Anorthoroselite
A valid IMA mineral species - grandfathered
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About Anorthoroselite
Formula:
Ca2Co(AsO4)2 · 2H2O
Often contains minor Mg replacing Co.
Colour:
Dark rose red, dark pink
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
3.71
Crystal System:
Triclinic
Member of:
Name:
Originally name beta-roselite, for its being a dimorph of roselite. Also written as roselite-β. Renamed to anorthoroselite in 2022, where the 'anortho' prefix is Greek for "not right angle", indicating that it is a triclinic dimorph.
Type Locality:
Dimorph of:
Unique Identifiers
Mindat ID:
3451
Long-form identifier:
mindat:1:1:3451:3
GUID
(UUID V4):
(UUID V4):
b86fa711-3947-4199-b356-915b1f74e506
IMA Classification of Anorthoroselite
Approved, 'Grandfathered' (first described prior to 1959)
IMA status notes:
Renamed by the IMA
First published:
1955
Classification of Anorthoroselite
8.CG.05
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
40.2.2.7
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
20.10.4
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
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rsl-β | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Anorthoroselite
Vitreous
Transparency:
Translucent
Colour:
Dark rose red, dark pink
Streak:
Red, pale
Hardness:
3½ - 4 on Mohs scale
Cleavage:
Perfect
{010}
{010}
Density:
3.71 g/cm3 (Measured) 3.77 g/cm3 (Calculated)
Optical Data of Anorthoroselite
Type:
Biaxial (-)
RI values:
nα = 1.723 nβ = 1.737 nγ = 1.756
2V:
Measured: 80° to 90°
Max Birefringence:
δ = 0.033
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:
High
Dispersion:
r > v
Pleochroism:
Visible
Comments:
X = pink; Y = pale pink; Z = nearly colorless.
Chemistry of Anorthoroselite
Mindat Formula:
Ca2Co(AsO4)2 · 2H2O
Often contains minor Mg replacing Co.
Often contains minor Mg replacing Co.
Common Impurities:
Mg
Crystallography of Anorthoroselite
Crystal System:
Triclinic
Cell Parameters:
a = 5.88 Å, b = 7.67 Å, c = 5.58 Å
α = 112.32°, β = 71.35°, γ = 119.68°
α = 112.32°, β = 71.35°, γ = 119.68°
Ratio:
a:b:c = 0.767 : 1 : 0.728
Unit Cell V:
199.52 ų (Calculated from Unit Cell)
Z:
1
Comment:
Point Group: 1 or 1.;Space Group: P1 or P1.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.75 Å | (100) |
| 3.08 Å | (90) |
| 3.59 Å | (60) |
| 3.98 Å | (40) |
| 3.22 Å | (40) |
| 1.894 Å | (40) |
| 1.719 Å | (40) |
Comments:
Nearly identical to pattern of talmessite.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Anorthoroselite
General Appearance of Type Material:
As granular aggregates.
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1956,196; Harvard University, Cambridge, Massachusetts, USA, 105301.
Geological Setting of Type Material:
A rare secondary mineral in cobalt-bearing hydrothermal mineral deposits.
Associated Minerals at Type Locality:
Reference:
Frondel, C. (1955): Neomesselite and Beta-roselite: two new members of the fairfieldite group.- American Mineralogist 40, 828-833.
Synonyms of Anorthoroselite
Other Language Names for Anorthoroselite
German:β-Roselit
β-Roselith
β-Roselith
Italian:β-Roselita
Relationship of Anorthoroselite to other Species
Member of:
Other Members of this group:
| Cassidyite | Ca2Ni(PO4)2 · 2H2O | Tric. |
| Collinsite | Ca2Mg(PO4)2 · 2H2O | Tric. 1 : P1 |
| Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O | Tric. 1 : P1 |
| Gaitite | Ca2Zn(AsO4)2 · 2H2O | Tric. 1 : P1 |
| Hillite | Ca2Zn(PO4)2 · 2H2O | Tric. 1 : P1 |
| Messelite | Ca2Fe2+(PO4)2 · 2H2O | Tric. 1 : P1 |
| Nickeltalmessite | Ca2Ni(AsO4)2 · 2H2O | Tric. 1 : P1 |
| Parabrandtite | Ca2Mn2+(AsO4)2 · 2H2O | Tric. 1 : P1 |
| Talmessite | Ca2Mg(AsO4)2 · 2H2O | Tric. 1 : P1 |
| Unnamed (Fe2+-analogue of Parabrandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
| 18 photos of Anorthoroselite associated with Calcite | CaCO3 |
| 15 photos of Anorthoroselite associated with Roselite | Ca2Co(AsO4)2 · 2H2O |
| 9 photos of Anorthoroselite associated with Cobaltaustinite | CaCo(AsO4)(OH) |
| 4 photos of Anorthoroselite associated with Goethite | α-Fe3+O(OH) |
| 4 photos of Anorthoroselite associated with Cobalt-bearing Calcite | (Ca,Co)CO3 |
| 4 photos of Anorthoroselite associated with Cobaltlotharmeyerite | CaCo2(AsO4)2 · 2H2O |
| 3 photos of Anorthoroselite associated with Dolomite | CaMg(CO3)2 |
| 2 photos of Anorthoroselite associated with Conichalcite | CaCu(AsO4)(OH) |
| 1 photo of Anorthoroselite associated with Hematite | Fe2O3 |
| 1 photo of Anorthoroselite associated with Heterogenite | Co3+O(OH) |
Related Minerals - Strunz-mindat Grouping
| 8.CG. | Ca-Huréaulite | CaMn5(PO4)4 · 4H2O |
| 8.CG. | Fluckite | CaMn2+(AsO3OH)2 · 2H2O |
| 8.CG. | Dondoellite | Ca2Fe(PO4)2 · 2H2O |
| 8.CG. | Alumolukrahnite | Ca[CuAl](AsO4)2(H2O,OH)2 |
| 8.CG.05 | Cassidyite | Ca2Ni(PO4)2 · 2H2O |
| 8.CG.05 | Collinsite | Ca2Mg(PO4)2 · 2H2O |
| 8.CG.05 | Fairfieldite | Ca2Mn2+(PO4)2 · 2H2O |
| 8.CG.05 | Gaitite | Ca2Zn(AsO4)2 · 2H2O |
| 8.CG.05 | Messelite | Ca2Fe2+(PO4)2 · 2H2O |
| 8.CG.05 | Parabrandtite | Ca2Mn2+(AsO4)2 · 2H2O |
| 8.CG.05 | Talmessite | Ca2Mg(AsO4)2 · 2H2O |
| 8.CG.05 | Hillite | Ca2Zn(PO4)2 · 2H2O |
| 8.CG.05 | Unnamed (Fe2+-analogue of Parabrandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
| 8.CG.10 | Brandtite | Ca2Mn2+(AsO4)2 · 2H2O |
| 8.CG.10 | Roselite | Ca2Co(AsO4)2 · 2H2O |
| 8.CG.10 | Wendwilsonite | Ca2Mg(AsO4)2 · 2H2O |
| 8.CG.10 | Zincroselite | Ca2Zn(AsO4)2 · 2H2O |
| 8.CG.10 | Rruffite | Ca2Cu(AsO4)2 · 2H2O |
| 8.CG.10 | Unnamed (Fe2+-analogue of Brandtite) | Ca2Fe2+(AsO4)2 · 2H2O |
| 8.CG.15 | Ferrilotharmeyerite | CaZnFe3+(AsO4)2(OH) · H2O |
| 8.CG.15 | Lotharmeyerite | CaZn2(AsO4)2 · 2H2O |
| 8.CG.15 | Mawbyite | PbFe3+2(AsO4)2(OH)2 |
| 8.CG.15 | Mounanaite | PbFe3+2(VO4)2(OH,F)2 |
| 8.CG.15 | Thometzekite | PbCu2+2(AsO4)2 · 2H2O |
| 8.CG.15 | Tsumcorite | PbZn2(AsO4)2 · 2H2O |
| 8.CG.15 | Cobaltlotharmeyerite | CaCo2(AsO4)2 · 2H2O |
| 8.CG.15 | Cabalzarite | CaMg2(AsO4)2 · 2H2O |
| 8.CG.15 | Krettnichite | PbMn3+2(VO4)2(OH)2 |
| 8.CG.15 | Cobalttsumcorite | PbCo2(AsO4)2 · 2H2O |
| 8.CG.15 | Nickellotharmeyerite | CaNi2(AsO4)2 · 2H2O |
| 8.CG.15 | Manganlotharmeyerite | CaMn3+2(AsO4)2(OH)2 |
| 8.CG.15 | Schneebergite | BiCo2(AsO4)2(OH) · H2O |
| 8.CG.15 | Nickelschneebergite | BiNi2(AsO4)2(OH) · H2O |
| 8.CG.15 | Yancowinnaite | PbCuAl(AsO4)2OH · H2O |
| 8.CG.15 | Nickeltsumcorite | Pb(Ni,Fe3+)2(AsO4)2(H2O,OH)2 |
| 8.CG.15 | Magnesiofluckite | CaMg(AsO3OH)2(H2O)2 |
| 8.CG.20 | Gartrellite | PbCuFe3+(AsO4)2(OH) · H2O |
| 8.CG.20 | Helmutwinklerite | PbZn2(AsO4)2 · 2H2O |
| 8.CG.20 | Zincgartrellite | PbZn2(AsO4)2(H2O,OH)2 |
| 8.CG.20 | Rappoldite | PbCo2(AsO4)2 · 2H2O |
| 8.CG.20 | Phosphogartrellite | PbCuFe3+(PO4)2(OH,H2O)2 |
| 8.CG.20 | Lukrahnite | CaCuFe3+(AsO4)2(OH,H2O)2 |
| 8.CG.25 | Pottsite | (Pb3xBi4-2x)(VO4)4 · H2O (0.8 < x < 1.0) |
| 8.CG.25 | Armellinoite-(Ce) | Ca4Ce4+(AsO4)4 · H2O |
| 8.CG.35 | Nickeltalmessite | Ca2Ni(AsO4)2 · 2H2O |
| 8.CG.55 | Irhtemite | Ca4Mg(AsO4)2(HAsO4)2 · 4H2O |
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.
Internet Links for Anorthoroselite
mindat.org URL:
https://www.mindat.org/min-3451.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Anorthoroselite
Localities for Anorthoroselite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| S. Mills XRD data |
| Simpson Mineral Collection of the ... |
Chile | |
| Ruiz Fuller C.-Peebles F. +1 other reference |
France | |
| Favreau et al. (2003) |
Germany | |
| Belendorff (1986) |
| Weiß (1990) |
| www.meteorite-lab.org (n.d.) | |
| Schnorrer-Köhler (1988) | |
| Weiß (1990) |
| Schnorrer-Köhler (1988) |
| Frondel (1955) |
| Lapis 30 (7/8) |
Morocco | |
| Fabre mineral specimen & photo (analyzed) |
| Favreau et al. (2006) |
| Favreau et al. (2007) |
| Favreau et al. (2006) | |
| www.spiriferminerals.com (2010) |
| Favreau et al. (2006) |
| |
| Favreau et al. (2006) | |
| Favreau et al. (2006) | |
| Favreau et al. (2006) |
| Favreau et al. (2006) |
| Favreau et al. (2006) |
Namibia | |
| Gebhard (1999) |
Spain | |
| Calvo Rebollar et al. (2022) |
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Bou Azzer mining district, Drâa-Tafilalet Region, Morocco