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Molybdomenite

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El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia
© Brent Thorne

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Formula:
PbSeO
 
3
System:MonoclinicColour:White
Hardness:3½
Name:From the Greek μόλυβδος for "lead" and μήυη for "moon."
This page provides mineralogical data about Molybdomenite.

Classification of Molybdomenite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/K.01-20
Nickel-Strunz 10th (pending) edition ID:4.JF.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
F : Selenites without additional anions, without H2O
Dana 7th edition ID:34.1.1.1
Dana 8th edition ID:34.1.1.1

34 : SELENITES, TELLURITES AND SULFITES
1 : A(XO3)
Hey's CIM Ref.:28.1.5

28 : Selenites, Selenates, Tellurites, and Tellurates
1 : Selenites
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Type Occurrence of Molybdomenite

Type Locality:Cacheuta Mine, Cerro de Cacheuta, Sierra de Cacheuta, Mendoza, Argentina
Year of Discovery:1882
Associated Minerals at type locality:
Chalcomenite

Physical Properties of Molybdomenite

Lustre:Pearly
Colour:White
Hardness (Mohs):3½

Crystallography of Molybdomenite

Crystal System:Monoclinic
Cell Parameters:a = 6.86Å, b = 5.48Å, c = 4.5Å
β = 112.75°
Ratio:a:b:c = 1.252 : 1 : 0.821
Unit Cell Volume:V 156.01 ų (Calculated from Unit Cell)

Optical Data of Molybdomenite

Type:Biaxial (-)
RI values: nα = 2.120 nγ = 2.140
2V:Measured: 80°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r < v

Chemical Properties of Molybdomenite

Formula:
PbSeO
 
3
Essential elements:O, Pb, Se
All elements listed in formula:O, Pb, Se

Relationship of Molybdomenite to other Species

Related Minerals - Hey's Index Grouping:

- +
28.1.1Chalcomenite
CuSeO
 
3
 · 2H
 
2
O
28.1.2Clinochalcomenite
CuSeO
 
3
 · 2H
 
2
O
28.1.3Francisite
Cu
 
3
Bi(SeO
 
3
)
 
2
O
 
2
Cl
28.1.4Sofiite
Zn
 
2
(SeO
 
3
)Cl
 
2
28.1.6Haynesite
(UO
 
2
)
 
3
(OH)
 
2
(SeO
 
3
)
 
2
 · 5H
 
2
O
28.1.7Derriksite
Cu
 
4
(UO
 
2
)(SeO
 
3
)
 
2
(OH)
 
6
 · H
 
2
O
28.1.8Marthozite
Cu(UO
 
2
)
 
3
(SeO
 
3
)
 
2
(OH)
 
2
 · 7H
 
2
O
28.1.9Guilleminite
Ba(UO
 
2
)
 
3
(SeO
 
3
)
 
2
(OH)
 
4
 · 3H
 
2
O
28.1.10Demesmaekerite
Pb
 
2
Cu
 
5
(UO
 
2
)
 
2
(SeO
 
3
)
 
6
(OH)
 
6
 · 2H
 
2
O
28.1.11Mandarinoite
Fe
3+
2
(SeO
 
3
)
 
3
 · 4H
 
2
O
28.1.12Cobaltomenite
CoSeO
 
3
 · 2H
 
2
O
28.1.13Ahlfeldite
(Ni,Co)SeO
 
3
 · 2H
 
2
O
Related Minerals - Dana Grouping):

- +
34.1.1.2Scotlandite
PbSO
 
3

Other Names for Molybdomenite

Other Languages:
French:Selenite de plomb
German:Bleiselenit
Glasbachit
Molybdomenit
Selenbleispath
Selenichtsaures Bleioxyd
Russian:Молибдоменит
Spanish:Molybdomenita

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 Molybdomenite

Reference List:

- +
Kersten, C. (1839): Über mehrere neue Vorkommnisse des Selens. Annalen der Physik und Chemie, 46, 265-280. (as Selenichtsaures Bleioxyd).

Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York. (aided by G.J. Brush): 669.

Adam, M. (1869) Tableau minéralogique, Paris: 52 (as Glasbachit).

Bertrand (1882) Bulletin de la Société française de Minéralogie: 5: 90 (as Kerstenite).

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 640.

European Journal of Mineralogy (1994): 6: 337.

American Mineralogist (1965): 50: 812.

Canadian Mineralogist (1970): 8: 149-158.

Tschermaks Mineralogische und Petrographische Mitteilungen (1972): 17: 196-207.

Internet Links for Molybdomenite

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

    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.
    Hide Locality List
    (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.
    Argentina
     
    • La Rioja
    		Recursos Minerales de la Republica Argentina, E. O. Zappettini Ed., Buenos Aires 1999 ISSN 0328-2325
    Sarp, H. & G.Burri, Schweiz. Mineral.Petrogr. Mitt. 67, 219-223(1987)
    • Mendoza
      • Sierra de Cacheuta
        • Cerro de Cacheuta
    		Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 640; Bertrand (1882) Bull. Soc. fr. Min. 5, 90-92.
    Bolivia
     
    • Potosí Department
      • Antonio Quijarro Province
    		[MinRec 21:133]
      • Chayanta Province
        • Pakajake Canyon (Pacajake Canyon)
    		[MinRec 32:476]
    Canada
     
    • Ontario
      • Algoma District
        • Montreal River harbor
    		J. A. Mandarino (1965): Molybdomenite from the Ranwick uranium mine, Montreal River area, Ontario. Can. Mineral. 8, 149-158.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Javorník (Jauernig)
    		Sejkora, J., Pauliš, P., Malec, J.: Supergenní selenová mineralizace na uranovém ložisku Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2004, roč. 12, s. 174-179.
    Germany
     
    • Lower Saxony
      • Harz
        • Lautenthal
    		Wittern: "Mineralfundorte in Deutschland", 2001
    • Thuringia
      • Thuringian Forest
        • Neustadt am Rennsteig
          • Tannenglasbachsgrund
    		Kersten, C. (1839): Über mehrere neue Vorkommnisse des Selens. Annalen der Physik und Chemie, 46, 265-280.
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    		Lapis 2001(1), 11-40
    M. Kampf collection
    UK
     
    • England
      • Devon
        • East Devon
          • Budleigh Salterton
    		Technical Report TR-02-09 (March 2002) Alteration of uraniferous and native copper concretions in the Permian mudrocks of south Devon, United Kingdom - A E Milodowski et al
    USA
     
    • Colorado
      • Moffat Co.
        • Skull Creek District (Blue Mountain District)
    		Minerals of Colorado (1997) Eckels, E. B.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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