Cuzticite
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About Cuzticite
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.
Classification of Cuzticite
Approved
4/K.15-20
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
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
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
28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
Physical Properties of Cuzticite
Sub-Vitreous, Greasy, Pearly
Transparency:
Transparent, Translucent
Comment:
May be very bright or reflective
Colour:
Deep yellow, also golden brown to brown
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.9 g/cm3 (Measured) 4.01 g/cm3 (Calculated)
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.
and does not take into account mineral colouration.
Surface Relief:
Very High
Optical Extinction:
Parallel
Pleochroism:
Non-pleochroic
Chemical Properties of Cuzticite
Formula:
Fe3+2(TeO6) · 3H2O
IMA Formula:
Fe3+2Te6+O6 · 3H2O
Elements listed:
Crystallography of Cuzticite
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.87 Å | (40) |
| 3.26 Å | (100) |
| 2.52 Å | (70) |
| 2.24 Å | (30) |
| 1.99 Å | (20) |
| 1.75 Å | (20) |
| 1.56 Å | (30) |
| 1.46 Å | (30) |
Comments:
35-664
Type Occurrence of Cuzticite
General Appearance of Type Material:
Yellow to brownish yellow scaly coatings.
Synonyms of Cuzticite
Other Language Names for Cuzticite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
| 4.FM.15 | Franconite | Na(Nb2O5)(OH) · 3H2O | Mon. |
| 4.FM.15 | Hochelagaite | (Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2O | Mon. |
| 4.FM.15 | Ternovite | (Mg,Ca)Nb4O11 · nH2O | Mon. |
| 4.FM.25 | Belyankinite | Ca1-2(Ti,Nb)5O12 · 9H2O (?) | Amor. |
| 4.FM.25 | Gerasimovskite | (Mn,Ca)(Nb,Ti)5O12 · 9H2O | |
| 4.FM.25 | Manganbelyankinite | (Mn,Ca)(Ti,Nb)5O12 · 9H2O | |
| 4.FM.30 | Silhydrite | 3SiO2 · H2O | Orth. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 28.4.1 | Xocomecatlite | Cu3(TeO4)(OH)4 | Orth. |
| 28.4.2 | Carlfriesite | CaTe4+2Te6+O8 | Mon. 2/m : B2/b |
| 28.4.3 | Yafsoanite | Ca3Zn3(TeO6)2 | Iso. m3 (2/m 3) |
| 28.4.4 | Tlalocite | Cu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2O | Orth. |
| 28.4.5 | Oboyerite | H6(Pb,Ca)6(Te4+O3)3(Te6+O6)2 · 2H2O | Tric. |
| 28.4.6 | Schieffelinite | Pb10Te6+6O20(OH)14(SO4)(H2O)5 | Orth. mmm (2/m 2/m 2/m) : Cmcm |
| 28.4.7 | Girdite | H2Pb3(Te4+O3)(Te6+O6) | Mon. m |
| 28.4.8 | Khinite | Pb2+Cu2+3[Te6+O6](OH)2 | Orth. mm2 : Fdd2 |
| 28.4.9 | Khinite-3T | Pb2+Cu2+3Te6+O6(OH)2 | Trig. 3 : P32 |
| 28.4.10 | Dugganite | Pb3Zn3(AsO4)2(TeO6) | Trig. 3 2 : P3 2 1 |
| 28.4.11 | Kuksite | Pb3Zn3(PO4)2(TeO6) | Trig. 3 2 : P3 2 1 |
| 28.4.12 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) | Orth. |
| 28.4.13 | Tlapallite | (Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2O | Trig. 3 2 : P3 2 1 |
| 28.4.14 | Montanite | Bi2(TeO6) · 2H2O | |
| 28.4.15 | Kuranakhite | PbMn4+Te6+O6 | Orth. |
| 28.4.17 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
Fluorescence of Cuzticite
Not fluorescent
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:
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 Cuzticite
mindat.org URL:
https://www.mindat.org/min-1199.html
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Localities for Cuzticite
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The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Mexico (TL) | |
| Mineralogical Magazine(1982) 46, 257-259; Panczner(1987):108-336. |
Russia | |
| P.M. Kartashov data |
Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico