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About RoseliteHide

Gustav Rose
Ca2(Co2+,Mg)(AsO4)2 · 2H2O
Rose-red, pink; rose coloured in transmitted light.
Vitreous, Sub-Vitreous, Resinous
Specific Gravity:
3.46 - 3.74
Crystal System:
Member of:
Named in 1824 by Armand Levy in honor of German mineralogist Gustav Rose [March 18, 1798 Berlin, Germany – July 15, 1873 Berlin, Germany], Professor of Mineralogy, University of Berlin.
Dimorph of:
Isostructural with:
Roselite Group. Roselite-Wendwilsonite Series.
The monoclinc dimorph of β-Roselite. The cobalt analogue of Wendwilsonite.

Classification of RoseliteHide

Approved, 'Grandfathered' (first described prior to 1959)

C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1

2 : AB2(XO4)2·xH2O

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

Physical Properties of RoseliteHide

Vitreous, Sub-Vitreous, Resinous
Transparent, Translucent
Rose-red, pink; rose coloured in transmitted light.
Darker coloured crystals frequently exhibit marked colour zoning due to variations in composition.
White to pale pink
3½ on Mohs scale
On {010}, perfect (easy).
3.46 - 3.74 g/cm3 (Measured)    3.65 g/cm3 (Calculated)
Density increases with Co content

Optical Data of RoseliteHide

Biaxial (-)
RI values:
nα = 1.694 - 1.725 nβ = 1.704 - 1.730 nγ = 1.719 - 1.735
Measured: 60° to 70°, Calculated: 68°
Max Birefringence:
δ = 0.025
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v weak
Optical Extinction:
X = b, X^c = ~0° - 4°, Y = b, Y^c = 12°-20°, Z^c = -70°to 91°
Light rose coloured material:
X = ^c~ 0° to 4° = Light rose pink to dark rose-pink, Y = paler rose pink than in X, Z = palest rose pink
Y = b = Lighter rose
Z = ^c~ 90° to +91° = lightest rose

Dark rose coloured material:
X = b = Dark rose
Y = ^c

Chemical Properties of RoseliteHide

Ca2(Co2+,Mg)(AsO4)2 · 2H2O
IMA Formula:
Ca2Co(AsO4)2 · 2H2O

Crystallography of RoseliteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 5.801 Å, b = 12.898 Å, c = 5.617 Å
β = 107.42°
a:b:c = 0.45 : 1 : 0.435
Unit Cell V:
401.00 ų (Calculated from Unit Cell)
Crystals short prismatic [001]; thick tabular {001} uncommon. Terminations commonly simple and exhibiting monoclinic or orthorhombic aspect with large {122} and {122}. Druses of interlocking crystals and spherical aggregates.
On {100}, very common, with {100} as the composition plane; also as fourlings.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.444 (20)
5.089 (20)
3.395 (35)
3.354 (60)
3.222 (75)
2.993 (100)
2.763 (50)

Type Occurrence of RoseliteHide

Geological Setting of Type Material:
Quartzose vein material
Associated Minerals at Type Locality:

Synonyms of RoseliteHide

Other Language Names for RoseliteHide


Relationship of Roselite to other SpeciesHide

Member of:
Other Members of this group:
BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
KröhnkiteNa2Cu(SO4)2 · 2H2OMon. 2/m : P21/b
RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
Unnamed (Fe2+-analogue of Brandtite)Ca2Fe2+(AsO4)2 · 2H2O
WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Calcite52 photos of Roselite associated with Calcite on mindat.org.
Dolomite45 photos of Roselite associated with Dolomite on mindat.org.
Cobaltaustinite23 photos of Roselite associated with Cobaltaustinite on mindat.org.
Heterogenite19 photos of Roselite associated with Heterogenite on mindat.org.
Cobaltlotharmeyerite14 photos of Roselite associated with Cobaltlotharmeyerite on mindat.org.
Quartz11 photos of Roselite associated with Quartz on mindat.org.
Erythrite7 photos of Roselite associated with Erythrite on mindat.org.
Wendwilsonite5 photos of Roselite associated with Wendwilsonite on mindat.org.
Cobaltoan Calcite5 photos of Roselite associated with Cobaltoan Calcite on mindat.org.
β-Roselite5 photos of Roselite associated with β-Roselite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CG.05CassidyiteCa2(Ni2+,Mg)(PO4)2 · 2H2OTric.
8.CG.05CollinsiteCa2(Mg,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric.
8.CG.05MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric.
8.CG.05β-RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
8.CG.05HilliteCa2(Zn,Mg)(PO4)2 · 2 H2OTric. 1 : P1
8.CG.10BrandtiteCa2(Mn2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.15FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.15LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon.
8.CG.15CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.20GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
8.CG.20ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
8.CG.20PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4·H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b · 2H2OMon. · 2H2OMon. 2/m : P21/b · 2H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.10.1ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.10.2CobaltaustiniteCaCo(AsO4)(OH)Orth. 2 2 2 : P21 21 21
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 RoseliteHide

Not fluorescent in UV

Other InformationHide

Readily soluble in acids.
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 RoseliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Lévy (1824) Annals of Philosophy, London: 8: 439.
Lévy (1825) Edinburgh Journal of Science: 2: 177.
Schrauf (1874) Mineralogische und petrographische Mitteilungen, Vienna: 137.
Winkler (1874) Zeitschrift praktische Chemie: 10: 190.
Weisbach (1877) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: 407.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 810.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 128.
Goldschmidt, V. (1922) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 7: 127.
Peacock (1936) American Mineralogist: 21: 589.
Wolfe (1940) American Mineralogist: 25: 750.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 723-725.
Canadian Mineralogist (1977): 36-42.
Dunn, P. J., Sturman, B. D., Nelen, J. A. (1987): Wendwilsonite, the magnesium analogue of roselite, from Morocco, New Jersey, and Mexico, and new data on roselite. Am. Mineral., 72, 217-221.
Weiss, S., Lengauer, C.L., Parodi, G.C. (2002): Roselith, Wendwilsonit und kobalthaltiger Talmessit aus Bou Azzer, Marokko. Lapis 27 (1), 37-41; 58. (in German)

Internet Links for RoseliteHide

Localities for RoseliteHide

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.
  • Queensland
    • Cloncurry Shire
      • Kajabbi
S. Mills XRD data
  • South Australia
    • Olary Province
      • Kalabity homestead area
Jack Leach collection & Museum of Victoria
  • Daşkəsən District (Daskasan; Dashkyasan)
    • Dashkesan
Pekov, I. V., Vinogradova, R. A., Chukanov, N. V., & Kulikova, I. M. (2001). On magnesian and cobalt arsenates of the fairfieldite and roselite groups. Zapiski Vseross. Mineral. Obshch.(Proc. Russ. Miner. Soc.), 130(4), 10-23.
  • British Columbia
    • Slocan Mining Division
      • Sandon
Mauthner, M.H.F. et al. (1996) Minerals of the Silvana Mine Sandon British Columbia. Mineralogical Record, 27(6):433-438.
  • Atacama Region
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
maurizio dini collection - quantitative analysis
  • Baden-Württemberg
    • Black Forest
      • Schapbach
        • Wildschapbach valley
Wittern: "Mineralfundorte in Deutschland", 2001
      • Schenkenzell
        • Wittichen
          • Heubach Valley
No reference listed
  • Hesse
    • Odenwald
      • Abtsteinach
        • Mackenheim
M Kampf collection
    • Richelsdorf District
      • Bauhaus
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Nentershausen
        • Süß
          • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
  • Rhineland-Palatinate
    • Siegerland
      • Betzdorf
        • Schutzbach
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony
    • Erzgebirge
      • Schneeberg District
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 753.
Lapis 30(7/8):41-70 (2005)
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 725.
Lapis 30(7/8):22-23 (2005)
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 725; Wittern: "Mineralfundorte in Deutschland", 2001
Lapis 30(7/8):22-23 (2005)
  • Esfahan Province (Isfahan Province; Aspadana Province)
    • Nain County (Nayin County)
      • Anarak District
Bariand, P., Bachet, B., Brassy, C., Medenbach, O., Deliens, M., Vautier, R., & Piret, P. (1993) A New Uranium Mineral from the Talmessi Mine, Iran, and Rabejac, France. Mineralogical Record: 24: 463-467
  • Piedmont
    • Torino Province
      • Lanzo Valleys
        • Viù Valley
          • Usseglio
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
  • 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
JP Barral collection
          • Aït Ahmane
Georges FAVREAU collection
          • Bou Azzer Mine (Bou Azer Mine; Bouazzar Mine)
Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
          • Oumlil
M. Kampf collection
Mineral and/or Locality  
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