Paraotwayite Mineral Data + Say PARAOTWAYITE


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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)0.125(CO3)0.125
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.
 

Paraotwayite Image

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Paraotwayite

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 - DomaticH-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 Diaphaniety: Diaphaniety: 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
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:

relectron=3.26 gm/cc
note: rParaotwayite =3.30 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00702
Boson Index = 0.99298
Help on Photoelectric: Photoelectric:

PEParaotwayite = 22.52 barns/electron
U=PEParaotwayite x relectron= 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: 6.2.12.1 (6)Hydroxides and Oxides Containing Hydroxyl
  (6.2)where X++ (OH)2
  (6.2.12)Dana Group
 
6.2.12.1 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m
Help on  Strunz Class: Strunz Class: IV/F.03-50 IV - Oxides
  IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure
  IV/F.03 - Brucite series
 
IV/F.03-10 Brucite Mg(OH)2 P 3m1 3 2/m
 
IV/F.03-20 Amakinite (Fe,Mg)(OH)2 P 3m1 3 2/m
 
IV/F.03-30 Pyrochroite Mn(OH)2 P 3m1 3 2/m
 
IV/F.03-40 Theophrastite Ni(OH)2 P 3m1 3 2/m
 
IV/F.03-50 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m
 
IV/F.03-60 Sweetite Zn(OH)2 P 41212,P 43212 4 2 2
 
IV/F.03-70 Ashoverite Zn(OH)2 I 41/amd 4/m 2/m 2/m
 
IV/F.03-80 Wulfingite Zn(OH)2 P 212121 2 2 2
 
IV/F.03-90 Spertiniite Cu(OH)2 C mc21 mm2
 
IV/F.03-100 Portlandite Ca(OH)2 P 3m1 3 2/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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

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Paraotwayite

Ni(OH)2-x(SO4,CO3)0.5x x=.5
Dana No: 6.2.12.1 Strunz No: IV/F.03-50
Locality:

 

Notes:

 

 
   
 
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