Paderaite Mineral Data

Paderaite Mineral Data +

[Localities] [Carat Weight] [Special Collections] [Diamond Lots] [Ordering Info]
See Also: [Excalibur Minerals] [Mineral News] [Hudson Institute] [Minerals on CDROM]
Special Collections of Rough Diamonds for Researchers and Collectors
Unparalled diversity of specimens from different locations

General Paderaite Information

Chemical Formula:

AgPb2Cu6Bi11S22

Composition:

Molecular Weight = 3,907.78 gm

Copper 9.76 % Cu

Silver 2.76 % Ag

Bismuth 58.83 % Bi

Lead 10.60 % Pb

Sulfur 18.05 % S

______

100.00 %

Empirical Formula:

AgPb₂Cu₆Bi₁₁S₂₂

Environment:

Intimately intergrown with other Pb-Bi sulfosalts.

IMA Status:

Approved IMA 1985

Locality:

Baita (Resbanya), Romania. Link to MinDat.org Location Data.

Name Origin:

Named for K. Padera, Charles University, Prague, Czechoslovakia.

Synonym:

ICSD 63260

PDF 42-617

Search for Paderaite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Paderaite Crystallography

Axial Ratios:

a:b:c =7.2:1:4.443

Cell Dimensions:

a = 28.44, b = 3.95, c = 17.55, Z = 2; beta = 106.1° V = 1,894.21 Den(Calc)= 6.85

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

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

By Intensity(I/I_o): 3.06(1), 3.63(0.74), 3.21(0.54),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Mumme W G , The Canadian Mineralogist , 24 (1986) p.513-521, The crystal structure of paderaite, a mineral of the cuprobismutite series.

View Additional jPOWD Structure files for Paderaite
[1] [2]

Physical Properties of Paderaite

Color:

Black, Steel gray.

Density:

6.91

Diaphaniety:

Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

4 - Fluorite

Luster:

Metallic

Streak:

lead gray

Optical Properties of Paderaite

RL Anisotrophism:

Moderate.

RL Color:

Creamy white.

Calculated Properties of Paderaite

Electron Density:

r_electron=5.78 gm/cc
note: r_Paderaite=6.85 gm/cc.

Fermion Index

Fermion Index = 0.02479
Boson Index = 0.97521

Photoelectric:

PE_Paderaite=1,327.22 barns/electron
U=PE_Paderaite x r_electron=7,677.47 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Paderaite is Not Radioactive

Paderaite Classification

Dana Class:

3.8.4.2 (3)Sulfides - Sulfosalts

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

(3.8.4)Dana Group

3.8.4.1 Hodrushite Cu8Bi12S22 A2/m 2/m

3.8.4.2 Paderaite AgPb2Cu6Bi11S22 P 2₁/m 2/m

Strunz Class:

II/E.34-100 II - Sulfides and sulphosalts

II/E - Sulfosalts (S : As,Sb,Bi = x) Lead-Sulfosalts (Pb-Cu/Ag) with predominant Vismut x = 6.0 - 1.6

II/E.34 - Cosalite - Galenobismuthite

II/E.34-08 Mozgovaite! PbBi4(S,Se)7 Bbmm 2/m 2/m 2/m

II/E.34-10 Cosalite Pb2Bi2S5 Pbnm 2/m 2/m 2/m

II/E.34-20 Proudite (Pb,Cu)8Bi9-10(S,Se)22 C 2/m 2/m

II/E.34-30 Weibullite Pb6Bi8(S,Se)18 P nma 2/m 2/m 2/m

II/E.34-60 Cannizzarite Pb4Bi6S13 C 2/m 2/m

II/E.34-65 Wittite Pb3Bi4(S,Se)9 P 2/m 2/m

II/E.34-70 Nordstromite Pb3CuBi7(S10Se4) P 2₁/m 2/m

II/E.34-80 Junoite Pb3Cu2Bi8(S,Se)16 C 2/m 2/m

II/E.34-85 Felbertalite! Cu2Pb6Bi8S19 C 2/m 2/m

II/E.34-90 Watkinsonite PbCu2Bi4(Se,S)8 Pm ? m

II/E.34-100 Paderaite AgPb2Cu6Bi11S22 P 2₁/m 2/m

II/E.34-110 Galenobismutite PbBi2S4 Pnam 2/m 2/m 2/m

Other Paderaite Information

References:

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

See Also:

Links to other databases for Paderaite :
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

Search for Paderaite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Paderaite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Paderaite Mineral Data :

Ask about Paderaite 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 Paderaite Specimen Label here :

Paderaite

AgPb2Cu6Bi11S22
Dana No: 3.8.4.2 Strunz No: II/E.34-100
Locality:

Notes: