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Mummeite

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




Formula:
(Cu,Ag)
 
3-4
(Bi,Pb)
 
7-8
S
 
13
System:MonoclinicHardness:4
Name:Named for the mineralogist and crystallographer W. Gus Mumme (CSIRO, Melbourne, Australia) who first studied the mineral and who worked on sulfosalts.
This page provides mineralogical data about Mummeite.

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:
(Cu,Ag)
 
3-4
(Bi,Pb)
 
7-8
S
 
13
Essential elements:Bi, Cu, 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.05aCupromakopavonite
Ag
 
3
Cu
 
8
Pb
 
4
Bi
 
19
S
 
38
2.JA.05Dantopaite
Cu
 
1.06
Ag
 
4.24
Pb
 
0.9
Bi
 
12.23
S
 
21.89
Te
 
0.11
2.JA.10aCuprobismutite
Cu
 
8
AgBi
 
12
S
 
24
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
  • Mummeite details from Handbook of Mineralogy (PDF)
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    • Localities for Mummeite

    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.
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    (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.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
    		Voudouris, P., Melfos, V, Spry, P.G., Bonsall, T.A., Tarkian, M. & Solomon, Ch. (2008): Carbonate-replacement Pb-Zn-Ag+/-Au mineralization in the Kamariza area, Lavrion, Greece: Mineralogy and thermochemical conditions of formation. Mineralogy & Petrology 94, 85-106.
    Slovakia
     
    • Banská Bystrica Region
    		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).
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