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Cuzticite

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Formula:
Fe23+(TeO6) · 3H2O
System:
Hexagonal
Colour:
Deep yellow, also golden ...
Hardness:
3
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.

Classification of Cuzticite

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
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Type Occurrence of Cuzticite

General Appearance of Type Material:
Yellow to brownish yellow scaly coatings.
Year of Discovery:
1982

Physical Properties of Cuzticite

Sub-Vitreous, Greasy, Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Comment:
May be very bright or reflective
Colour:
Deep yellow, also golden brown to brown
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.9 g/cm3 (Measured)    4.01 g/cm3 (Calculated)

Crystallography of Cuzticite

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

Optical Data of Cuzticite

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 Cuzticite

Formula:
Fe23+(TeO6) · 3H2O
Essential elements:
All elements listed in formula:

Relationship of Cuzticite to other Species

4.FM.15FranconiteNa2Nb4O11 · 9H2O
4.FM.15Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O
4.FM.15Ternovite(Mg,Ca)Nb4O11 · nH2O
4.FM.25BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)
4.FM.25Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2O
4.FM.25Manganbelyankinite(Mn,Ca)(Ti,Nb)5O12 · 9H2O
4.FM.30Silhydrite3SiO2 · H2O
28.4.1XocomecatliteCu3(TeO4)(OH)4
28.4.2CarlfriesiteCaTe24+Te6+O8
28.4.3YafsoaniteCa3Zn3(TeO6)2
28.4.4TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O
28.4.5OboyeriteH6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2O
28.4.6SchieffelinitePb8(TeO4)5(SO4)3 · 8H2O
28.4.7GirditeH2Pb3(Te4+O3)(Te6+O6)
28.4.8KhinitePb2+Cu32+[Te6+O6](OH)2
28.4.9Khinite-3TPb2+Cu32+Te6+O6(OH)2
28.4.10DugganitePb3Zn3(AsO4)2(TeO6)
28.4.11KuksitePb3Zn3(PO4)2(TeO6)
28.4.12CheremnykhitePb3Zn3(VO4)2(TeO6)
28.4.13TlapalliteH6(Ca,Pb)2(Cu,Zn)3(TeO3)4(TeO6)(SO4)
28.4.14MontaniteBi2(TeO6) · 2H2O
28.4.15KuranakhitePbMn4+Te6+O6
28.4.17YecoraiteFe33+Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O

Other Names for Cuzticite

Name in Other Languages:
German:Cuzticit
Spanish:Cuzticita

Other Information

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 Cuzticite

Reference List:
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 Cuzticite

Localities for Cuzticite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Mexico (TL)
 
  • Sonora
    • Mun. de Moctezuma
      • Moctezuma
Min.Mag.(1982) 46, 257-259; Panczner(1987):108-336.
Russia
 
  • Far-Eastern region
    • Sakhalinskaya Oblast'
      • Kuril Islands
        • Kunashir Island
P.M. Kartashov data
Mineral and/or Locality  
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