Spionkopite Mineral Data

Spionkopite Mineral Data +

General Spionkopite Information

Chemical Formula:

Cu1.4S

Composition:

Molecular Weight = 121.03 gm

Copper 73.51 % Cu

Sulfur 26.49 % S

______

100.00 %

Empirical Formula:

Cu_1.4S

Environment:

Red bed copper deposit.

IMA Status:

Approved IMA 1980

Locality:

Spionkop Creek and Yarrow Creek areas of southwestern Alberta, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

IMA1978-023

Spionkopite Image

Images:

Spionkopite Yarrowite

Comments: Blue-black metallic granular spionkopite, intermixed with yarrowite altering, with quartz.
Location: Yarrow Creek, Alberta, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Spionkopite Yarrowite

Comments: Blue-gray metallic yarrowite grains in granular quartz rock with spionkopite.
Location: Yarrow Creek, Alberta, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Spionkopite Crystallography

Axial Ratios:

a:c = 1:1.80424

Cell Dimensions:

a = 22.962, c = 41.429, Z = 504; V = 18,917.10 Den(Calc)= 5.35

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3m1 ?

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

By Intensity(I/I_o): 1.91(1), 3.076(0.85), 2.777(0.3),

Physical Properties of Spionkopite

Color:

Black, Blue.

Density:

5.13

Diaphaniety:

Opaque

Habit:

Tarnishes - Freshly fractured surfaces form a surface oxidation film

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Metallic

Optical Properties of Spionkopite

RL Anisotrophism:

Orange.

RL Pleochroism:

Blue to bluish white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Spionkopite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	26.10	33.40
420 nm	25.80	32.90
440 nm	25.10	32.30
460 nm	24.20	31.40
480 nm	23.00	30.50
500 nm	21.80	29.50
520 nm	20.50	28.50
540 nm	19.00	27.40
560 nm	17.60	26.40
580 nm	16.30	25.40
600 nm	14.90	24.40
620 nm	13.60	23.80
640 nm	12.40	23.80
660 nm	11.20	24.30
680 nm	10.00	24.60
700 nm	9.06	24.30

**Calculated Relative Intensity Colors of Spionkopite in Air**
Relative Intensity	0%	60%	100%	120%	180%	240%	300%	360%	420%	480%	540%	600%
R₁
R₂

Calculated Properties of Spionkopite

Electron Density:

r_electron=5.00 gm/cc
note: r_Spionkopite=5.35 gm/cc.

Fermion Index

Fermion Index = 0.00198
Boson Index = 0.99802

Photoelectric:

PE_Spionkopite= 34.51 barns/electron
U=PE_Spionkopite x r_electron= 172.68 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Spionkopite is Not Radioactive

Spionkopite Classification

Dana Class:

2.4.7.7 (2)Sulfides - Including Selenides and Tellurides

(2.4)where Am Bn Xp, with (m+n):p=2:1

(2.4.7)Chalcocite Group ([Cu]2-x S] formulae)

2.4.7.1 Chalcocite Cu2S P 2₁/c 2/m

2.4.7.2 Djurleite Cu31S16 P 2₁/n 2/m

2.4.7.3 Digenite Cu9S5 R 3m 3 2/m

2.4.7.4 Roxbyite Cu1.78S C 2/m 2/m

2.4.7.5 Anilite Cu7S4 P nma 2/m 2/m 2/m

2.4.7.6 Geerite Cu8S5 R 3m, R 3m, or R 32 Trig

2.4.7.7 Spionkopite Cu1.4S P 3m1 ? 3m

Strunz Class:

II/B.01-70 II - Sulfides and sulphosalts

II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Coppersulfides Chalcocite group

II/B.01 - Chalcocite - Yarrowite series

II/B.01-10 Chalcocite Cu2S P 2₁/c 2/m

II/B.01-20 Djurleite Cu31S16 P 2₁/n 2/m

II/B.01-30 Digenite Cu9S5 R 3m 3 2/m

II/B.01-40 Roxbyite Cu1.78S C 2/m 2/m

II/B.01-50 Anilite Cu7S4 P nma 2/m 2/m 2/m

II/B.01-60 Geerite Cu8S5 R 3m, R 3m, or R 32 Trig

II/B.01-70 Spionkopite Cu1.4S P 3m1 ? 3m

II/B.01-80 Yarrowite Cu9S8 P 3m1 ? 3m

Other Spionkopite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Spionkopite :
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 -École des Mines de Paris

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Spionkopite

Cu1.4S
Dana No: 2.4.7.7 Strunz No: II/B.01-70
Locality:

Notes: