Cupropavonite Mineral Data

General Cupropavonite Information

Chemical Formula:

AgPbCu2Bi5S10

Composition:

Molecular Weight = 1,807.72 gm

Copper 7.03 % Cu

Silver 5.97 % Ag

Bismuth 57.80 % Bi

Lead 11.46 % Pb

Sulfur 17.74 % S

______

100.00 %

Empirical Formula:

AgPbCu₂Bi₅S₁₀

Environment:

Found in zoned mesothermal base- and precious-metal veins.

IMA Status:

Approved IMA 1979

Locality:

In the USA, from the Alaska mine, Poughkeepsie Gulch, near Ouray, San Juan Co., and at the Missouri mine, Hall's Valley, Park Co., Colorado. Link to MinDat.org Location Data.

Name Origin:

To stress a similarity with pavonite.

Cupropavonite Image

Images:

Cupropavonite

Comments: BSE image of pavonite matrix (light gray) showing thin exsolution lamellea of cupropavonite (darker gray, C). (Axis, Volume 2, Number 4 (2006)).
Location: Lucky Lucy mine, Darwin mining district, Inyo County, California, USA. Scale: Gail E. Dunning / Mineralogical Record.
© Mineralogical Record

Cupropavonite Crystallography

Axial Ratios:

a:b:c =3.3457:1:8.2238

Cell Dimensions:

a = 13.45, b = 4.02, c = 33.06, Z = 4; beta = 93.5° V = 1,784.19 Den(Calc)= 6.73

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c

Physical Properties of Cupropavonite

Cleavage:

None

Color:

Gray, Tin white.

Diaphaneity:

Opaque

Hardness:

2 - Gypsum

Luster:

Metallic

Streak:

lead gray

Optical Properties of Cupropavonite

RL Anisotrophism:

Distinct.

RL Color:

White.

RL Pleochroism:

Weak in air, weak to distinct in oil.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Cupropavonite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	45.10	48.20
420 nm	45.00	48.80
440 nm	45.00	49.40
460 nm	44.60	49.80
480 nm	44.40	50.20
500 nm	43.90	50.00
520 nm	43.40	49.10
540 nm	43.00	48.20
560 nm	42.50	47.50
580 nm	42.20	46.90
600 nm	42.10	46.40
620 nm	42.00	46.40
640 nm	41.90	46.20
660 nm	41.70	46.10
680 nm	41.60	46.00
700 nm	41.20	45.60

**Calculated Relative Intensity Colors of Cupropavonite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%
R₁
R₂

Calculated Properties of Cupropavonite

Electron Density:

Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Cupropavonite =6.73 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Cupropavonite}=1,332.82 barns/electron
U=PE_{Cupropavonite} x rElectron Density=7,562.06 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cupropavonite is Not Radioactive

Cupropavonite Classification

Dana Class:

03.08.10.06 (03)Sulfides - Sulfosalts

(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.08.10)Pavonite Group (Monoclinic: C/2c bismuth sulfosalts)

03.08.10.01 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

03.08.10.02 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m

03.08.10.03 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m

03.08.10.04 Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m

03.08.10.05 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m

03.08.10.06 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

03.08.10.07 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m

03.08.10.08 Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m

03.08.10.09 IMA2008-058! Ag5Bi13S22 C 2/m 2/m

03.08.10.10 IMA2005-036! Cu8Pb4Ag3Bi19S38 C 2/m 2/m

Strunz Class:

02.JA.05a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JA -Galena derivatives with little or no Pb

02.JA.05a Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

02.JA.05a Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

02.JA.05a IMA2005-036! Cu8Pb4Ag3Bi19S38 C 2/m 2/m

02.JA.05a IMA2008-058! Ag5Bi13S22 C 2/m 2/m

Other Cupropavonite Information

References:

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

See Also:

Links to other databases for Cupropavonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Cupropavonite

AgPbCu2Bi5S10
Dana No: 03.08.10.06 Strunz No: 02.JA.05a
Locality:

Notes:

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