Pavonite Mineral Data

Pavonite Mineral Data +

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General Pavonite Information

Chemical Formula:

(Ag,Cu)(Bi,Pb)3S5

Composition:

Molecular Weight = 882.72 gm

Copper 1.80 % Cu

Silver 9.16 % Ag

Bismuth 53.27 % Bi

Lead 17.60 % Pb

Sulfur 18.16 % S

______

100.00 %

Empirical Formula:

Ag_0.75Cu_0.25Bi_2.25Pb_0.75S₅

Environment:

In hydrothermal vein deposits

IMA Status:

Valid Species (Pre-IMA) 1954

Locality:

Bolivar mine, Cerro Bonete, Bolivia. Link to MinDat.org Location Data.

Name Origin:

Named from the Latin "pavo", peacock, which honored Professor Martin Alfred Peacock (1898-1950), a Canadian mineralogist.

Pavonite Image

Images:

Pavonite

Comments: Silvery metallic pavonite masses with brassy pyrite.
Location: Alaska Mine, San Juan County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Pavonite Crystallography

Axial Ratios:

a:b:c =3.301:1:4.047

Cell Dimensions:

a = 13.333, b = 4.039, c = 16.346, Z = 4; beta = 94.21° V = 877.89 Den(Calc)= 6.68

Crystal System:

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

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

By Intensity(I/I_o): 2.849(1), 3.464(1), 3.594(0.9),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
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Makovicky E , Mumme W G , Watts J A , The Canadian Mineralogist , 15 (1977) p.339-348, The crystal structure of synthetic pavonite, AgBi3S5, and, the definition of the pavonite homologous series

Physical Properties of Pavonite

Cleavage:

[???] Indistinct

Color:

Lead gray, Tin white.

Density:

6.8

Diaphaniety:

Opaque

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

2 - Gypsum

Luster:

Metallic

Streak:

lead gray

Optical Properties of Pavonite

RL Anisotrophism:

Strong, in pale to intense blue and light tan to brown..

RL Color:

White.

RL Pleochroism:

Strong, gray-pink-white and blue-gray-white in oil.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Pavonite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	46.30	50.70
420 nm	46.10	50.50
440 nm	45.90	50.30
460 nm	45.60	50.00
480 nm	45.30	49.80
500 nm	45.00	49.50
520 nm	44.50	49.00
540 nm	44.00	48.40
560 nm	43.40	47.80
580 nm	42.90	47.30
600 nm	42.50	47.00
620 nm	42.20	46.70
640 nm	42.00	46.40
660 nm	41.90	46.20
680 nm	41.70	46.00
700 nm	41.60	45.80

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

Calculated Properties of Pavonite

Electron Density:

r_electron=5.61 gm/cc
note: r_Pavonite=6.68 gm/cc.

Fermion Index

Fermion Index = 0.04026
Boson Index = 0.95974

Photoelectric:

PE_Pavonite=1,369.11 barns/electron
U=PE_Pavonite x r_electron=7,682.47 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pavonite is Not Radioactive

Pavonite Classification

Dana Class:

3.8.10.1 (3)Sulfides - Sulfosalts

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

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

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

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

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

3.8.10.4 Mummeite Ag3CuPbBi6S13orAg2Cu2Pb2Bi6S13 C 2/c 2/m

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

3.8.10.6 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

3.8.10.7 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m

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

Strunz Class:

II/E.09-30 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Sulfosalts with predominant Silver, x = 6.0 - 1.6

II/E.09 - Benjaminite - Kitaibelite series

II/E.09-05 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m

II/E.09-10 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m

II/E.09-20 Mummeite Ag3CuPbBi6S13orAg2Cu2Pb2Bi6S13 C 2/c 2/m

II/E.09-30 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m

II/E.09-40 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m

II/E.09-50 Kitaibelite* Ag10PbBi30S51 Mono ? Mono

II/E.09-60 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m

Other Pavonite Information

References:

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

See Also:

Links to other databases for Pavonite :
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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Pavonite

(Ag,Cu)(Bi,Pb)3S5
Dana No: 3.8.10.1 Strunz No: II/E.09-30
Locality:

Notes: