Cobaltaustinite
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About Cobaltaustinite
Formula:
CaCo(AsO4)(OH)
Colour:
Dull green
Lustre:
Sub-Vitreous, Earthy
Hardness:
4½
Specific Gravity:
4.24 (Calculated)
Crystal System:
Orthorhombic
Member of:
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.
Adelite-Descloizite Group. Cobaltaustinite-Conichalcite Series.
The Co-analogue of Austinite and Nickelaustinite.
The Co-analogue of Austinite and Nickelaustinite.
Classification of Cobaltaustinite
Approved
Approval Year:
1987
7/B.26-30
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
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
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
20 : Arsenates (also arsenates with phosphate, but without other anions)
10 : Arsenates of Co and Ni
Physical Properties of Cobaltaustinite
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 Cobaltaustinite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v slight
Pleochroism:
Non-pleochroic
Chemical Properties of Cobaltaustinite
Crystallography of Cobaltaustinite
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
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0010473 | Cobaltaustinite | Yang H, Costin G, Keogh J, Lu R, Downs R T (2007) Cobaltaustinite, CaCo(AsO4)(OH) Acta Crystallographica E63 i53-i55 | ![]() | 2007 | Dome Rock, Mingary, South Australia, Australia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.13 Å | (70) |
3.159 Å | (100) |
2.801 Å | (50 broad) |
2.633 Å | (80) |
2.600 Å | (80) |
2.532 Å | (40) |
1.609 Å | (100) |
Comments:
Dome Rock mine, South Australia, Australia
Type Occurrence of Cobaltaustinite
Place of Conservation of Type Material:
Western Australian Museum, Perth, Australia;
Museum Victoria, Melbourne, 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 Cobaltaustinite
Other Language Names for Cobaltaustinite
German:Cobaltaustinit
Kobaltaustinit
Kobaltaustinit
Spanish:Cobaltaustinita
Varieties of Cobaltaustinite
Relationship of Cobaltaustinite to other Species
Member of:
Other Members of this group:
Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Duftite-alpha | PbCu(AsO4)(OH) | |
Gabrielsonite | PbFe3+(As3+O3)O | Orth. mm2 : Pmc21 |
Gottlobite | CaMg(VO4,AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Vuagnatite | CaAl(SiO4)(OH) | Orth. |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
24 photos of Cobaltaustinite associated with Cobaltlotharmeyerite | CaCo2(AsO4)2 · 2H2O |
23 photos of Cobaltaustinite associated with Roselite | Ca2Co(AsO4)2 · 2H2O |
12 photos of Cobaltaustinite associated with Dolomite | CaMg(CO3)2 |
9 photos of Cobaltaustinite associated with Erythrite | Co3(AsO4)2 · 8H2O |
9 photos of Cobaltaustinite associated with Calcite | CaCO3 |
7 photos of Cobaltaustinite associated with Wendwilsonite | Ca2Mg(AsO4)2 · 2H2O |
2 photos of Cobaltaustinite associated with Talmessite - β-Roselite Series | |
2 photos of Cobaltaustinite associated with Talmessite | Ca2Mg(AsO4)2 · 2H2O |
2 photos of Cobaltaustinite associated with Lavendulan | NaCaCu5(AsO4)4Cl · 5H2O |
2 photos of Cobaltaustinite associated with β-Roselite | Ca2Co(AsO4)2 · 2H2O |
Related Minerals - Nickel-Strunz Grouping
8.BH. | Crimsonite | PbFe3+2(PO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 | Orth. 2 2 2 : C2 2 21 |
8.BH.10 | Durangite | NaAl(AsO4)F | Mon. 2/m : B2/b |
8.BH.10 | Isokite | CaMg(PO4)F | Mon. 2/m : B2/b |
8.BH.10 | Lacroixite | NaAl(PO4)F | Mon. 2/m : B2/b |
8.BH.10 | Maxwellite | NaFe3+(AsO4)F | Mon. 2/m : P2/m |
8.BH.10 | Panasqueiraite | CaMg(PO4)(OH,F) | Mon. |
8.BH.10 | Tilasite | CaMg(AsO4)F | Mon. m : Bb |
8.BH.15 | Drugmanite | Pb2(Fe3+,Al)(PO4)(PO3OH)(OH)2 | Mon. 2/m : P21/b |
8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 | Mon. |
8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) | |
8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 | Mon. |
8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.25 | Bertossaite | (Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4 | Orth. |
8.BH.25 | Palermoite | (Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4 | Orth. |
8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
8.BH.35 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Gabrielsonite | PbFe3+(As3+O3)O | Orth. mm2 : Pmc21 |
8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Gottlobite | CaMg(VO4,AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.40 | Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
8.BH.40 | Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.40 | Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 | Mon. 2/m : B2/b |
8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 | Mon. 2/m : B2/m |
8.BH.50 | Paganoite | NiBi(AsO4)O | Tric. 1 : P1 |
8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 | Tric. |
8.BH.60 | Attakolite | CaMn2+Al4(SiO3OH)(PO4)3(OH)4 | Mon. 2/m : B2/m |
8.BH.65 | Leningradite | PbCu3(VO4)2Cl | Orth. mmm (2/m 2/m 2/m) : Ibam |
Related Minerals - Dana Grouping (8th Ed.)
41.5.1.1 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.2 | Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.3 | Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.4 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.5 | Gabrielsonite | PbFe3+(As3+O3)O | Orth. mm2 : Pmc21 |
41.5.1.6 | Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.7 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.9 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.11 | Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
20.10.1 | Erythrite | Co3(AsO4)2 · 8H2O | Mon. 2/m : B2/m |
20.10.3 | Roselite | Ca2Co(AsO4)2 · 2H2O | Mon. 2/m : P21/b |
20.10.4 | β-Roselite | Ca2Co(AsO4)2 · 2H2O | Tric. |
20.10.5 | Wendwilsonite | Ca2Mg(AsO4)2 · 2H2O | Mon. 2/m : P21/b |
20.10.6 | Cobaltkoritnigite | (Co,Zn)(HAsO4) · H2O | Tric. 1 : P1 |
20.10.7 | Aerugite | Ni8.5(AsO4)2As5+O8 | Mon. 2/m : B2/m |
20.10.8 | Xanthiosite | Ni3(AsO4)2 | Mon. 2/m : P21/b |
20.10.9 | Annabergite | Ni3(AsO4)2 · 8H2O | Mon. 2/m : B2/m |
20.10.10 | Smolyaninovite | Co3Fe3+2(AsO4)4 · 11H2O | Orth. |
20.10.11 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Fluorescence of Cobaltaustinite
Not fluorescent
Other Information
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 Cobaltaustinite
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 Cobaltaustinite
mindat.org URL:
https://www.mindat.org/min-1099.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Cobaltaustinite
Locality List




All localities listed without proper references should be considered as questionable.
Australia | |
| Listed in the collection of Museum Victoria and it has been microprobed there.; Day, B. and Beyer, B., 1995, Some mines of the Mt Isa district, Queensland; the Mt Cobalt mine. Australian Journal of Mineralogy 1(2): 17-23. |
| 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. |
| Jack Leach collection & Museum of Victoria |
Germany | |
| Lapis 30(7/8):41-70 (2005) |
Mineralogical Record: 32: 418. | |
Greece | |
| [MinMax website] |
| Katerinopoulos, A. (1996): Bisher nicht bekannte Minerale aus den Lavrion-Bergwerken. Lapis, 21 (11), 39; 62. |
Morocco | |
| 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 | |
| Tomasz Praszkier (2010) Lapis, 35, #11, 29-31. |
| 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 | |
Spain | |
| Rewitzer, C., Calvo, M. Hochleitner, R., and Utrera, C. (2018). Adamite, austinite, schlegelite, dugganite and other uncommon minerals in the “Cogolla Alta” claim,Belalcázar, Córdoba, Spain. Mineral Up, 5 (2), 50-77. |
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Aghbar open pit, Aghbar, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco