Alvanite Mineral Data

General Alvanite Information

Chemical Formula:

(Zn,Ni)Al4(VO3)2(OH)12•2(H2O)

Composition:

Molecular Weight = 609.64 gm

Aluminum 17.70 % Al 33.45 % Al₂O₃

Vanadium 16.71 % V 24.59 % V₂O₃

Zinc 8.04 % Zn 10.01 % ZnO

Nickel 2.41 % Ni 3.06 % NiO

Hydrogen 2.65 % H 23.64 % H₂O

Oxygen 52.49 % O

______ ______

100.00 % 94.75 % = TOTAL OXIDE

Empirical Formula:

Zn_0.75Ni_0.25Al₄(VO3)₂(OH)₁₂•2(H₂O)

Environment:

Oxidation zone of a vanadiferous clay-anthraxolite horizon.

IMA Status:

Approved IMA 1959

Locality:

Several mines of the Kurumsak and Balasauskandyk districts, northwestern Kara-Tau Mountains, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for the ALuminum and VANadium in the composition.

Name Pronunciation:

Alvanite

Synonym:

ICSD 69459

PDF 13-386

Search for Alvanite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Alvanite Crystallography

Axial Ratios:

a:b:c =3.4699:1:1.7305

Cell Dimensions:

a = 17.808, b = 5.132, c = 8.881, Z = 2; beta = 92.11° V = 811.09 Den(Calc)= 2.50

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 4.46(1), 8.91(0.9), 7.85(0.8),

Physical Properties of Alvanite

Cleavage:

{010} Perfect

Color:

Bluish green, Blue black, Black.

Density:

2.41 - 2.49, Average = 2.45

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous (Glassy)

Streak:

gray

Optical Properties of Alvanite

Gladstone-Dale:

CI meas= -0.169 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.146 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2744,KPDmeas= 0.28,KC= 0.2394
Ncalc = 1.58 - 1.6

Optical Data:

Biaxial (-), a=1.658, g=1.714, bire=0.0560, 2V(Meas)=80-85.

Calculated Properties of Alvanite

Electron Density:

Bulk Density (Electron Density)=2.49 gm/cc
note: Specific Gravity of Alvanite =2.50 gm/cc.

Fermion Index:

Fermion Index = 0.0042439242
Boson Index = 0.9957560758

Photoelectric:

PE_Alvanite= 8.48 barns/electron
U=PE_Alvanite x rElectron Density= 21.12 barns/cc.

Radioactivity:

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

Alvanite Classification

Dana Class:

42.13.13.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.13)Dana Type

(42.13.13)Alvanite Group

42.13.13.01 Alvanite (Zn,Ni)Al4(VO3)2(OH)12•2(H2O) P 2₁/n 2/m

42.13.13.02 Ankinovichite! (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5 P 2₁/n 2/m

Strunz Class:

08.FE.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.F - Polyphosphates, Polyarsenates, [4]-Polyvanadates

08.FE -Ino-[4]-vanadates

08.FE.05 Alvanite (Zn,Ni)Al4(VO3)2(OH)12•2(H2O) P 2₁/n 2/m

08.FE.05 Ankinovichite! (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5 P 2₁/n 2/m

Other Alvanite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Alvanite :
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
15 - WWW-MINCRYST

Search for Alvanite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Alvanite :

A Bijoux Google Search for Alvanite
Adam's Minerals Google Search for Alvanite
Cape Minerals Google Search for Alvanite
Dakota Matrix Minerals Google Search for Alvanite
Excalibur Mineral Corp. Google Search for Alvanite
Exceptional Minerals Google Search for Alvanite
John Betts Fine Minerals Search for Alvanite
McDougall Minerals Google Search for Alvanite
Mineral News Website Link
Rock and Mineral Shows Google Search for Alvanite
Weinrich Minerals, Inc. Google Search for Alvanite

Ask about Alvanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Alvanite Specimen Label here :

Alvanite

(Zn,Ni)Al4(VO3)2(OH)12•2(H2O)
Dana No: 42.13.13.01 Strunz No: 08.FE.05
Locality:

Notes: