Argentotennantite Mineral Data

Argentotennantite Mineral Data +

General Argentotennantite Information

Chemical Formula:

(Ag,Cu)10(Zn,Fe)2(As,Sb)4S13

Composition:

Molecular Weight = 1,857.26 gm

Zinc 5.28 % Zn

Iron 1.50 % Fe

Copper 8.55 % Cu

Silver 43.56 % Ag

Antimony 6.56 % Sb

Arsenic 12.10 % As

Sulfur 22.44 % S

______

100.00 %

Empirical Formula:

Ag_7.5Cu_2.5Zn_1.5Fe²⁺_0.5As₃SbS₁₃

Environment:

In a polymetallic deposit.

IMA Status:

Approved IMA 1986

Locality:

In the Kvartsitoviye Gorki deposit, northern Kazakhstan, USSR. Link to MinDat.org Location Data.

Name Origin:

For the chemical composition and by analogy to tennantite.

Synonym:

ICSD 39692

PDF 45-1351

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Argentotennantite Crystallography

Cell Dimensions:

a = 10.584, Z = 2; V = 1,185.63 Den(Calc)= 5.20

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43m

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

By Intensity(I/I_o): 3.06(1), 1.869(0.8), 1.595(0.4),

Physical Properties of Argentotennantite

Cleavage:

None

Color:

Gray, Black.

Diaphaniety:

Opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

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

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3.5 - Copper Penny

Luster:

Resinous

Streak:

red brown

Optical Properties of Argentotennantite

RL Color:

Light gray to greenish gray.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Argentotennantite in Air**
λ	R	∑ R(λ)
400 nm	30.90
420 nm	30.90
440 nm	30.80
460 nm	30.70
480 nm	30.50
500 nm	30.40
520 nm	30.40
540 nm	30.40
560 nm	30.40
580 nm	30.30
600 nm	29.90
620 nm	29.40
640 nm	28.80
660 nm	28.40
680 nm	28.20
700 nm	27.80

**Calculated Relative Intensity Colors of Argentotennantite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	300%
R

Calculated Properties of Argentotennantite

Electron Density:

r_electron=4.71 gm/cc
note: r_{Argentotennantite}=5.20 gm/cc.

Fermion Index

Fermion Index = 0.00416
Boson Index = 0.99584

Photoelectric:

PE_{Argentotennantite}= 148.07 barns/electron
U=PE_{Argentotennantite} x r_electron= 697.30 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Argentotennantite is Not Radioactive

Argentotennantite Classification

Dana Class:

3.3.6.7 (3)Sulfides - Sulfosalts

(3.3)where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(3.3.6)Tetrahedrite Group (Isometric: I4¯3m)

3.3.6.1 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m

3.3.6.2 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m

3.3.6.3 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m

3.3.6.4 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m

3.3.6.5 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m

3.3.6.6 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m

3.3.6.7 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m

Strunz Class:

II/C.11-20 II - Sulfides and sulphosalts

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

II/C.11 - Tetrahedrite group

II/C.11-10 Tennantite (Cu,Fe)12As4S13 I 43m 4 3m

II/C.11-20 Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 I 43m 4 3m

II/C.11-30 Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 I 43m 4 3m

II/C.11-40 Tetrahedrite (Cu,Fe)12Sb4S13 I 43m 4 3m

II/C.11-50 Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 I 43m 4 3m

II/C.11-60 Goldfieldite Cu12(Te,Sb,As)4S13 I 43m 4 3m

II/C.11-70 Hakite (Cu,Hg)3(Sb,As)(Se,S)3 I 43m 4 3m

II/C.11-75 Mgriite Cu3AsSe3 F d3m 4/m 3 2/m

II/C.11-80 Chameanite (Cu,Fe)4As(Se,S)4 I 43m 4 3m

Other Argentotennantite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.73,p439,1988) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Argentotennantite :
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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Argentotennantite

(Ag,Cu)10(Zn,Fe)2(As,Sb)4S13
Dana No: 3.3.6.7 Strunz No: II/C.11-20
Locality:

Notes: