
 
8
3.1.13Athabascaite
Cu
 
5
Se
 
4
3.1.14Klockmannite
CuSe
3.1.15Krut'aite
CuSe
 
2
3.1.16Weissite
Cu
 
2-x
Te
3.1.17Rickardite
Cu
 
7
Te
 
5
3.1.18Vulcanite
CuTe
3.1.19Bambollaite
Cu(Se,Te)
 
2
3.1.20Lautite
CuAsS
3.1.22Cubanite
CuFe
 
2
S
 
3
3.1.23Bornite
Cu
 
5
FeS
 
4
3.1.24Fukuchilite
Cu
 
3
FeS
 
8
3.1.25Chalcopyrite
CuFeS
 
2
3.1.26Mooihoekite
Cu
 
9
Fe
 
9
S
 
16
3.1.27Haycockite
Cu
 
4
Fe
 
5
S
 
8
3.1.28Isocubanite
CuFe
 
2
S
 
3
3.1.29Idaite
Cu
 
5
FeS
 
6
3.1.30Nukundamite
(Cu,Fe)
 
4
S
 
4
3.1.31Putoranite
Cu
 
9
Fe
 
9
S
 
16
3.1.32Orickite
2CuFeS
 
2
·H
 
2
O
3.1.33Eskebornite
CuFeSe
 
2
3.1.34Chaméanite
(Cu,Fe)
 
4
As(Se,S)
 
4
3.1.35Talnakhite
Cu
 
9
(Fe,Ni)
 
8
S
 
16

Other Names for Mgriite

Synonyms:
IMA1980-100
German names:
Mgriit
Spanish names:
Mgriita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Mgriite

Reference List:American Mineralogist (1983): 68: 280-281.

American Mineralogist (1991): 76: 2026.

American Mineralogist (1995): 80: 849.

Internet Links for Mgriite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Mgriite in the Natural History Museum (London) online catalogue
  • Mgriite details from Handbook of Mineralogy (PDF)
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    Localities for Mgriite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Germany
     
    • Saxony
      • Erzgebirge
    Mineral and/or Locality
    Google
     
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