Zincalstibite Mineral Data

General Zincalstibite Information

Chemical Formula:

Zn2AlSb(OH)12

Composition:

Molecular Weight = 483.60 gm

Aluminum 5.58 % Al 10.54 % Al₂O₃

Zinc 27.04 % Zn 33.66 % ZnO

Antimony 25.18 % Sb 33.45 % Sb₂O₅

Hydrogen 2.50 % H 22.35 % H₂O

Oxygen 39.70 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₂AlSb(OH)₁₂

Environment:

Found within the cavities of marble that was part of an epizonal metamorphic complex originating from a tertiary Tuscan sedimentary sequence. Zn analogue of cualstibite.

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Apuan Alps, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for the composition (ZINk, Aluminium, Stibium).

Synonym:

IMA1998-033

Zincalstibite Image

Images:

Zincalstibite

Comments: SEM image of two trianglular prizms of zincalstibite among small sticks of amorphous material.
Location: Apuan Alps, Tuscany, Italy. Scale: See Image.
© American Mineralogist

Zincalstibite Crystallography

Axial Ratios:

a:c = 1:1.83912

Cell Dimensions:

a = 5.321, c = 9.786, Z = 2; V = 239.95 Den(Calc)= 6.69

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): 1.887(1), 4.897(1), 2.342(0.88),4.18(0.57), 4.615(0.35), 2.667(0.31), 3.366(0.18),

Physical Properties of Zincalstibite

Cleavage:

{001} Distinct

Color:

Colorless.

Diaphaneity:

Transparent

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Zincalstibite

Optical Data:

Uniaxial (?).

NCalc= 2.35 - from Gladstone-Dale relationship (KC = 0.2022) where Ncalc=Dcalc*KC+1

Calculated Properties of Zincalstibite

Electron Density:

Bulk Density (Electron Density)=6.42 gm/cc
note: Specific Gravity of Zincalstibite =6.69 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Zincalstibite}= 90.90 barns/electron
U=PE_{Zincalstibite} x rElectron Density= 583.49 barns/cc.

Radioactivity:

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

Zincalstibite Classification

Dana Class:

44.03.10.02 (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 Zincalstibite Information

References:

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

See Also:

Links to other databases for Zincalstibite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Zincalstibite

Zn2AlSb(OH)12
Dana No: 44.03.10.02 Strunz No: 04.FB.10
Locality:

Notes:

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