Cualstibite Mineral Data

General Cualstibite Information

Chemical Formula:

Cu++6Al3Sb3(OH)36

Composition:

Molecular Weight = 1,439.73 gm

Aluminum 5.62 % Al 10.62 % Al₂O₃

Copper 26.48 % Cu 33.15 % CuO

Antimony 25.37 % Sb 33.70 % Sb₂O₅

Hydrogen 2.52 % H 22.52 % H₂O

Oxygen 40.01 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₆Al₃Sb₃(OH)₃₆

IMA Status:

Approved IMA 1983

Locality:

Clara mine, Black Forest, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for the composition (Cu, Al, Stibium - Latin for antimony).

Cualstibite Crystallography

Axial Ratios:

a:c = 1:1.0576

Cell Dimensions:

a = 9.2, c = 9.73, Z = 1; V = 713.21 Den(Calc)= 3.35

Crystal System:

Trigonal - Rhombohedral H-M Symbol ( 3) Space Group: P 3

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

By Intensity(I/I_o): 4.89(1), 2.33(0.9), 4.17(0.8),

Physical Properties of Cualstibite

Cleavage:

None

Color:

Blue green.

Density:

3.18

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

pale blue

Optical Properties of Cualstibite

Dichroism (e):

colorless.

Dichroism (w):

pale blue green.

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1964,KPDmeas= 0.2069,KC= 0.2065
Ncalc = 1.66 - 1.69

Optical Data:

Uniaxial (-), e=1.644, w=1.672, bire=0.0280.

Calculated Properties of Cualstibite

Electron Density:

Bulk Density (Electron Density)=3.05 gm/cc
note: Specific Gravity of Cualstibite =3.18 gm/cc.

Fermion Index:

Fermion Index = 0.0001958086
Boson Index = 0.9998041914

Photoelectric:

PE_Cualstibite= 89.74 barns/electron
U=PE_Cualstibite x rElectron Density= 273.52 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cualstibite is Not Radioactive

Cualstibite Classification

Dana Class:

44.03.10.01 (44)Antimonates

(44.03)with miscellaneous formulae

(44.03.10)Cualstibite Group

44.03.10.01 Cualstibite Cu6Al3Sb3(OH)36 P 3 3

44.03.10.02 Zincalstibite! Zn2AlSb(OH)12 P 3 3

Strunz Class:

04.FB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.F - Hydroxides (without V or U)

04.FB -Hydroxides with OH, without H2O; insular octahedra

04.FB.10 Cualstibite Cu6Al3Sb3(OH)36 P 3 3

04.FB.10 Zincalstibite! Zn2AlSb(OH)12 P 3 3

Other Cualstibite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 92:198) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Cualstibite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Cualstibite

Cu++6Al3Sb3(OH)36
Dana No: 44.03.10.01 Strunz No: 04.FB.10
Locality:

Notes:

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