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Paraotwayite Mineral Data

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General Paraotwayite Information

Help on Chemical  Formula: Chemical Formula: Ni(OH)2-x(SO4,CO3)0.5x x=.5
Help on Composition: Composition: Molecular Weight = 103.71 gm
   Nickel    56.59 %  Ni   72.02 % NiO
   Hydrogen   1.46 %  H    13.03 % H2O
   Carbon     1.45 %  C     5.30 % CO2
   Sulfur     3.86 %  S     9.65 % SO3
   Oxygen    36.64 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni(OH)1.5(SO4)0.12(CO3)0.12
Help on IMA Status: IMA Status: Approved IMA 1987
Help on Locality: Locality: Otway nickel deposit, Nullagine, Pilbara region, WA. Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its close physical and chemical resemblance to otwayite.
Help on Name Pronunciation: Name Pronunciation: Paraotwayite + Pronunciation Say PARAOTWAYITE

Paraotwayite Image

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Comments: Pale green, fibrous, silky, free standing paraotwayite crystals to about 0.25mm.
Location: Vaca Murta meteorite, Taltal, Atacama, Chile. Scale: Crystal size .25 mm.
© Tom Loomis / Dakota Matrix

Paraotwayite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.6655:1:4.6047
Help on Cell Dimensions: Cell Dimensions: a = 7.89, b = 2.96, c = 13.63, Z = 6; beta = 91.1° V = 318.26 Den(Calc)= 3.25
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Pm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.81(1), 2.239(0.8), 5.083(0.8),

Physical Properties of Paraotwayite

Help on Cleavage: Cleavage: None
Help on Color: Color: Emerald green.
Help on Density: Density: 3.3
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Silky
Help on Streak: Streak: white

Optical Properties of Paraotwayite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2092,KPDmeas= 0.2061,KC= 0.1993
Ncalc = 1.65 - 1.66
Help on Optical Data: Optical Data: Biaxial (?), a=1.655, g=1.705, bire=0.0500

Calculated Properties of Paraotwayite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.26 gm/cc
note: Specific Gravity of Paraotwayite =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0070218815
Boson Index = 0.9929781185
Help on Photoelectric: Photoelectric: PEParaotwayite = 22.52 barns/electron
U=PEParaotwayite x rElectron Density= 73.44 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paraotwayite is Not Radioactive

Paraotwayite Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.02)where X++ (OH)2
  (06.02.12)Dana Group Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m
Help on  Strunz Class: Strunz Class: 07.BB.45 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BB -With medium-sized cations
07.BB.45 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m

Other Paraotwayite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.73,p1496,1988)
Help on See Also: See Also: Links to other databases for Paraotwayite :
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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Ni(OH)2-x(SO4,CO3)0.5x x=.5
Dana No: Strunz No: 07.BB.45





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