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Mummeite

A valid IMA mineral species
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03721980014948754718695.jpg
Mummeite

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
03195720016088494791135.jpg
Mummeite, etc.

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
03721980014948754718695.jpg
Mummeite

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
03195720016088494791135.jpg
Mummeite, etc.

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
03721980014948754718695.jpg
Mummeite

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
03195720016088494791135.jpg
Mummeite, etc.

Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
Hide all sections | Show all sections

About MummeiteHide

Formula:
Cu0.58Ag3.11Pb1.10Bi6.65S13
Also given as (Cu,Ag)3-4(Bi,Pb)7-8S13
Colour:
Gray
Lustre:
Metallic
Hardness:
4
Specific Gravity:
6.795 (Calculated)
Crystal System:
Monoclinic
Name:
Named for the mineralogist and crystallographer William Gustav (Gus) Mumme (CSIRO, Melbourne, Australia) who first studied the mineral and who worked on sulfosalts.
This page provides mineralogical data about Mummeite.


Unique IdentifiersHide

Mindat ID:
2807
Long-form identifier:
mindat:1:1:2807:9
GUID
(UUID V4):
35cb3078-9f36-4039-8fdf-af0fe16b5f48

IMA Classification of MummeiteHide

Classification of MummeiteHide

Strunz-mindat (2023):
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 ed.:
3.8.10.4

3 : SULFOSALTS
8 : 1 < ø < 2

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
MumIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MummeiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Gray
Hardness:
4 on Mohs scale
Density:
6.795(5) g/cm3 (Calculated)

Optical Data of MummeiteHide

Anisotropism:
Pronounced, gray to brownish yellow to dark indigo
Bireflectance:
Perceptible
Reflectivity:
WavelengthR1R2
470nm43.3%47.5%
546nm42.8%47.0%
589nm42.5%46.4%
650nm42.2%45.7%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 47.5%.
R1 shown in black, R2 shown in red

Chemistry of MummeiteHide

Mindat Formula:
Cu0.58Ag3.11Pb1.10Bi6.65S13

Also given as (Cu,Ag)3-4(Bi,Pb)7-8S13
Elements listed:
Ag, Bi, Cu, Pb, S - search for minerals with similar chemistry

Crystallography of MummeiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 13.47(1) Å, b = 4.06(1) Å, c = 21.63(1) Å
β = 92.9(1)°
Ratio:
a:b:c = 3.318 : 1 : 5.328
Unit Cell V:
1,181.39 ų (Calculated from Unit Cell)
Morphology:
Massive, granular, lath-like.
Twinning:
Along a composition plane parallel to elongation.
Comment:
Suggested space groups: C2/m or Cm (Karup-Møller & Makovicky, 1992). "Cuproplumbian mummeite" has a = 13.48(1), b = 4.06(1), c = 21.72(1) A, β = 93.9(1)° (Karup-Møller & Makovicky, 1992). A sample from the Mike mine has: a = 13.41, b = 4.05, c = 21.51 Å, β = 94.5° (Mumme, 1990). Synthetic Ag3.5Bi7.5S13 has space group C2/m, a = 13.3237(2), b = 4.0455(4), c = 21.484(3) Å, β = 92.90 (1)° (Poudeu Poudeu and Ruck, 2005).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.863 Å(100)
2.023 Å(100)
3.53 Å(50)
3.43 Å(50)
1.652 Å(40)
1.285 Å(40)
5.55 Å(30)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of MummeiteHide

Type Locality:
ⓘ Acapulco adit, Alaska Mine, Poughkeepsie Gulch, San Juan County, Colorado, USA
General Appearance of Type Material:
Intergrowths of short columnar crystals to 1 mm.
Place of Conservation of Type Material:
University of Copenhagen, Copenhagen, Denmark.
Museum of Natural History, Denver, Colorado, USA.
Associated Minerals at Type Locality:
QuartzChalcopyriteSphaleritePyriteOurayite
Heyrovskýite
Reference:
Karup-Møller, S., Makovicky, E. (1992) Mummeite - A new member of the pavonite homologous series from Alaska mine, Colorado. Neues Jahrbuch für Mineralogie, Monatshefte: 1992: 555-576.

Synonyms of MummeiteHide

Other Language Names for MummeiteHide

German:Mummeit
Simplified Chinese:块硫铋铅银矿
Spanish:Mummeita

Relationship of Mummeite to other SpeciesHide

Member of:
Pavonite Homologous Series Group
Other Members of this group:
BenjaminiteAg3Bi7S12Mon. 2/m : B2/m
CupromakopavoniteAg3Cu8Pb4Bi19S38Mon. 2/m : B2/m
CupromakovickyiteCu4AgPb2Bi9S18Mon. 2/m : B2/m
CupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
DantopaiteAg5Bi13S22Mon. 2/m : B2/m
LuboržákiteMn2AsSbS5Mon. 2/m : B2/m
MakovickyiteCu1.12Ag0.81Pb0.27Bi5.35S9Mon. 2/m
PavoniteAgBi3S5Mon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Mummeite associated with ChalcopyriteCuFeS2
1 photo of Mummeite associated with AikinitePbCuBiS3

Related Minerals - Strunz-mindat GroupingHide

2.JA.FerdowsiiteAg8(Sb5As3)S16Mon. 2/m : P21/b
2.JA.SangenaroiteAg8(Sb8-xAsx)SΣ16 Mon. 2/m
2.JA.LuboržákiteMn2AsSbS5Mon. 2/m : B2/m
2.JA.05eBenjaminiteAg3Bi7S12Mon. 2/m : B2/m
2.JA.05gBorodaeviteAg5(Bi,Pb,Fe)8(Sb,Bi)2S17Mon.
2.JA.05aCupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
2.JA.05iLivingstoniteHgSb4S6(S2)Mon. 2/m : B2/b
2.JA.05dMakovickyiteCu1.12Ag0.81Pb0.27Bi5.35S9Mon. 2/m
2.JA.05aPavoniteAgBi3S5Mon. 2/m : B2/m
2.JA.05bGrumipluciteHgBi2S4Mon. 2/m : B2/m
2.JA.05hMozgovaitePbBi4S7Orth. mmm (2/m 2/m 2/m)
2.JA.05dCupromakovickyiteCu4AgPb2Bi9S18Mon. 2/m : B2/m
2.JA.05cKudriavite(Cd,Pb)Bi2S4Mon. 2/m : B2/m
2.JA.05aCupromakopavoniteAg3Cu8Pb4Bi19S38Mon. 2/m : B2/m
2.JA.05DantopaiteAg5Bi13S22Mon. 2/m : B2/m
2.JA.10aCuprobismutiteCu8AgBi13S24Mon. 2/m : B2/m
2.JA.10cHodrušiteCu8Bi12S22Mon. 2/m
2.JA.10ePadĕraiteCu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22Mon. 2/m : P21/m
2.JA.10dPizgrischite(Cu,Fe)Cu14PbBi17S35Mon. 2/m : B2/m
2.JA.10bKupčíkiteCu3.4Fe0.6Bi5S10Mon. 2/m : B2/m
2.JA.15SchapbachiteAg0.4Pb0.2Bi0.4SIso. m3m (4/m 3 2/m) : Fm3m
2.JA.15CuboargyriteAgSbS2Iso. m3m (4/m 3 2/m)
2.JA.20BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1
2.JA.20MatilditeAgBiS2Trig. 3 2 : P31 2 1
2.JA.20VolynskiteAgBiTe2Trig. 3m (3 2/m) : P3m1

Other InformationHide

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

Internet Links for MummeiteHide

References for MummeiteHide

Reference List:
Mumme, W.G. (1990): A note on the occurrence, composition and crystal structures of pavonite homologous series members 4P, 6P, and 8P. Neues Jahrbuch für Mineralogie, Monatshefte 1990, 193-204. (as unnamed 8P member) [Abs. in American Mineralogist 76 (1991) 665-671]
Karup-Møller, S., Makovicky, E. (1992): Mummeite - A new member of the pavonite homologous series from Alaska mine, Colorado. Neues Jahrbuch für Mineralogie, Monatshefte 1992, 555-576. [Abs. in American Mineralogist, 78 (1993), 845-849]
Karup-Møller, S., Makovicky, E. (1992) Mummeite - A new member of the pavonite homologous series from Alaska mine, Colorado. Neues Jahrbuch für Mineralogie, Monatshefte: 1992: 555-576.
Mandarino, Joseph A. (1997) New Minerals 1990-1994. The Mineralogical Record Inc., Tuscon, Arizona. 220pp.
Poudeu Poudeu, P.F. and Ruck, M. (2005): Ag3.5Bi7.5S13, a new member (N = 8) of the homologous series [Bi2S3]2·[AgBiS2](N−1)/2. Acta Crystallographica C61, i41-i43. [synthetic, Cu-free sample]

Localities for MummeiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Mato Grosso
    • Nova Santa Helena
Silva, M. L. T. D. (2017). Geologia, petrologia e metalogenia do depósito de ouro Santa Helena, Mato Grosso. Thesis Universidade de Brasília
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion Mining District
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.
Voudouris, P. & Economou-Eliopoulus, M. (2003): Mineralogy and chemistry of Cu-rich ores from the Kamariza carbonate-hosted deposit (Lavrion), Greece. In: Eliopoulos et al. (Eds.): Mineral Exploration and Sustainable Development. Millpress, Rotterdam, 1039-1042.
VOUDOURIS, P. (2005): Gold and silver mineralogy of the Lavrion deposit Attika/Greece. In: Mao, J.W. and Bierlein, F.P. (Eds.): Mineral deposit research: Meeting the global challenge. Springer, Berlin, 1089-1092.
Norway
 
  • Vestfold og Telemark
    • Tokke
      • Skafså
Larsen, Alf Olav, Topa, Dan (2018) Bi-sulfosalts from Tokke, Telemark, Norway. Norsk Mineralsymposium 2018, Norsk Mineralsymposium. 71-78
Larsen, Alf Olav, Topa, Dan (2018) Bi-sulfosalts from Tokke, Telemark, Norway. Norsk Mineralsymposium 2018, Norsk Mineralsymposium. 71-78
Russia
 
  • Chelyabinsk Oblast
    • Kaslinsky District
Rogov, D.A., Belogub, E.V., Novoselov, K.A., Rassomakhin, M.A., Irmakov, R.R., Chugaev, A.E. (2023): Bismuth minerals from Yugo-Konevo and Porokhovskoe tungsten deposits (South Urals). Mineralogy, 9, 26-49.
Rogov, D.A., Belogub, E.V., Novoselov, K.A., Rassomakhin, M.A., Irmakov, R.R., Chugaev, A.E. (2023): Bismuth minerals from Yugo-Konevo and Porokhovskoe tungsten deposits (South Urals). Mineralogy, 9, 26-49.
  • Primorsky Krai
    • Dalnegorsk Urban District
      • Dalnegorsk
Simanenko, L. F. (2007). Modes of trace element occurrence in galena from the Partizansky base metal-skarn deposit, Primorye. Russian Journal of Pacific Geology, 1(2), 144-152.
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
    • Žarnovica District
      • Hodruša-Hámre
        • Hodruša-Hámre mines
Jeleň, S., Pršek, J., Kovalenker, V. A., Topa, D., Sejkora, J., Števko, M., & Ozdín, D. (2012). Bismuth Sulfosalts Of The Cuprobismutite, Pavonite And Aikinite Series From The Rozália Mine, Hodruša–Hámre, Slovakia. The Canadian Mineralogist, 50(2), 325-340.
  • Žilina Region
    • Liptovský Mikuláš District
In the collection of Brent Thorne. Dealer label by Sonke Stolze.
Ukraine
 
  • Zakarpattia Oblast
    • Berehove Raion
      • Berehove
Biruk, S., & Skakun, L. (2012). Bismuth minerals of the Beregovo ore field: mineral assemblages and spatial zonation (Transcarpathian, Ukraine). Geological Quarterly, 44(1), 39-46.
USA
 
  • Colorado
    • San Juan County
Mumme, W.G. (1990): A note on the occurrence, composition and crystal structures of pavonite homologous series members 4P, 6P, and 8P. Neues Jahrbuch für Mineralogie, Monatshefte 1990, 193-204. (as unnamed 8P member
see abs. in American Mineralogist 76 (1991) 665-671
see also American Mineralogist, 78 (1993), 845-849)
Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
      • Poughkeepsie Gulch
Dana 7:I:446, 476
Dana 6:114, 1091
Neues Jahrb. Mineral. Mon.:555-576 (1992).
Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
Quick NavTopAbout MummeiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
 
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