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Cobaltlotharmeyerite

A valid IMA mineral species
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About CobaltlotharmeyeriteHide

00860130014947386883463.jpg
Julius Lothar Meyer (1830-1895)
Formula:
CaCo2(AsO4)2 · 2H2O
Co may be replaced by minor Fe3+.
Colour:
Light brown to reddish brown
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.13 (Calculated)
Crystal System:
Monoclinic
Name:
Named as the cobalt-dominant analogue of lotharmeyerite.

Unique IdentifiersHide

Mindat ID:
6885
Long-form identifier:
mindat:1:1:6885:3
GUID
(UUID V4):
e81c968e-30bf-424d-93a1-a24b3d8891bc

IMA Classification of CobaltlotharmeyeriteHide

Classification of CobaltlotharmeyeriteHide

8.CG.15

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
ClmyIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of CobaltlotharmeyeriteHide

Vitreous
Transparency:
Translucent
Colour:
Light brown to reddish brown
Streak:
Light brown
Hardness:
4½ on Mohs scale
Cleavage:
None Observed
Density:
4.13 g/cm3 (Calculated)

Optical Data of CobaltlotharmeyeriteHide

Type:
Biaxial (+)
RI values:
nα = 1.780 nβ = 1.790(1) nγ = 1.850(2)
2V:
Measured: 48° (5), Calculated: 46°
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct
Optical Extinction:
Y = b; X ∧ c = 10° (in the obtuse of β).
Pleochroism:
Strong
Comments:
X = yellow; Y = brown; Z = pale yellow.
Comments:
α calculated.
Absorption: Y > X > Z.

Chemistry of CobaltlotharmeyeriteHide

Mindat Formula:
CaCo2(AsO4)2 · 2H2O

Co may be replaced by minor Fe3+.

Crystallography of CobaltlotharmeyeriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.024(1) Å, b = 6.230(1) Å, c = 7.421(1) Å
β = 115.15(1)°
Ratio:
a:b:c = 1.448 : 1 : 1.191
Unit Cell V:
377.65 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Tabular on {101}, elongate parallel to [010], and showing a lance-like termination at an angle of ~80°.
Comment:
Data for type material.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014902CobaltlotharmeyeriteKrause W, Effenberger H, Bernhardt H J, Martin M (1999) Cobaltlotharmeyerite, Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2, a new mineral from Schneeberg, Germany Neues Jahrbuch fur Mineralogie, Monatshefte 1999 505-5171999Schneeberg, Saxony, Germany0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.955 Å(66)
3.398 Å(54)
3.188 Å(85)
3.115 Å(51)
2.972 Å(82)
2.828 Å(88)
2.545 Å(100)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of CobaltlotharmeyeriteHide

General Appearance of Type Material:
Fan-shaped aggregates and crusts on quartz. Thin-tabular, bladed crystals to 0.1 mm, elongated on [010].
Place of Conservation of Type Material:
Technische Universität, Bergakademie Freiberg, Freiberg, Germany.
Associated Minerals at Type Locality:
Reference:
Krause, W., Effenberger, H., Bernhardt, H.-J. and Martin, M. (1999) Cobaltlotharmeyerite, Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2, a new mineral. Neues Jahrbuch für Mineralogie, Monatshefte: 1999: 505-517.

Synonyms of CobaltlotharmeyeriteHide

Other Language Names for CobaltlotharmeyeriteHide

Varieties of CobaltlotharmeyeriteHide

Relationship of Cobaltlotharmeyerite to other SpeciesHide

Other Members of this group:
AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
CobalttsumcoritePbCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2OMon. 2/m : B2/m
GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
HelmutwinkleritePbZn2(AsO4)2 · 2H2OTric. 1 : P1
KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
LotharmeyeriteCaZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
LukrahniteCaCuFe3+(AsO4)2(OH,H2O)2Tric. 1 : P1
ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MawbyitePbFe3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
NickellotharmeyeriteCaNi2(AsO4)2 · 2H2OMon. 2/m : B2/m
NickelschneebergiteBiNi2(AsO4)2(OH) · H2OMon. 2/m : B2/m
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric. 1 : P1
RappolditePbCo2(AsO4)2 · 2H2OTric. 1 : P1
SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
45 photos of Cobaltlotharmeyerite associated with CobaltaustiniteCaCo(AsO4)(OH)
24 photos of Cobaltlotharmeyerite associated with DolomiteCaMg(CO3)2
21 photos of Cobaltlotharmeyerite associated with RoseliteCa2Co(AsO4)2 · 2H2O
8 photos of Cobaltlotharmeyerite associated with QuartzSiO2
7 photos of Cobaltlotharmeyerite associated with SpherocobaltiteCoCO3
6 photos of Cobaltlotharmeyerite associated with Cobalt-bearing AustiniteCa(Zn,Co)AsO4(OH)
6 photos of Cobaltlotharmeyerite associated with ErythriteCo3(AsO4)2 · 8H2O
6 photos of Cobaltlotharmeyerite associated with WendwilsoniteCa2Mg(AsO4)2 · 2H2O
5 photos of Cobaltlotharmeyerite associated with Talmessite-Anorthoroselite Series
5 photos of Cobaltlotharmeyerite associated with TalmessiteCa2Mg(AsO4)2 · 2H2O

Related Minerals - Strunz-mindat GroupingHide

8.CG.Ca-HuréauliteCaMn5(PO4)4 · 4H2O
8.CG.FluckiteCaMn2+(AsO3OH)2 · 2H2OTric. 1 : P1
8.CG.DondoelliteCa2Fe(PO4)2 · 2H2OTric. 1 : P1
8.CG.AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.05CassidyiteCa2Ni(PO4)2 · 2H2OTric.
8.CG.05CollinsiteCa2Mg(PO4)2 · 2H2OTric. 1 : P1
8.CG.05FairfielditeCa2Mn2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05MesseliteCa2Fe2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05AnorthoroseliteCa2Co(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05HilliteCa2Zn(PO4)2 · 2H2OTric. 1 : P1
8.CG.05Unnamed (Fe2+-analogue of Parabrandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.10BrandtiteCa2Mn2+(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2Co(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10Unnamed (Fe2+-analogue of Brandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.15FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15LotharmeyeriteCaZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15MawbyitePbFe3+2(AsO4)2(OH)2Mon. 2/m : B2/m
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. 2/m : B2/m
8.CG.15CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePbCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCaNi2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15NickelschneebergiteBiNi2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
8.CG.15NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
8.CG.15MagnesiofluckiteCaMg(AsO3OH)2(H2O)2Tric. 1 : P1
8.CG.20GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
8.CG.20HelmutwinkleritePbZn2(AsO4)2 · 2H2OTric. 1 : P1
8.CG.20ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.20RappolditePbCo2(AsO4)2 · 2H2OTric. 1 : P1
8.CG.20PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric. 1 : P1
8.CG.20LukrahniteCaCuFe3+(AsO4)2(OH,H2O)2Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4 · H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
8.CG.25Armellinoite-(Ce)Ca4Ce4+(AsO4)4 · H2OTet. 4/m : I41/a
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1
8.CG.55IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.

Fluorescence of CobaltlotharmeyeriteHide

Not fluorescent.

Other InformationHide

Notes:
Slowly soluble in warm HCl.
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 CobaltlotharmeyeriteHide

References for CobaltlotharmeyeriteHide

Localities for CobaltlotharmeyeriteHide

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 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Germany
 
  • Saxony
    • Erzgebirgskreis
      • Schneeberg
        • Neustädtel
Lapis 30 (7/8)
Effenberger et al. (2000) +1 other reference
Th. Witzke collection
          • Wolfgangmaßen
            • Wolfgangmaßen mines (Wolfgangmaaßen mines)
Lapis 30 (7/8)
      • Zschorlau
W. Krause et al.: N. Jb. Mineral. Mh. ...
Morocco
 
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
          • Aghbar
Favreau et al. (2006)
Favreau et al. (2006)
          • Aït Ahmane
Favreau et al. (2006)
Favreau et al. (2006)
Spain
 
  • Andalusia
    • Córdoba
      • Belalcázar
        • La Ventosilla farmhouse
Rewitzer et al. (2018)
      • Cardeña
        • Azuel
Calvo Rebollar et al. (2022)
 
Mineral and/or Locality  
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