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Mummeite

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Alaska mine, Poughkeepsie Gulch, Silverton District, San Juan Co., Colorado, USA
© 2004 ROM

Formula:
Ag
 
2
CuPbBi
 
6
S
 
13
System:MonoclinicHardness:4


Named for W. Gus Mumme (CSIRO, Melbourne, Australia)

Classification of Mummeite

IMA status:Approved
Strunz 8th edition ID:2/E.09-20
Nickel-Strunz 10th (pending) edition ID:2.JA.05f

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb
Dana 8th edition ID:3.8.10.4

3 : SULFOSALTS
8 : 1 < ø < 2
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Type Occurrence of Mummeite

Type Locality:Alaska mine, Poughkeepsie Gulch, Silverton District, San Juan Co., Colorado, USA
Year of Discovery:1986

Physical Properties of Mummeite

Hardness (Mohs):4

Crystallography of Mummeite

Crystal System:Monoclinic
Cell Parameters:a = 13.47Å, b = 4.06Å, c = 21.63Å
β = 92.91°
Ratio:a:b:c = 3.318 : 1 : 5.328
Unit Cell Volume:V 1,181.38 ų (Calculated from Unit Cell)

Chemical Properties of Mummeite

Formula:
Ag
 
2
CuPbBi
 
6
S
 
13
Essential elements:Ag, Bi, Cu, Pb, S
All elements listed in formula:Ag, Bi, Cu, Pb, S

Relationship of Mummeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.JA.05eBenjaminite
(Ag,Cu)
 
3
(Bi,Pb)
 
7
S
 
12
2.JA.05gBorodaevite
Ag
 
5
(Bi,Pb,Fe)
 
8
(Sb,Bi)
 
2
S
 
17
2.JA.05aCupropavonite
AgCu
 
2
PbBi
 
5
S
 
10
2.JA.05aKitaibelite
Ag
 
10
PbBi
 
30
S
 
51
2.JA.05iLivingstonite
HgSb
 
4
S
 
8
2.JA.05dMakovickyite
Ag
 
1.5
Bi
 
5.5
S
 
9
2.JA.05aPavonite
(Ag,Cu)(Bi,Pb)
 
3
S
 
5
2.JA.05bGrumiplucite
HgBi
 
2
S
 
4
2.JA.05hMozgovaite
PbBi
 
4
(S,Se)
 
7
2.JA.05dCupromakovickyite
Cu
 
8
Pb
 
4
Ag
 
2
Bi
 
18
S
 
36
2.JA.05cKudriavite
(Cd,Pb)Bi
 
2
S
 
4
2.JA.05aIMA2005-036
Ag
 
3
Cu
 
8
Pb
 
4
Bi
 
19
S
 
38
2.JA.05IMA2008-058
Ag
 
5
Bi
 
13
S
 
22
2.JA.10aCuprobismutite
Cu
 
10
Bi
 
12
S
 
23
2.JA.10cHodrušite
Cu
 
8
Bi
 
12
S
 
22
2.JA.10ePadĕraite
Cu
 
5.9
Ag
 
1.3
Pb
 
1.6
Bi
 
11.2
S
 
22
2.JA.10dPizgrischite
Cu
 
17
Bi
 
17
S
 
35
2.JA.10bKupčíkite
(Cu,Fe)
 
4
Bi
 
5
S
 
10
2.JA.15Schapbachite
AgBiS
 
2
2.JA.15Cuboargyrite
AgSbS
 
2
2.JA.20Bohdanowiczite
AgBiSe
 
2
2.JA.20Matildite
AgBiS
 
2
2.JA.20Volynskite
AgBiTe
 
2

Other Names for Mummeite

Synonyms:
IMA1986-025
Other Languages:
German:Mummeit
Spanish:Mummeita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Mummeite

Reference List:Neues Jahrbuch für Mineralogie, Monatshefte (1990): 193-204.

Neues Jahrbuch für Mineralogie, Monatshefte (1992): 12: 555-576.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Mummeite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Mummeite details from Handbook of Mineralogy (PDF)
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    Localities for Mummeite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Slovakia
     
    • Banská Bystrica Region
      • Štiavnica Mts
    		Ďuďa R.,Kotuľak P., Káňa R., 1993: Bergbau und Mineralien von Banská Štiavnica (Schemnitz), Slowakei. Emser Hefte, 14, 3, 1-70, Haltern
    USA
     
    • Colorado
      • San Juan Co.
        • Silverton District
    		Minerals of Colorado (1997) E.B. Eckels
          • Poughkeepsie Gulch
    		Minerals of Colorado (1997) E.B. Eckels
    Dana 7:I:446, 476; Dana 6:114, 1091; Neues Jahrb. Mineral. Mon.:555-576 (1992).
    Mineral and/or Locality
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