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Moctezumite

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About MoctezumiteHide

Formula:
Pb(UO2)(TeO3)2
Colour:
Bright orange to dark orange
Lustre:
Dull
Hardness:
3
Specific Gravity:
5.73
Crystal System:
Monoclinic
Name:
Named for the type locality, La Moctezuma mine, and the nearest town, Moctezuma, Sonora, Mexico.
Structurally related to Schmitterite.


Classification of MoctezumiteHide

Approved
First Published:
1965
4.JK.65

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
Dana 7th ed.:
34.1.6.1
34.1.5.1

34 : SELENITES, TELLURITES AND SULFITES
1 : A(XO3)
28.3.20

28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites

Physical Properties of MoctezumiteHide

Transparency:
Translucent
Colour:
Bright orange to dark orange
Comment:
Brownish orange in crystals that have been slightly altered
Hardness:
Cleavage:
Perfect
(100)
Density:
5.73 g/cm3 (Measured)    5.41 g/cm3 (Calculated)

Chemical Properties of MoctezumiteHide

Formula:
Pb(UO2)(TeO3)2
IMA Formula:
Pb(UO2)(Te4+O3)2

Crystallography of MoctezumiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.81 Å, b = 7.07 Å, c = 13.83 Å
β = 93.63°
Ratio:
a:b:c = 1.105 : 1 : 1.956
Unit Cell V:
762.11 ų (Calculated from Unit Cell)
Morphology:
Blade like

Type Occurrence of MoctezumiteHide

General Appearance of Type Material:
Minute blades and rosettes in cracks and vugs in oxidized ore zone.
Place of Conservation of Type Material:
Natural History Museum, Paris, France, 175.84.
Harvard University, Cambridge, Massachusetts, 119086.
National Museum of Natural History, Washington, D.C., USA, 128392, 164345, 164346.
Geological Setting of Type Material:
Tellurium-gold deposit
Associated Minerals at Type Locality:

Synonyms of MoctezumiteHide

Other Language Names for MoctezumiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Emmonsite6 photos of Moctezumite associated with Emmonsite on mindat.org.
Schmitterite3 photos of Moctezumite associated with Schmitterite on mindat.org.
Quartz2 photos of Moctezumite associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.JK.05WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.05Walfordite(Fe3+,Te6+)Te4+3O8Iso. m3 (2/m 3) : Ia3
4.JK.10SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
4.JK.10ZincospiroffiteZn2Te4+3O8Mon. 2/m
4.JK.15BalyakiniteCu(TeO3)Orth.
4.JK.20RajiteCu(Te4+2O5)Mon. 2/m : P21/b
4.JK.25CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
4.JK.30Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
4.JK.35ChekhovichiteBi2Te4+4O11Mon. 2/m
4.JK.40SmirniteBi2Te4+O5Orth. mm2
4.JK.45Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
4.JK.50FairbankitePb(TeO3)Tric.
4.JK.55PlumbotelluritePb(TeO3)Orth.
4.JK.60Magnolite(Hg+2)(Te4+O3)Orth. mm2
4.JK.70Schmitterite(UO2)(TeO3)Orth.
4.JK.75Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.3.1BalyakiniteCu(TeO3)Orth.
28.3.2RajiteCu(Te4+2O5)Mon. 2/m : P21/b
28.3.3GraemiteCu[TeO3] · H2OOrth. mmm (2/m 2/m 2/m) : Pmma
28.3.4TeineiteCu2+(Te4+O3) · 2H2OOrth. mmm (2/m 2/m 2/m)
28.3.5CesbroniteCu2+3Te6+O4(OH)4Orth.
28.3.6MroseiteCaTe4+(CO3)O2Orth. mmm (2/m 2/m 2/m) : Pbca
28.3.7QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2yTrig. 3m (3 2/m) : P3m1
28.3.8ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.9KinichiliteMg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.10Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
28.3.11SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
28.3.12WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
28.3.13FairbankitePb(TeO3)Tric.
28.3.14PlumbotelluritePb(TeO3)Orth.
28.3.15Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6Cl
28.3.16SmirniteBi2Te4+O5Orth. mm2
28.3.17ChekhovichiteBi2Te4+4O11Mon. 2/m
28.3.18Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3
28.3.19Schmitterite(UO2)(TeO3)Orth.
28.3.21EmmonsiteFe3+2(TeO3)3 · 2H2OTric. 1 : P1
28.3.22BlakeiteFe3+2[TeO3]3 (?)
28.3.23MackayiteFe3+(Te4+2O5)(OH)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
28.3.24PoughiteFe3+2(TeO3)2(SO4)(H2O)2 · H2OOrth.
28.3.25SonoraiteFe3+(TeO3)(OH) · H2OMon.
28.3.26RodalquilariteFe2(TeO2OH)3(TeO3)ClTric. 1 : P1
28.3.27EztlitePb2+2Fe3+3(Te4+ O3)3(SO4)O2ClMon.
28.3.28KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2OHex.

Other InformationHide

Notes:
Readily soluble in dilute hydrochloric acid and in dilute sodium hydroxide.

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

References for MoctezumiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gaines, R.V. (1965) Moctezumite, a new lead uranyl tellurite. American Mineralogist: 50: 1158-1163.
Brandstätter, F. (1981) Synthesis and crystal structure determination, of Pb2[UO2][TeO3]3. Zeitschrift für Kristallographie: 155: 193-200.
Swihart, G.H., Gupta, P.K.S., Schlemper, E.O., Back, M.E., Gaines, R.V. (1993) The crystal structure of moctezumite [PbUO2](TeO3)2. American Mineralogist: 78: 835-839.
Burns, P.C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for MoctezumiteHide

Localities for MoctezumiteHide

ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Mexico
 
  • Sonora
    • Mun. de Moctezuma
Gaines, R.V. (1965) Moctezumite, a new lead uranyl tellurite. American Mineralogist: 50: 1158-1163.
USA
 
  • California
    • San Bernardino Co.
      • Silver Lake District
        • Soda Mts
          • Baker
            • Otto Mountain
Robert M. Housley (2005) Recent rare mineral finds in southern California and Nevada desert mines. Abstracts from the 2005 Desert Symposium. California State University, Desert Studies Consortium and LSA Associates, Inc.
Mineral and/or Locality  
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