Paraotwayite Mineral Data

General Paraotwayite Information

Chemical Formula:

Ni(OH)2-x(SO4,CO3)0.5x x=.5

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

Empirical Formula:

Ni(OH)_1.5(SO₄)_0.12(CO₃)_0.12

IMA Status:

Approved IMA 1987

Locality:

Otway nickel deposit, Nullagine, Pilbara region, WA. Australia. Link to MinDat.org Location Data.

Name Origin:

Named for its close physical and chemical resemblance to otwayite.

Name Pronunciation:

Paraotwayite + Pronunciation

Paraotwayite Image

Images:

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

Axial Ratios:

a:b:c =2.6655:1:4.6047

Cell Dimensions:

a = 7.89, b = 2.96, c = 13.63, Z = 6; beta = 91.1° V = 318.26 Den(Calc)= 3.25

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Pm

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

By Intensity(I/I_o): 6.81(1), 2.239(0.8), 5.083(0.8),

Physical Properties of Paraotwayite

Cleavage:

None

Color:

Emerald green.

Density:

3.3

Diaphaneity:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

4 - Fluorite

Luster:

Silky

Streak:

white

Optical Properties of Paraotwayite

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

Optical Data:

Biaxial (?), a=1.655, g=1.705, bire=0.0500

Calculated Properties of Paraotwayite

Electron Density:

Bulk Density (Electron Density)=3.26 gm/cc
note: Specific Gravity of Paraotwayite =3.30 gm/cc.

Fermion Index:

Fermion Index = 0.0070218815
Boson Index = 0.9929781185

Photoelectric:

PE_Paraotwayite= 22.52 barns/electron
U=PE_Paraotwayite x rElectron Density= 73.44 barns/cc.

Radioactivity:

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

Paraotwayite Classification

Dana Class:

06.02.12.01 (06)Hydroxides and Oxides Containing Hydroxyl

(06.02)where X++ (OH)2

(06.02.12)Dana Group

06.02.12.01 Paraotwayite Ni(OH)2-x(SO4,CO3)0.5xx=.5 Pm m

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

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.73,p1496,1988)

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

Search for Paraotwayite using:

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

Visit our Advertisers for Paraotwayite :

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

Ask about Paraotwayite 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 Paraotwayite Specimen Label here :

Paraotwayite

Ni(OH)2-x(SO4,CO3)0.5x x=.5
Dana No: 06.02.12.01 Strunz No: 07.BB.45
Locality:

Notes: