Nickelaustinite Mineral Data

General Nickelaustinite Information

Chemical Formula:

Ca(Ni,Zn)(AsO4)(OH)

Composition:

Molecular Weight = 256.37 gm

Calcium 15.63 % Ca 21.87 % CaO

Zinc 6.38 % Zn 7.94 % ZnO

Nickel 17.17 % Ni 21.85 % NiO

Arsenic 29.22 % As 44.83 % As₂O₅

Hydrogen 0.39 % H 3.51 % H₂O

Oxygen 31.20 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaNi_0.75Zn_0.25(AsO₄)(OH)

Environment:

Dolomite rocks.

IMA Status:

Approved IMA 1987

Locality:

Bou Azzer, Anti-Atlas Mountains, Morocco. Link to MinDat.org Location Data.

Name Origin:

Named for the predominance of nickel in the composition and relation to austinite.

Name Pronunciation:

Nickelaustinite + Pronunciation

Synonym:

ICSD 202422

PDF 41-1425

Nickelaustinite Image

Images:

Nickelaustinite

Comments: Stellate aggregate of acicular nickelaustinite crystals associated with rhombohedral dolomite crystals. (CanMin, v25:401).
Location: Bou Azzer, Anti-Atlas Mountains, Morocco. Scale: Scale Bar 100 µm.
© Canadian Mineralogist

Nickelaustinite Crystallography

Axial Ratios:

a:b:c =0.8324:1:0.6606

Cell Dimensions:

a = 7.455, b = 8.955, c = 5.916, Z = 4; V = 394.95 Den(Calc)= 4.31

Crystal System:

Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 2₁2₁2₁

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

By Intensity(I/I_o): 2.626(1), 3.151(0.9), 3.769(0.9),

Physical Properties of Nickelaustinite

Color:

Grass green, Yellow green.

Density:

4.3

Diaphaneity:

Transparent

Hardness:

4 - Fluorite

Luster:

Silky

Streak:

light green

Optical Properties of Nickelaustinite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1796,KPDmeas= 0.18,KC= 0.1815
Ncalc = 1.78

Optical Data:

Biaxial (+), a=1.77, g=1.778, bire=0.0080

Calculated Properties of Nickelaustinite

Electron Density:

Bulk Density (Electron Density)=4.11 gm/cc
note: Specific Gravity of Nickelaustinite =4.30 gm/cc.

Fermion Index:

Fermion Index = 0.0049159518
Boson Index = 0.9950840482

Photoelectric:

PE_{Nickelaustinite}= 31.97 barns/electron
U=PE_{Nickelaustinite} x rElectron Density= 131.36 barns/cc.

Radioactivity:

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

Nickelaustinite Classification

Dana Class:

41.05.01.07 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.05)where (A B)2 (XO4) Zq

(41.05.01)Adelite Group

41.05.01.01 Adelite CaMg(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.02 Conichalcite CaCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.03 Austinite CaZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.04 Duftite-beta? PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.05 Gabrielsonite PbFe(AsO4)(OH) P 2₁m mm2

41.05.01.06 Tangeite CaCu(VO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.07 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.08 Cobaltaustinite CaCo(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.09 Arsendescloizite PbZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

41.05.01.10 Gottlobite! CaMg(VO4,AsO4)(OH) P 2₁2₁2₁ 2 2 2

Strunz Class:

08.BH.35 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1

08.BH.35 Austinite CaZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Adelite CaMg(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Arsendescloizite PbZn(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Duftite-alpha PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Duftite-beta? PbCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Cobaltaustinite CaCo(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Conichalcite CaCu(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Gabrielsonite PbFe(AsO4)(OH) P 2₁m mm2

08.BH.35 Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Tangeite CaCu(VO4)(OH) P 2₁2₁2₁ 2 2 2

08.BH.35 Gottlobite! CaMg(VO4,AsO4)(OH) P 2₁2₁2₁ 2 2 2

Other Nickelaustinite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Am.Min.,Vol.73,p930,1988) OPTIC PROP.(Am.Min.,Vol.73,p930,1988)

See Also:

Links to other databases for Nickelaustinite :
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

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Nickelaustinite

Ca(Ni,Zn)(AsO4)(OH)
Dana No: 41.05.01.07 Strunz No: 08.BH.35
Locality:

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