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Mummeite Mineral Data
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General Mummeite Information
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 Chemical Formula: |
Cu0.58Ag3.11Pb1.10Bi6.65S13 |
| Composition: |
Molecular Weight = 2,406.82 gm |
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Copper 1.53 % Cu |
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Silver 13.94 % Ag |
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Bismuth 57.74 % Bi |
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Lead 9.47 % Pb |
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Sulfur 17.32 % S |
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______ |
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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 |
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Mummeite Crystallography
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| 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), |
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Physical Properties of Mummeite
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| Cleavage: |
None |
| Color: |
Silver gray. |
| Density: |
6.64 |
| Diaphaneity: |
Opaque |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
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Calculated Properties of Mummeite
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| Electron Density: |
Bulk Density (Electron Density)=5.70 gm/cc
note: Specific Gravity of Mummeite =6.77 gm/cc.
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| 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.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mummeite is Not Radioactive |
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Mummeite Classification
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| Dana Class: |
03.08.10.04 (03)Sulfides - Sulfosalts |
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(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.08.10)Pavonite Group (Monoclinic: C/2c bismuth sulfosalts) |
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03.08.10.01 Pavonite (Ag,Cu)(Bi,Pb)3S5 C 2/c 2/m |
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03.08.10.02 Makovickyite Ag1.5Bi5.5S9 C 2/c 2/m |
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03.08.10.03 Benjaminite (Ag,Cu)3(Bi,Pb)7S12 C 2/c 2/m |
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03.08.10.04 Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m |
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03.08.10.05 Borodaevite Ag5(Bi,Sb)9S16 C 2/c 2/m |
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03.08.10.06 Cupropavonite AgPbCu2Bi5S10 C 2/c 2/m |
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03.08.10.07 Cupromakovickyite! Cu4AgPb2Bi9S18 C 2/m 2/m |
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03.08.10.08 Kudriavite! (Cd,Pb)Bi2S4 C 2/m 2/m |
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03.08.10.09 IMA2008-058! Ag5Bi13S22 C 2/m 2/m |
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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 |
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02.J - Sulfosalts of PbS Archetype |
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02.JA -Galena derivatives with little or no Pb |
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02.JA.05f Mummeite Cu0.58Ag3.11Pb1.10Bi6.65S13 C 2/c 2/m |
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Other Mummeite Information
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| 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
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Print or Cut-and-Paste your Mummeite Specimen Label here :
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Mummeite
Cu0.58Ag3.11Pb1.10Bi6.65S13
Dana No: 03.08.10.04 Strunz No: 02.JA.05f
Locality:
Notes:
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