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Paraotwayite

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About ParaotwayiteHide

Formula:
Ni(OH)2-x(SO4,CO3)0.5x
Colour:
Emerald-green
Lustre:
Silky
Hardness:
4
Specific Gravity:
3.30
Crystal System:
Monoclinic
Name:
Named from the Greek 'para' for near, and otwayite, for the close compositional and physical similarity to that mineral.
A mineral closely related to otwayite.


Classification of ParaotwayiteHide

Approved
First Published:
1987
7.BB.45

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
B : With medium-sized cations
6.2.12.1

6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
2 : X(OH)2
12.2.21

12 : Carbonates with other anions
2 : Carbonates with sulphate

Physical Properties of ParaotwayiteHide

Silky
Colour:
Emerald-green
Streak:
White
Hardness:
Hardness:
VHN20=223(22) kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Density:
3.30 g/cm3 (Measured)    

Optical Data of ParaotwayiteHide

Type:
Biaxial
RI values:
nα = 1.655 nγ = 1.705
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak
Pleochroism:
Weak
Comments:
Bluish green parallel to the fibre length, and yellowish green normal to it.

Chemical Properties of ParaotwayiteHide

Formula:
Ni(OH)2-x(SO4,CO3)0.5x

Crystallography of ParaotwayiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.89 Å, b = 2.96 Å, c = 13.63 Å
β = 91.1°
Ratio:
a:b:c = 2.666 : 1 : 4.605
Unit Cell V:
318 ų
Z:
6

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.81(10)
5.083(8)
3.859(5)
2.946(4)
2.239(8)
Comments:
Only strongest lines

Type Occurrence of ParaotwayiteHide

Place of Conservation of Type Material:
Western Australian State Mineral Collection (Government Chemical Laboratories, Perth).
Museum of Victoria, Melbourne, Australia.
Reference:
Nickel, E. H. & Graham, J. (1987) Paraotwayite. A new nickel hydroxide mineral from Western Australia. Canadian Mineralogist: 25: 409-411.

Synonyms of ParaotwayiteHide

Other Language Names for ParaotwayiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Retgersite1 photo of Paraotwayite associated with Retgersite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.BB.05CaminiteMg7(SO4)5(OH)4 · H2OTet.
7.BB.10HauckiteFe3+3(Mg,Mn2+)24Zn18(SO4)4(CO3)2(OH)81Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
7.BB.15AntleriteCu3(SO4)(OH)4Orth. mmm (2/m 2/m 2/m)
7.BB.20DolerophaniteCu2(SO4)OMon. 2/m : B2/m
7.BB.25BrochantiteCu4(SO4)(OH)6Mon. 2/m : P21/b
7.BB.30VergasovaiteCu3(SO4)(MoO4,SO4)OOrth.
7.BB.35KlebelsbergiteSb4O4(SO4)(OH)2Orth. mm2
7.BB.40SchuetteiteHg2+3(SO4)O2Trig. 3 2 : P31 2 1
7.BB.50XocomecatliteCu3(TeO4)(OH)4Orth.
7.BB.55Pauflerite(V4+O)SO4Orth. mmm (2/m 2/m 2/m) : Pnma
7.BB.60GrandviewiteCu3Al9(SO4)2(OH)29Mon. 2 : P2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

12.2.1BurkeiteNa6(CO3)(SO4)2Orth.
12.2.2HanksiteNa22K(SO4)9(CO3)2ClHex. 6/m : P63/m
12.2.3TychiteNa6Mg2(CO3)4(SO4)Iso. m3 (2/m 3) : Fd3
12.2.4MotukoreaiteMg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : R3m
12.2.5FerrotychiteNa6(Fe,Mn,Mg)2(CO3)4(SO4)
12.2.6NakauriiteCu8(SO4)4(CO3)(OH)6 · 48H2OOrth.
12.2.7CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OOrth.
12.2.8RapidcreekiteCa2(SO4)(CO3) · 4H2OOrth.
12.2.9TatarskiteCa6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2OOrth.
12.2.10Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2OTrig.
12.2.11LeadhillitePb4(CO3)2(SO4)(OH)2Mon. 2/m : P21/b
12.2.12MacphersonitePb4(CO3)2(SO4)(OH)2Orth. mmm (2/m 2/m 2/m)
12.2.13SusannitePb4(CO3)2(SO4)(OH)2Trig. 3 : P3
12.2.14WherryitePb7Cu2(SO4)4(SiO4)2(OH)2Mon. 2/m : B2/m
12.2.15CaledonitePb5Cu2(SO4)3(CO3)(OH)6Orth. mm2 : Pmn21
12.2.16NasledovitePbMn3Al4(CO3)4(SO4)O5 · 5H2O
12.2.17JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2OHex.
12.2.18SchröckingeriteNaCa3(UO2)(CO3)3(SO4)F · 10H2OTric. 1 : P1
12.2.19ManganotychiteNa6Mn2(CO3)4(SO4)
12.2.20HauckiteFe3+3(Mg,Mn2+)24Zn18(SO4)4(CO3)2(OH)81Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
12.2.22Carrboydite(Ni1-xAlx)(SO4)x/2(OH)2 · nH2OHex.
12.2.23Mountkeithite[(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2OHex.
12.2.24CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1

Fluorescence of ParaotwayiteHide

No fluorescence under LW or SW UV.

Other InformationHide

Notes:
Not attacked by cold HCl or HNO3.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for ParaotwayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nickel, E. H. & Graham, J. (1987) Paraotwayite. A new nickel hydroxide mineral from Western Australia. Canadian Mineralogist: 25: 409-411.

Internet Links for ParaotwayiteHide

Localities for ParaotwayiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia (TL)
 
  • Western Australia
    • East Pilbara Shire
      • Nullagine
Nickel, E. H. & Graham, J. (1987): Paraotwayite. A new nickel hydroxide mineral from Western Australia. Canadian Mineralogist 25, 409-411.
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Taltal
Tom Loomis (Dakotamatrix) samples showed on his personal web site during 2007; http://tw.strahlen.org/fotoatlas1/meteorite_steineisen.html
Mineral and/or Locality  
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