Proudite Mineral Data

General Proudite Information

Chemical Formula:

Cu1.9Ag0.1Pb15.6Bi20.4Sb0.1S32.4Se14.5

Composition:

Molecular Weight = 9,823.08 gm

Copper 1.23 % Cu

Silver 0.11 % Ag

Bismuth 43.40 % Bi

Antimony 0.12 % Sb

Lead 32.91 % Pb

Selenium 11.66 % Se

Sulfur 10.58 % S

______

100.00 %

Empirical Formula:

Cu_1.9Ag_0.1Pb_15.6Bi_20.4Sb_0.1S_32.4Se_14.5

Environment:

With large, presumably hydrothermal magnetite bodies.

IMA Status:

Approved IMA 1976

Locality:

Juno mine, Tennant Creek, Northern Territory, Australia. Link to MinDat.org Location Data.

Name Origin:

Named for J. S. Proud, a Director of the Peko-Wallsend mining.

Name Pronunciation:

Proudite

Synonym:

ICSD 30778

PDF 30-491

Proudite Image

Images:

Proudite

Comments: BSE image of proudite aggregates from Tennant Creek, Australia. Pr = proudite, light grey: J = junoite, G = gangue and holes. (CanMin v47:25).
Location: Juno mine, Tennant Creek, Northern Territory, Australia. Scale: See Image.
© Canadian Mineralogist

Proudite Crystallography

Axial Ratios:

a:b:c =7.7591:1:8.9166

Cell Dimensions:

a = 31.814, b = 4.1002, c = 36.56, Z = 2; beta = 109.266° V = 4,501.94 Den(Calc)= 7.25

Crystal System:

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

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

By Intensity(I/I_o): 2.96(1), 2.059(0.86), 3.494(0.65),

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
P - Polyhedra On/Off
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Mumme W G , American Mineralogist , 61 (1976) p.839-852, Proudite from Tennant Creek, Northern Territory, Australia: Its crystal, structure and relationship with weibullite and wittite

Physical Properties of Proudite

Cleavage:

{hk0} Good

Color:

Silver gray.

Density:

7.12

Diaphaneity:

Opaque

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Metallic

Optical Properties of Proudite

Optical Data:

NCalc= 1.9 - from Gladstone-Dale relationship (KC = 0.1246) where Ncalc=Dcalc*KC+1
NCalc= 1.89 - from Gladstone-Dale relationship (KC = 0.1246) where Ncalc=Dmeas*KC+1

RL Anisotrophism:

Straong cream-gray to tan.

RL Color:

Creamy white.

RL Pleochroism:

Strong cream-white to white.

Calculated Properties of Proudite

Electron Density:

Bulk Density (Electron Density)=5.98 gm/cc
note: Specific Gravity of Proudite =7.25 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Proudite=1,472.01 barns/electron
U=PE_Proudite x rElectron Density=8,797.23 barns/cc.

Radioactivity:

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

Proudite Classification

Dana Class:

03.06.01.01 (03)Sulfides - Sulfosalts

(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.06.01)Dana Group

03.06.01.01 Proudite Cu1.9Ag0.1Pb15.6Bi20.4Sb0.1S32.4Se14.5 C 2/m 2/m

Strunz Class:

02.JB.25d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.25d Proudite Cu1.9Ag0.1Pb15.6Bi20.4Sb0.1S32.4Se14.5 C 2/m 2/m

Other Proudite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1, CanMin v47:25) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Proudite :
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
15 - WWW-MINCRYST

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Ask about Proudite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Proudite Specimen Label here :

Proudite

Cu1.9Ag0.1Pb15.6Bi20.4Sb0.1S32.4Se14.5
Dana No: 03.06.01.01 Strunz No: 02.JB.25d
Locality:

Notes: