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Cobaltaustinite

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Formula:
CaCo(AsO4)(OH)
Colour:
Dull green
Lustre:
Sub-Vitreous, Earthy
Hardness:
Specific Gravity:
4.24 (Calculated)
Crystal System:
Orthorhombic
Name:
Named by Ernest H. Nickel and William D. Birch in 1988 after Austin Flint Rogers (1877-1957), American mineralogist at Stanford University, and in allusion to the dominance of Co in the composition.
Hide all sections | Show all sections

Classification of CobaltaustiniteHide

Approved
Approval Year:
1987
8.BH.35

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.5.1.8

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
20.10.2

20 : Arsenates (also arsenates with phosphate, but without other anions)
10 : Arsenates of Co and Ni

Physical Properties of CobaltaustiniteHide

Sub-Vitreous, Earthy
Transparency:
Transparent
Colour:
Dull green
Streak:
Light green
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.24 g/cm3 (Calculated)

Optical Data of CobaltaustiniteHide

Type:
Biaxial (+)
RI values:
nα = 1.777 nγ = 1.802
Birefringence:
0.024
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v slight
Pleochroism:
Non-pleochroic

Chemical Properties of CobaltaustiniteHide

Formula:
CaCo(AsO4)(OH)
IMA Formula:
CaCoAsO4(OH)

Crystallography of CobaltaustiniteHide

Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Setting:
P21 21 21
Cell Parameters:
a = 7.498 Å, b = 9.01 Å, c = 5.92 Å
Ratio:
a:b:c = 0.832 : 1 : 0.657
Unit Cell V:
399.94 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.13 (70)
3.159 (100)
2.801 (50 broad)
2.633 (80)
2.600 (80)
2.532 (40)
1.609 (100)
Comments:
Dome Rock mine, South Australia, Australia

Type Occurrence of CobaltaustiniteHide

Place of Conservation of Type Material:
Western Australian Museum, Perth, Australia;
Museum Victoria, Melbourne, Australia
Geological Setting of Type Material:
Oxidised zone in the Dome Rock copper deposit, as alteration product of arsenides.
Associated Minerals at Type Locality:

Synonyms of CobaltaustiniteHide

Other Language Names for CobaltaustiniteHide

Varieties of CobaltaustiniteHide

Relationship of Cobaltaustinite to other SpeciesHide

Other Members of this group:
AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
GabrielsonitePbFe(AsO4)(OH)Orth. mm2 : Pmc21
GottlobiteCaMg(VO4,AsO4)(OH)Orth. 2 2 2 : P21 21 21
HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21
MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
VuagnatiteCaAl(SiO4)(OH)Orth.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cobaltlotharmeyerite24 photos of Cobaltaustinite associated with Cobaltlotharmeyerite on mindat.org.
Roselite23 photos of Cobaltaustinite associated with Roselite on mindat.org.
Dolomite12 photos of Cobaltaustinite associated with Dolomite on mindat.org.
Erythrite9 photos of Cobaltaustinite associated with Erythrite on mindat.org.
Calcite9 photos of Cobaltaustinite associated with Calcite on mindat.org.
Wendwilsonite7 photos of Cobaltaustinite associated with Wendwilsonite on mindat.org.
Talmessite - β-Roselite Series2 photos of Cobaltaustinite associated with Talmessite - β-Roselite Series on mindat.org.
Talmessite2 photos of Cobaltaustinite associated with Talmessite on mindat.org.
Lavendulan2 photos of Cobaltaustinite associated with Lavendulan on mindat.org.
β-Roselite2 photos of Cobaltaustinite associated with β-Roselite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
8.BH.10DurangiteNaAl(AsO4)FMon. 2/m : B2/b
8.BH.10IsokiteCaMg(PO4)FMon. 2/m : B2/b
8.BH.10LacroixiteNaAl(PO4)FMon. 2/m : B2/b
8.BH.10MaxwelliteNaFe3+(AsO4)FMon.
8.BH.10PanasqueiraiteCaMg(PO4)(OH,F)Mon.
8.BH.10TilasiteCaMg(AsO4)FMon. m : Bb
8.BH.15DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2Mon. 2/m : P21/b
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20PerloffiteBa(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20JohntomaiteBaFe2+2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.25Bertossaite(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4Orth.
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
8.BH.30CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.30SewarditeCaFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.35AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GabrielsonitePbFe(AsO4)(OH)Orth. mm2 : Pmc21
8.BH.35NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.40ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
8.BH.40DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.45BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2Mon. 2/m : B2/m
8.BH.50PaganoiteNiBi(AsO4)OTric.
8.BH.55JagoweriteBaAl2(PO4)2(OH)2Tric.
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
8.BH.65LeningraditePbCu3(VO4)2ClOrth. mmm (2/m 2/m 2/m) : Ibam

Related Minerals - Dana Grouping (8th Ed.)Hide

41.5.1.1AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.2ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.3AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.4DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.5GabrielsonitePbFe(AsO4)(OH)Orth. mm2 : Pmc21
41.5.1.6TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.7NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.9ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
41.5.1.11HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.10.1ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.10.3RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
20.10.4β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OTric.
20.10.5WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
20.10.6Cobaltkoritnigite(Co,Zn)(HAsO4) · H2OTric. 1 : P1
20.10.7AerugiteNi8.5(AsO4)2As5+O8Mon. 2/m : B2/m
20.10.8XanthiositeNi3(AsO4)2Mon. 2/m : P21/b
20.10.9AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.10.10SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2OOrth.
20.10.11NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21

Fluorescence of CobaltaustiniteHide

Not fluorescent

Other InformationHide

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 CobaltaustiniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nickel, E.H. & W.D. Birch (1988) Cobaltaustinite - a new arsenate mineral from Dome Rock, South Australia: Australian Mineralogist:3:53-57. American Mineralogist (1989) 74: 501 [abstract].
Effenberger, H., Krause, W., and Bernhardt, H.-J. (2002) Structural investigation of adelite and cobaltaustinite, two members of the Adelite-descloizite Group. EMPG IX, Ninth International Symposium on Experimental Mineralogy, Petrology and Geochemistry, Zürich, Switzerland, 24.-27.3, Book of Abstracts (2002), 30.
H. Yang, G. Costin, J. Keogh, R. Lu and R. T. Downs (2007) Cobaltaustinite, CaCo(AsO4)(OH). Acta Crystallographica E63, i53-i55.

Internet Links for CobaltaustiniteHide

Localities for CobaltaustiniteHide

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)
 
  • South Australia
    • Olary Province
      • Boolcoomatta Reserve (Boolcoomata Station; Boolcoomatta)
Nickel, E.H. & W.D. Birch:1988: Cobaltaustinite - a new arsenate mineral from Dome Rock, South Australia": Australian Mineralogist:3:53-57; Vera Munro-Smith (2006) Cobalt Mineralisation in Selected Australian Deposits. PhD thesis, University of Western Sydney.
      • Kalabity homestead area
Jack Leach collection & Museum of Victoria
Germany
 
  • Saxony
    • Erzgebirge
      • Schneeberg District
        • Neustädtel
Lapis 30(7/8):41-70 (2005)
Mineralogical Record: 32: 418.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
[MinMax website]
        • Agios Konstantinos [St Constantine] (Kamariza)
Katerinopoulos, A. (1996): Bisher nicht bekannte Minerale aus den Lavrion-Bergwerken. Lapis, 21 (11), 39; 62.
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
          • Aghbar
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Agoudal
Tomasz Praszkier (2010) Lapis, 35, #11, 29-31.
          • Aït Ahmane
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Bou Azer
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
Mineral and/or Locality  
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