Trüstedtite
A valid IMA mineral species
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About Trüstedtite
Formula:
Ni3Se4
Colour:
Creamy-yellow (reflected light)
Lustre:
Metallic
Hardness:
2½
Specific Gravity:
6.62 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named by Y. Vuorelainen, A. Huhma, and A. Häkli in 1964 in honor of Otto Alexander Paul Trüstedt (30 March 1866, Paris, France - 11 September 1929, Helsinki, Finland) who developed the prospecting methods leading to the discovery of the Outokumpu deposit (Finland).
Type Locality:
This page provides mineralogical data about Trüstedtite.
Unique Identifiers
Mindat ID:
4032
Long-form identifier:
mindat:1:1:4032:3
GUID
(UUID V4):
(UUID V4):
35b0993c-f7e7-4fff-b06d-775d3a3f2ce1
IMA Classification of Trüstedtite
Approved
IMA Formula:
Ni2+Ni3+2Se4
First published:
1964
Classification of Trüstedtite
2.DA.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
A : M:S = 3:4
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
A : M:S = 3:4
2.10.1.9
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
3.11.16
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Trü | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Trüstedtite
Metallic
Transparency:
Opaque
Colour:
Creamy-yellow (reflected light)
Hardness:
2½ on Mohs scale
Density:
6.62 g/cm3 (Calculated)
Optical Data of Trüstedtite
Reflectivity:
Wavelength | R |
---|---|
400nm | 42.2% |
420nm | 43.6% |
440nm | 45.0% |
460nm | 46.4% |
480nm | 47.5% |
500nm | 48.5% |
520nm | 49.4% |
540nm | 50.3% |
560nm | 51.2% |
580nm | 52.0% |
600nm | 52.6% |
620nm | 53.1% |
640nm | 53.8% |
660nm | 54.3% |
680nm | 54.9% |
700nm | 55.4% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 55.4%.
Colour in reflected light:
Yellow
Chemistry of Trüstedtite
Mindat Formula:
Ni3Se4
Elements listed:
Crystallography of Trüstedtite
Crystal System:
Isometric
Cell Parameters:
a = 9.94 Å
Unit Cell V:
982.11 ų (Calculated from Unit Cell)
Z:
8
Comment:
Fd3m
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.48 Å | (vs) |
1.755 Å | (vs) |
3.00 Å | (ms) |
2.87 Å | (ms) |
1.905 Å | (m) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Trüstedtite
General Appearance of Type Material:
Euhedral crystals in clausthalite.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
Geological Setting of Type Material:
In calcite, uranium-bearing veins.
Associated Minerals at Type Locality:
Reference:
Vuorelainen, Y., Huhma, A., Häkli, A. (1964) Sederholmite, wilkmanite, kullerudite, mäkinenite, and trüstedtite, five new nickel selenide minerals. Comptes Rendus de la Société Géologique de Finlande: 36: 113-125.
Other Language Names for Trüstedtite
Relationship of Trüstedtite to other Species
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Trüstedtite associated with Clausthalite | PbSe |
1 photo of Trüstedtite associated with Naumannite | Ag2Se |
1 photo of Trüstedtite associated with Penroseite | (Ni,Co,Cu)Se2 |
Related Minerals - Strunz-mindat Grouping
2.DA. | Zaykovite | Rh3Se4 |
2.DA. | Grimmite | NiCo2S4 |
2.DA. | Zolenskyite | FeCr2S4 |
2.DA. | Ezochiite | Cu+(Rh3+Pt4+)S4 |
2.DA. | Ferrodimolybdenite | FeMo2S4 |
2.DA.05 | Bornhardtite | Co2+Co3+2Se4 |
2.DA.05 | Carrollite | CuCo2S4 |
2.DA.05 | Cuproiridsite | (Cu,Fe)Ir2S4 |
2.DA.05 | Cuprorhodsite | (Cu1+0.5Fe3+0.5)Rh3+2S4 |
2.DA.05 | Daubréelite | Fe2+Cr3+2S4 |
2.DA.05 | Fletcherite | CuNi2S4 |
2.DA.05 | Florensovite | (Cu,Zn)Cr1.5Sb0.5S4 |
2.DA.05 | Greigite | Fe2+Fe3+2S4 |
2.DA.05 | Indite | FeIn2S4 |
2.DA.05 | Kalininite | ZnCr2S4 |
2.DA.05 | Linnaeite | Co2+Co3+2S4 |
2.DA.05 | Malanite | Cu1+(Ir3+Pt4+)S4 |
2.DA.05 | Polydymite | Ni2+Ni3+2S4 |
2.DA.05 | Siegenite | CoNi2S4 |
2.DA.05 | Tyrrellite | Cu(Co3+,Ni3+)2Se4 |
2.DA.05 | Violarite | Fe2+Ni3+2S4 |
2.DA.05 | Xingzhongite | Pb2+Ir3+2S4 |
2.DA.05 | Cadmoindite | CdIn2S4 |
2.DA.05 | Cuprokalininite | CuCr2S4 |
2.DA.05 | Joegoldsteinite | MnCr2S4 |
2.DA.05 | Nickeltyrrellite | CuNi2Se4 |
2.DA.10 | Rhodostannite | Cu1+(Fe2+0.5Sn4+1.5)S4 |
2.DA.10 | Toyohaite | Ag1+(Fe2+0.5Sn4+1.5)S4 |
2.DA.15 | Brezinaite | Cr3S4 |
2.DA.15 | Heideite | (Fe,Cr)1.15(Ti,Fe)2S4 |
2.DA.20 | Inaglyite | Cu3Pb(Ir,Pt)8S16 |
2.DA.20 | Konderite | Cu3Pb(Rh,Pt,Ir)8S16 |
2.DA.25 | Kingstonite | (Rh,Ir,Pt)3S4 |
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 Trüstedtite
mindat.org URL:
https://www.mindat.org/min-4032.html
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References for Trüstedtite
Localities for Trüstedtite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
China | |
| Anthony |
Finland | |
| Vuorelainen Y et al. (1964) +1 other reference |
| Vuorelainen et al. (1964) |
Germany | |
| Wittern (2001) |
UK | |
| Stanley et al. (1990) +1 other reference |
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Tilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany