Tyrrellite Mineral Data

Tyrrellite Mineral Data +

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General Tyrrellite Information

Chemical Formula:

(Cu,Co,Ni)3Se4

Composition:

Molecular Weight = 500.87 gm

Cobalt 10.59 % Co

Copper 22.84 % Cu

Nickel 3.52 % Ni

Selenium 63.06 % Se

______

100.00 %

Empirical Formula:

Cu_1.8Co_0.9Ni_0.3Se₄

Environment:

With other selenides as the youngest hydrothermal replacements and open space fillings in sheared Precambrian rocks.

IMA Status:

Valid Species (Pre-IMA) 1952

Locality:

Western part of the Eagle Claims, Beaver Lodge Lake, Goldfields district, Saskatchewan, Canada Link to MinDat.org Location Data.

Name Origin:

Named for Joseph Burr Tyrell (1858-1957), first geologist to visit the area of discovery in Canada.

Tyrrellite Image

Images:

Tyrrellite Umangite

Comments: Bright metallic partial cubic tyrrellite crystal in altering umangite.
Location: Eagle Claims, near Hal Lake, Beaverlodge, Saskatchewan, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tyrrellite Crystallography

Cell Dimensions:

a = 10.005, Z = 8; V = 1,001.50 Den(Calc)= 6.64

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): 1.769(1), 2.501(0.9), 2.886(0.7),

Physical Properties of Tyrrellite

Cleavage:

[001] Distinct

Color:

Bronze.

Diaphaniety:

Opaque

Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

3.5 - Copper Penny

Luster:

Metallic

Streak:

black

Optical Properties of Tyrrellite

RL Color:

Light brassy bronze.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Tyrrellite in Air**
λ	R	∑ R(λ)
400 nm	43.20
420 nm	44.20
440 nm	45.20
460 nm	45.80
480 nm	46.00
500 nm	46.70
520 nm	47.00
540 nm	47.30
560 nm	47.50
580 nm	47.80
600 nm	48.00
620 nm	48.40
640 nm	48.80
660 nm	49.30
680 nm	49.70
700 nm	50.20

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

Calculated Properties of Tyrrellite

Electron Density:

r_electron=5.86 gm/cc
note: r_Tyrrellite=6.64 gm/cc.

Fermion Index

Fermion Index = 0.04832
Boson Index = 0.95168

Photoelectric:

PE_Tyrrellite= 66.51 barns/electron
U=PE_Tyrrellite x r_electron= 389.52 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tyrrellite is Not Radioactive

Tyrrellite Classification

Dana Class:

2.10.1.4 (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.01-140 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 Tyrrellite Information

References:

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

See Also:

Links to other databases for Tyrrellite :
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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Tyrrellite

(Cu,Co,Ni)3Se4
Dana No: 2.10.1.4 Strunz No: II/D.01-140
Locality:

Notes: