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Trüstedtite

A valid IMA 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 TrüstedtiteHide

06310480017271927226435.jpg
Otto A.P. Trüstedt
Formula:
Ni3Se4
Colour:
Creamy-yellow (reflected light)
Lustre:
Metallic
Hardness:
2½
Specific Gravity:
6.62 (Calculated)
Crystal System:
Isometric
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).
This page provides mineralogical data about Trüstedtite.


Unique IdentifiersHide

Mindat ID:
4032
Long-form identifier:
mindat:1:1:4032:3

IMA Classification of TrüstedtiteHide

Classification of TrüstedtiteHide

Strunz-mindat (2025):
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
Dana 8th ed.:
2.10.1.9

2 : SULFIDES
10 : AmBnXp, with (m+n):p = 3:4
Hey's CIM Ref.:
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

Mineral SymbolsHide

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

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

Physical Properties of TrüstedtiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Creamy-yellow (reflected light)
Hardness:
2½ on Mohs scale
Density:
6.62 g/cm3 (Calculated)

Optical Data of TrüstedtiteHide

Reflectivity:
WavelengthR1 (%)
400nm42.2%
420nm43.6%
440nm45.0%
460nm46.4%
480nm47.5%
500nm48.5%
520nm49.4%
540nm50.3%
560nm51.2%
580nm52.0%
600nm52.6%
620nm53.1%
640nm53.8%
660nm54.3%
680nm54.9%
700nm55.4%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 55.4%.
Colour in reflected light:
Yellow

Chemistry of TrüstedtiteHide

Mindat Formula:
Ni3Se4
Element Weights:
Element% weight
Se64.206 %
Ni35.795 %

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

Crystallography of TrüstedtiteHide

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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.48 Å(vs)
1.755 Å(vs)
3.00 Å(ms)
2.87 Å(ms)
1.905 Å(m)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-𝑇 alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of TrüstedtiteHide

Type Locality:
ⓘ Kitka River Valley, Kuusamo, North Ostrobothnia, Finland
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:
ClausthalitePenroseiteSederholmite
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 TrüstedtiteHide

Relationship of Trüstedtite to other SpeciesHide

Member of:
Bornhardtite Subgroup > Seleniospinel Group > Spinel Supergroup
Other Members of Bornhardtite Subgroup:
BornhardtiteCo2+Co3+2Se4Iso. m3m (4/m 3 2/m) : Fd3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Trüstedtite associated with ClausthalitePbSe
1 photo of Trüstedtite associated with NaumanniteAg2Se
1 photo of Trüstedtite associated with Penroseite(Ni,Co,Cu)Se2

Related Minerals - Strunz-mindat GroupingHide

2.DA.FerrodimolybdeniteFeMo2S4Mon. 2/m : B2/b
2.DA.ZaykoviteRh3Se4Mon. 2/m : B2/m
2.DA.EzochiiteCu+(Rh3+Pt4+)S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.GrimmiteNiCo2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.ZolenskyiteFeCr2S4Mon. 2/m : B2/m
2.DA.05ShiranuiiteCu+(Rh3+Rh4+)S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05FletcheriteCuNi2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05Florensovite(Cu,Zn)Cr1.5Sb0.5S4Iso. m3m (4/m 3 2/m)
2.DA.05SiegeniteCoNi2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05CadmoinditeCdIn2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05KalininiteZnCr2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05ViolariteFe2+Ni3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05NickeltyrrelliteCuNi2Se4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05LinnaeiteCo2+Co3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05CarrolliteCuCo2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05Cuproiridsite(Cu,Fe)Ir2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05Cuprorhodsite(Cu1+0.5Fe3+0.5)Rh3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05BerndlehmanniteCu(CrV)S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05PolydymiteNi2+Ni3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05DaubréeliteFe2+Cr3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05CuprokalininiteCuCr2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05GreigiteFe2+Fe3+2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05JoegoldsteiniteMnCr2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05BornhardtiteCo2+Co3+2Se4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05TyrrelliteCu(Co,Ni)2Se4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05InditeFeIn2S4Iso. m3m (4/m 3 2/m) : Fd3m
2.DA.05XingzhongitePb2+Ir3+2S4Iso.
2.DA.05MalaniteCu1+(Ir3+Pt4+)S4Iso. m3m (4/m 3 2/m)
2.DA.10RhodostanniteCu1+(Fe2+0.5Sn4+1.5)S4Tet. 4/m : I41/a
2.DA.10ToyohaiteAg1+(Fe2+0.5Sn4+1.5)S4Tet. 4/m : I41/a
2.DA.15BrezinaiteCr3S4Mon. 2/m
2.DA.15Heideite(Fe,Cr)1.15(Ti,Fe)2S4Mon. 2/m
2.DA.20KonderiteCu3Pb(Rh,Pt,Ir)8S16Hex. 6/m : P6/m
2.DA.20InaglyiteCu3Pb(Ir,Pt)8S16Hex.
2.DA.25Kingstonite(Rh,Ir,Pt)3S4Mon. 2/m : B2/m

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 TrüstedtiteHide

References for TrüstedtiteHide

Localities for TrüstedtiteHide

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.

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.
China
 
  • Sichuan
    • Ngawa Autonomous Prefecture (Aba Autonomous Prefecture)
      • Zoigê Co. (Ruo'ergai Co.)
Anthony
Finland
 
  • North Ostrobothnia
Vuorelainen et al. (1964) +1 other reference
Vuorelainen et al. (1964)
Germany
 
  • Saxony-Anhalt
    • Mansfeld-Südharz
      • Mansfeld
Wittern (2001)
UK
 
  • England
    • Devon
      • Torbay
        • Torquay
Stanley et al. (1990) +1 other reference
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