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Cuzticite

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Formula:
Fe3+2(TeO6) · 3H2O
Colour:
Deep yellow, also golden brown to brown
Lustre:
Sub-Vitreous, Greasy, Pearly
Hardness:
3
Specific Gravity:
3.9
Crystal System:
Hexagonal
Name:
Named in 1982 from the Nahuatl language for "something yellow" referring to the yellow to brown color of the original mineral.
This page provides mineralogical data about Cuzticite.


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Classification of CuzticiteHide

Approved
4.FM.35

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
M : Hydroxides with H2O +- (OH); unclassified
Dana 7th ed.:
33.2.3.1
33.2.3.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
28.4.16

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

Physical Properties of CuzticiteHide

Sub-Vitreous, Greasy, Pearly
Transparency:
Transparent, Translucent
Comment:
May be very bright or reflective
Colour:
Deep yellow, also golden brown to brown
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.9 g/cm3 (Measured)    4.01 g/cm3 (Calculated)

Optical Data of CuzticiteHide

Type:
Uniaxial (-)
RI values:
nω = 2.060 nε = 2.050
Birefringence:
0.01
Max Birefringence:
δ = 0.010
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic

Chemical Properties of CuzticiteHide

Formula:
Fe3+2(TeO6) · 3H2O
IMA Formula:
Fe3+2Te6+O6 · 3H2O

Crystallography of CuzticiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 5.045 Å, c = 14.63 Å
Ratio:
a:c = 1 : 2.9
Unit Cell V:
322.48 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Scaly coatings

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.87 (40)
3.26 (100)
2.52 (70)
2.24 (30)
1.99 (20)
1.75 (20)
1.56 (30)
1.46 (30)
Comments:
35-664

Type Occurrence of CuzticiteHide

General Appearance of Type Material:
Yellow to brownish yellow scaly coatings.

Synonyms of CuzticiteHide

Other Language Names for CuzticiteHide

German:Cuzticit
Spanish:Cuzticita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Goldfieldite2 photos of Cuzticite associated with Goldfieldite on mindat.org.
Emmonsite2 photos of Cuzticite associated with Emmonsite on mindat.org.
Eztlite2 photos of Cuzticite associated with Eztlite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.FM.15FranconiteNa(Nb2O5)(OH) · 3H2OMon.
4.FM.15Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2OMon.
4.FM.15Ternovite(Mg,Ca)Nb4O11 · nH2OMon.
4.FM.25BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)Amor.
4.FM.25Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2O
4.FM.25Manganbelyankinite(Mn,Ca)(Ti,Nb)5O12 · 9H2O
4.FM.30Silhydrite3SiO2 · H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.4.1XocomecatliteCu3(TeO4)(OH)4Orth.
28.4.2CarlfriesiteCaTe4+2Te6+O8Mon. 2/m : B2/b
28.4.3YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2OTric.
28.4.6SchieffelinitePb10Te6+6O20(OH)14(SO4)(H2O)5Orth. mmm (2/m 2/m 2/m) : Cmcm
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)Mon. m
28.4.8KhinitePb2+Cu2+3[Te6+O6](OH)2Orth. mm2 : Fdd2
28.4.9Khinite-3TPb2+Cu2+3Te6+O6(OH)2Trig. 3 : P32
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.11KuksitePb3Zn3(PO4)2(TeO6)Trig. 3 2 : P3 2 1
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)Orth.
28.4.13TlapalliteH6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4)
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.15KuranakhitePbMn4+Te6+O6Orth.
28.4.17YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

Fluorescence of CuzticiteHide

Not fluorescent

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.

References for CuzticiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Williams, S. A. (1982): Cuzticite and eztlite, two new tellurium minerals from Moctezuma, Mexico. Mineralogical Magazine, 46, 257-259.
American Mineralogist: 68: 471.

Internet Links for CuzticiteHide

Localities for CuzticiteHide

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 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 (TL)
 
  • Sonora
    • Mun. de Moctezuma
      • Moctezuma
Mineralogical Magazine(1982) 46, 257-259; Panczner(1987):108-336.
Russia
 
  • Far-Eastern region
    • Sakhalinskaya Oblast'
      • Kuril Islands (Kurile Islands)
        • Kunashir Island
P.M. Kartashov data
Mineral and/or Locality  
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