|
|
Mummeite Mineral Data
|
|
|
General Mummeite Information
|
Chemical Formula: |
Cu0.58Ag3.11Pb1.10Bi6.65S13 |
Composition: |
Molecular Weight = 2,406.82 gm |
|
Copper 1.53 % Cu |
|
Silver 13.94 % Ag |
|
Bismuth 57.74 % Bi |
|
Lead 9.47 % Pb |
|
Sulfur 17.32 % S |
|
______ |
|
100.00 % |
Empirical Formula: |
Cu0.58Ag3.11Pb1.1Bi6.65S13 |
IMA Status: |
Approved IMA 1986 |
Locality: |
Alaska mine, Poughkeepsie Gulch, Silverton, Colorado, United States. Link to MinDat.org Location Data. |
Name Origin: |
Named in 1986 for William G. Mumme (b.1936), Australian mineralogist. |
Name Pronunciation: |
Mummeite |
Synonym: |
IMA1986-025 |
|
Mummeite Crystallography
|
Axial Ratios: |
a:b:c =3.3177:1:5.3275 |
Cell Dimensions: |
a = 13.47, b = 4.06, c = 21.63, Z = 2; beta = 92.9° V = 1,181.39 Den(Calc)= 6.77 |
Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c |
X Ray Diffraction: |
By Intensity(I/Io): 2.023(1), 2.863(1), 3.53(0.5), |
|
Physical Properties of Mummeite
|
Cleavage: |
None |
Color: |
Silver gray. |
Density: |
6.64 |
Diaphaneity: |
Opaque |
Hardness: |
4 - Fluorite |
Luster: |
Metallic |
|
Calculated Properties of Mummeite
|
Electron Density: |
Bulk Density (Electron Density)=5.70 gm/cc note: Specific Gravity of Mummeite =6.77 gm/cc. |
Fermion Index: |
Fermion Index = 0.02 Boson Index = 0.98 |
Photoelectric: |
PEMummeite =1,315.97 barns/electron U=PEMummeite x rElectron Density=7,500.49 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mummeite is Not Radioactive |
|
Mummeite Classification
|
Dana Class: |
03.08.10.04 (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.05f 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.05f Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m |
|
Other Mummeite Information
|
References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p847,1993) |
See Also: |
Links to other databases for Mummeite :
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
Search for Mummeite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Mummeite :
Ask about Mummeite 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
Espaņol
Print or Cut-and-Paste your Mummeite Specimen Label here :
Mummeite
Cu0.58Ag3.11Pb1.10Bi6.65S13
Dana No: 03.08.10.04 Strunz No: 02.JA.05f
Locality:
Notes:
|
|
|
|
|
|
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.