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Cuzticite

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Formula:
Fe
3+
2
(TeO
 
6
) · 3H
 
2
O
System:HexagonalColour: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

IMA status:Approved
Strunz 8th edition ID:4/K.15-20
Nickel-Strunz 10th (pending) edition ID: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 edition ID:33.2.3.1
Dana 8th edition ID:33.2.3.1

33 : SELENATES AND TELLURATES
2 : (AB)m(XO6)·xH2O, where x can equal zero
Hey's CIM Ref.:28.4.16

28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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Type Occurrence of Cuzticite

Type Locality:Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
General Appearance of Type Material:Yellow to brownish yellow scaly coatings.
Year of Discovery:1982

Physical Properties of Cuzticite

Lustre: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 (measured):3.9 g/cm3
Density (calculated):4.01 g/cm3

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:
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
Maximum Birefringence:δ = 0.010

Chart 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:
Fe
3+
2
(TeO
 
6
) · 3H
 
2
O
Simplified for copy/paste:Fe3+2(TeO6)·3H2O
Essential elements:Fe, H, O, Te
All elements listed in formula:Fe, H, O, Te

Relationship of Cuzticite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.FM.15Franconite
Na
 
2
Nb
 
4
O
 
11
· 9H
 
2
O
4.FM.15Hochelagaite
(Ca,Na,Sr)(Nb,Ti,Si,Al)
 
4
O
 
11
· 8H
 
2
O
4.FM.15Ternovite
(Mg,Ca)Nb
 
4
O
 
11
· nH
 
2
O
4.FM.25Belyankinite
Ca
 
1-2
(Ti,Nb)
 
5
O
 
12
· 9H
 
2
O (?)
4.FM.25Gerasimovskite
(Mn,Ca)(Nb,Ti)
 
5
O
 
12
· 9H
 
2
O
4.FM.25Manganbelyankinite
(Mn,Ca)(Ti,Nb)
 
5
O
 
12
· 9H
 
2
O
4.FM.30Silhydrite
3SiO
 
2
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
28.4.1Xocomecatlite
Cu
 
3
(TeO
 
4
)(OH)
 
4
28.4.2Carlfriesite
CaTe
4+
2
Te
6+
 
O
 
8
28.4.3Yafsoanite
Ca
 
3
Zn
 
3
(TeO
 
6
)
 
2
28.4.4Tlalocite
Cu
 
10
Zn
 
6
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)(OH)
 
25
Cl · 27H
 
2
O
28.4.5Oboyerite
H
 
6
(Pb,Ca)
 
6
(Te
4+
 
O
 
3
)
 
3
(Te
6+
 
O
 
6
)
 
2
· 2H
 
2
O
28.4.6Schieffelinite
Pb
 
8
(TeO
 
4
)
 
5
(SO
 
4
)
 
3
· 8H
 
2
O
28.4.7Girdite
H
 
2
Pb
 
3
(Te
4+
 
O
 
3
)(Te
6+
 
O
 
6
)
28.4.8Khinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.9Parakhinite
Pb
2+
 
Cu
2+
3
Te
6+
 
O
 
6
(OH)
 
2
28.4.10Dugganite
Pb
 
3
Zn
 
3
(AsO
 
4
)
 
2
(TeO
 
6
)
28.4.11Kuksite
Pb
 
3
Zn
 
3
(PO
 
4
)
 
2
(TeO
 
6
)
28.4.12Cheremnykhite
Pb
 
3
Zn
 
3
(VO
 
4
)
 
2
(TeO
 
6
)
28.4.13Tlapallite
H
 
6
(Ca,Pb)
 
2
(Cu,Zn)
 
3
(TeO
 
3
)
 
4
(TeO
 
6
)(SO
 
4
)
28.4.14Montanite
Bi
 
2
(TeO
 
6
) · 2H
 
2
O
28.4.15Kuranakhite
PbMn
4+
 
Te
6+
 
O
 
6
28.4.17Yecoraite
Fe
3+
3
Bi
 
5
(Te
6+
 
O
 
4
)
 
2
(Te
4+
 
O
 
3
)O
 
9
· 9H
 
2
O

Other Names for Cuzticite

Synonyms:
IMA1980-071
Other Languages:
German:Cuzticit
Spanish:Cuzticita

Other Information

Fluorescence in UV light:Not fluorescent
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 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

Search Engines:
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  • External Links:
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  • Look for Cuzticite on Athena Mineralogy
  • Look for Cuzticite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Cuzticite details from Handbook of Mineralogy (PDF)
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  • Localities for Cuzticite

    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.
    (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.
    Mexico
     
    • 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
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