Vinciennite Mineral Data

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General Vinciennite Information

Chemical Formula:

Cu10Fe4Sn(As,Sb)S16

Composition:

Molecular Weight = 1,588.95 gm

Iron 14.06 % Fe

Copper 39.99 % Cu

Tin 7.47 % Sn

Antimony 3.83 % Sb

Arsenic 2.36 % As

Sulfur 32.29 % S

______

100.00 %

Empirical Formula:

Cu₁₀Fe²⁺₄SnAs_0.5Sb_0.5S₁₆

Environment:

In a porphyry copper deposit with other tin-bearing sufides (Maggie deposit).

IMA Status:

Approved IMA 1985

Locality:

Chizeuil, Saoneet-Loire, France and Maggie copper deposit, 15 km north of Ascroft, British Columbia, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Henri Vincienne (1898-1965), French mineralogist.

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Vinciennite Crystallography

Axial Ratios:

a:c = 1:1

Cell Dimensions:

a = 10.697, c = 10.697, Z = 2; V = 1,224.01 Den(Calc)= 4.31

Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 4₁22

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

By Intensity(I/I_o): 3.088(1), 1.895(0.9), 1.614(0.7),

Physical Properties of Vinciennite

Cleavage:

None

Color:

Orange.

Density:

4.29

Diaphaniety:

Opaque

Fracture:

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

Habit:

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

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Metallic

Optical Properties of Vinciennite

Optical Data:

NCalc= 1.6 - from Gladstone-Dale relationship (KC = 0.1394) where Ncalc=Dcalc*KC+1
NCalc= 1.6 - from Gladstone-Dale relationship (KC = 0.1394) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Weak, purplish blue to greenish brown yellow.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Vinciennite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
420 nm	19.40	19.40
460 nm	21.80	20.60
500 nm	23.90	22.80
540 nm	27.70	26.50
580 nm	30.70	29.50
620 nm	33.60	32.10
660 nm	35.90	34.30
700 nm	37.80	36.00

**Calculated Relative Intensity Colors of Vinciennite in Air**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	430%
R₁
R₂

Calculated Properties of Vinciennite

Electron Density:

r_electron=4.03 gm/cc
note: r_Vinciennite=4.31 gm/cc.

Fermion Index

Fermion Index = 0.01781
Boson Index = 0.98219

Photoelectric:

PE_Vinciennite= 59.89 barns/electron
U=PE_Vinciennite x r_electron= 241.08 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Vinciennite is Not Radioactive

Vinciennite Classification

Dana Class:

3.1.2.1 (3)Sulfides - Sulfosalts

(3.1)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.1.2)Dana Group

3.1.2.1 Vinciennite Cu10Fe4Sn(As,Sb)S16 P 4₁22 4 2 2

Strunz Class:

II/C.10-15 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.10 - Stannite group, Germanite series

II/C.10-10 Renierite (Cu,Zn)11(Ge,As)2Fe4S16 P 4₂c- 4 2m

II/C.10-15 Vinciennite Cu10Fe4Sn(As,Sb)S16 P 4₁22 4 2 2

II/C.10-20 Germanite Cu26Fe4Ge4S32 P 43n 4 3m

II/C.10-30 Nekrasovite Cu26V2(Sn,As,Sb)6S32 P 43n 4 3m

II/C.10-40 Colusite Cu12-13V(As,Sb,Sn,Ge)3S16 P 43n 4 3m

II/C.10-45 Stibiocolusite Cu13V(Sb,As,Sn)3S16 P 43n 4 3m

II/C.10-47 Germanocolusite Cu13V(Ge,As)3S16 P 43n 4 3m

II/C.10-50 Arsenosulvanite Cu3(As,V)S4 P 43m 4 3m

II/C.10-50* Maikainite! Cu20(Fe,Cu)6Mo2Ge6S32 P 43n 4 3m

II/C.10-55 Ovamboite! Cu20(Fe,Cu,Zn)6W2Ge6S32 P 43n 4 3m

II/C.10-60 Sulvanite Cu3VS4 P 43m 4 3m

II/C.10-70 Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 F d3m 4/m 3 2/m

II/C.10-80 Morozeviczite (Pb,Fe)3Ge1-xS4 F d3m 4/m 3 2/m

Other Vinciennite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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Vinciennite

Cu10Fe4Sn(As,Sb)S16
Dana No: 3.1.2.1 Strunz No: II/C.10-15
Locality:

Notes: