Trustedtite Mineral Data

Trustedtite Mineral Data +

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General Trustedtite Information

Chemical Formula:

Ni3Se4

Composition:

Molecular Weight = 491.91 gm

Nickel 35.79 % Ni

Selenium 64.21 % Se

______

100.00 %

Empirical Formula:

Ni₃Se₄

Environment:

In calcite- and uranium-bearing veins in sills of albite diabase in schist. Imbedded in clausthalite.

IMA Status:

Approved IMA 1964

Locality:

Kuusamo, northeastern Finland. Link to MinDat.org Location Data.

Name Origin:

Named for O. Trustedt, whose work on prospecting methods lead to the discovery of the Outokumpu ore deposit, Finland.

Synonym:

Truestedtite

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Trustedtite Crystallography

Cell Dimensions:

a = 9.94, Z = 8; V = 982.11 Den(Calc)= 6.65

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 1.755(1), 2.48(1), 3(0.8),

Physical Properties of Trustedtite

Color:

Yellow.

Diaphaniety:

Opaque

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Inclusions - Generally found as inclusions in other minerals.

Hardness:

2.5 - Finger Nail

Luster:

Metallic

Optical Properties of Trustedtite

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Trustedtite in Air**
λ	R	∑ R(λ)
400 nm	42.20
420 nm	43.60
440 nm	45.00
460 nm	46.40
480 nm	47.50
500 nm	48.50
520 nm	49.40
540 nm	50.30
560 nm	51.20
580 nm	52.00
600 nm	52.60
620 nm	53.10
640 nm	53.80
660 nm	54.30
680 nm	54.90
700 nm	55.40

**Calculated Relative Intensity Colors of Trustedtite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	200%
R

Calculated Properties of Trustedtite

Electron Density:

r_electron=5.95 gm/cc
note: r_Trustedtite=6.65 gm/cc.

Fermion Index

Fermion Index = 0.05284
Boson Index = 0.94716

Photoelectric:

PE_Trustedtite= 65.87 barns/electron
U=PE_Trustedtite x r_electron= 391.79 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Trustedtite is Not Radioactive

Trustedtite Classification

Dana Class:

2.10.1.9 (2)Sulfides - Including Selenides and Tellurides

(2.10)where Am Bn Xp, with (m+n):p=3:4

(2.10.1)Linnaeite Group (Isometric: Fd3m)

2.10.1.1 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

2.10.1.2 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

2.10.1.3 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

2.10.1.4 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

2.10.1.5 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

2.10.1.6 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

2.10.1.7 Polydymite NiNi2S4 F d3m 4/m 3 2/m

2.10.1.8 Violarite FeNi2S4 F d3m 4/m 3 2/m

2.10.1.9 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

2.10.1.10 Greigite FeFe2S4 F d3m 4/m 3 2/m

2.10.1.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

2.10.1.12 Indite FeIn2S4 F d3m 4/m 3 2/m

2.10.1.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

2.10.1.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

2.10.1.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

2.10.1.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

2.10.1.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

2.10.1.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

2.10.1.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

Strunz Class:

II/D.01-130 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.01 - Linneite group and related compounds

II/D.01-10 Greigite FeFe2S4 F d3m 4/m 3 2/m

II/D.01-20 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

II/D.01-30 Polydymite NiNi2S4 F d3m 4/m 3 2/m

II/D.01-40 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

II/D.01-50 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

II/D.01-60 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

II/D.01-70 Violarite FeNi2S4 F d3m 4/m 3 2/m

II/D.01-80 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

II/D.01-90 Indite FeIn2S4 F d3m 4/m 3 2/m

II/D.01-95 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

II/D.01-100 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

II/D.01-110 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

II/D.01-120 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

II/D.01-130 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

II/D.01-140 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

Other Trustedtite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Trustedtite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Print or Cut-and-Paste your Trustedtite Specimen Label here :

Trustedtite

Ni3Se4
Dana No: 2.10.1.9 Strunz No: II/D.01-130
Locality:

Notes: