Cuzticite Mineral Data

Cuzticite Mineral Data

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General Cuzticite Information

Chemical Formula:

Fe+++2Te++++++O6·3(H2O)

Composition:

Molecular Weight = 389.34 gm

Iron 28.69 % Fe 41.02 % Fe₂O₃

Tellurium 32.77 % Te 40.99 % TeO₂

Hydrogen 1.55 % H 13.88 % H₂O

Oxygen 36.98 % O

______ ______

100.00 % 95.89 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₂TeO₆·3(H₂O)

IMA Status:

Approved IMA 1982

Locality:

Moctezuma mine, Moctezuma, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named from the Nahuatl for "something yellow", in allusion to its color.

Cuzticite Image

Images:

Cuzticite

Comments: Thin scaly yellow-brown crust of cuzticite on quartz.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cuzticite Crystallography

Axial Ratios:

a:c = 1:2.8999

Cell Dimensions:

a = 5.045, c = 14.63, Z = 2; V = 322.48 Den(Calc)= 4.01

Crystal System:

HexagonalSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.256(1), 2.518(0.7), 4.871(0.4),

Physical Properties of Cuzticite

Cleavage:

[???] Good

Color:

Brown, Brownish yellow, Yellow.

Density:

3.9

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Scaly - Morphology like fish scales.

Habit:

Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).

Hardness:

3 - Calcite

Luster:

Adamantine

Optical Properties of Cuzticite

Dichroism (e):

none.

Dichroism (w):

none.

Gladstone-Dale:

CI meas= -0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2631,KPDmeas= 0.2705,KC= 0.2588

Optical Data:

Uniaxial (-), e=2.05, w=2.06, bire=0.0100.

Calculated Properties of Cuzticite

Electron Density:

r_electron=3.75 gm/cc
note: r_Cuzticite=4.01 gm/cc.

Fermion Index

Fermion Index = 0.03244
Boson Index = 0.96756

Photoelectric:

PE_Cuzticite= 116.56 barns/electron
U=PE_Cuzticite x r_electron= 437.00 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cuzticite is Not Radioactive

Cuzticite Classification

Dana Class:

33.2.3.1 (33)Selenates and Tellurates

(33.2)as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0

(33.2.3)Dana Group

33.2.3.1 Cuzticite Fe2TeO6·3(H2O) Unk Hex

Strunz Class:

IV/K.15-20 IV - Oxides

IV/K - Complex Tellurides with [TeO6]6-, [TeO3]2- and [TeO4]2- groups

IV/K.15 - Yafsoanite - Cuzticite series

IV/K.15-10 Frankhawthorneite Cu2TeO4(OH)2 P 2₁/n 2/m

IV/K.15-12 Xocomecatlite Cu3TeO4(OH)4 Unk Ortho

IV/K.15-15 Mcalpineite Cu3TeO6·(H2O) Unk Cubic

IV/K.15-16 Jensenite Cu3TeO6·2(H2O) P 2₁/n 2/m

IV/K.15-18 Leisingite! Cu(Mg,Cu,Fe,Zn)2TeO6·6(H2O) P 31m 3 2/m

IV/K.15-19 Utahite! Cu5Zn3(TeO4)4(OH)8·7(H2O) P1 or P1 Tri

IV/K.15-20 Cuzticite Fe2TeO6·3(H2O) Unk Hex

IV/K.15-30 Yafsoanite Ca3Te2Zn3O12 I a3d 4/m 3 2/m

IV/K.15-40 Khinite PbCu3TeO6(OH)2 F ddd 2/m 2/m 2/m

IV/K.15-50 Parakhinite Cu3PbTeO4(OH)6 P 6₂22 or P 6₄22 6 2 2

IV/K.15-60 Montanite Bi2TeO6·2(H2O) Mono

Other Cuzticite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Cuzticite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Cuzticite

Fe+++2Te++++++O6·3(H2O)
Dana No: 33.2.3.1 Strunz No: IV/K.15-20
Locality:

Notes: