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Lotharmeyerite

A valid IMA mineral species
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04731260017026731785379.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
03036480017026732191635.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
06796010015009228207490.jpg
Lotharmeyerite

Jean Baptiste Mine, Kamariza Mines, Agios Konstantinos, Lavrion mining district, Lavreotiki, East Attica, Attica, Greece
08796750017026731763779.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
04128570017026731774339.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
00096630014957720451346.jpg
Lotharmeyerite

Jean Baptiste Mine, Kamariza Mines, Agios Konstantinos, Lavrion mining district, Lavreotiki, East Attica, Attica, Greece
04731260017026731785379.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
04128570017026731774339.jpg
Lotharmeyerite

Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
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About LotharmeyeriteHide

06211090014947214812035.jpg
Julius Lothar Meyer
Formula:
CaZn2(AsO4)2 · 2H2O
Zn may be replaced by minor Mn3+.
Colour:
Dark red, dark orange-brown
Lustre:
Sub-Vitreous
Hardness:
3
Specific Gravity:
4.23
Crystal System:
Monoclinic
Name:
Named by Pete J. Dunn in 1983 in honor of Julius Lothar Meyer (19 August 1830 Varel, Germany - 11 April 1895, Tübingen, Germany), a chemist who developed early concepts for the periodic table of elements.
Isostructural with:
Tsumcorite
The ideal formula is identical to those of gaitite and zincroselite, but some Mn(III) seems to be necessary for stabilisation.

Chemically very similar to stergiouite (which has more water).
Visually indistinguishable from manganlotharmeyerite. Also very similar to cobaltlotharmeyerite.




Unique IdentifiersHide

Mindat ID:
2439
Long-form identifier:
mindat:1:1:2439:2
GUID
(UUID V4):
2f437ce5-ab99-47d3-8775-bd9da955dab1

IMA Classification of LotharmeyeriteHide

Classification of LotharmeyeriteHide

Strunz-mindat (2024):
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
Dana 7th ed.:
40.2.11.1
Dana 8th ed.:
37.1.6.1

37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
Hey's CIM Ref.:
20.3.18

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg

Mineral SymbolsHide

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

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

Physical Properties of LotharmeyeriteHide

Lustre:
Sub-Vitreous
Transparency:
Translucent
Colour:
Dark red, dark orange-brown
Streak:
Pale orange to yellow-orange
Hardness:
3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {001}
Fracture:
Irregular/Uneven
Density:
4.23(5) g/cm3 (Measured)    4.29(4) g/cm3 (Calculated)

Optical Data of LotharmeyeriteHide

Type:
Biaxial (+)
RI values:
nα = 1.797 nβ = 1.804 nγ = 1.815
2V:
Measured: 80° , Calculated: 78°
Birefringence:
0.018
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r >> v strong, inclined
Optical Extinction:
Inclined
Pleochroism:
Strong
Comments:
X=Y= yellow-orange
Z= red-brown
Comments:
Also given as "dark red orange to light pink-orange"

Chemistry of LotharmeyeriteHide

Mindat Formula:
CaZn2(AsO4)2 · 2H2O

Zn may be replaced by minor Mn3+.
Elements listed:
As, Ca, H, O, Zn - search for minerals with similar chemistry
Common Impurities:
Mn

Crystallography of LotharmeyeriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.066(4) Å, b = 6.276(2) Å, c = 7.408(2) Å
β = 116.16°
Ratio:
a:b:c = 1.445 : 1 : 1.18
Unit Cell V:
378.33 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Equant to tapering bladelike crystals to 6mm.
Twinning:
Probable about [h0l]
Comment:
MR (1984) 15:223

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018604LotharmeyeriteYang Y W, Evans S H, Downs R T, Yang H (2012) Lotharmeyerite, Ca(Zn,Mn)2(AsO4)2(H2O,OH)2 Acta Crystallographica E68 i9-i102012Mapimi, Durango, Mexico0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.94 Å(80)
3.41 Å(90)
3.18 Å(90)
2.91 Å(90)
2.82 Å(80)
2.71 Å(80)
2.56 Å(100)
1.687 Å(80)
Comments:
ICDD 35-620

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]
Geological Setting:
Oxidation zone of arsenic containing polymetallic ore deposits.

Type Occurrence of LotharmeyeriteHide

Type Locality:
ⓘ Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 149482.
Geological Setting of Type Material:
Oxidized zones of arsenic-bearing deposits.
Associated Minerals at Type Locality:
CryptomelaneAdamite
Reference:
Dunn, P.J. (1983) Lotharmeyerite, a new mineral from Mapimi, Durango, Mexico. The Mineralogical Record: 14: 35-36.

Other Language Names for LotharmeyeriteHide

Relationship of Lotharmeyerite to other SpeciesHide

Member of:
Tsumcorite Group
Other Members of this group:
AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
CobaltlotharmeyeriteCaCo2(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
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:
8 photos of Lotharmeyerite associated with CryptomelaneK(Mn4+7Mn3+)O16
7 photos of Lotharmeyerite associated with Manganese-bearing Adamite(Zn,Mn)2(AsO4)(OH)
2 photos of Lotharmeyerite associated with AdamiteZn2(AsO4)(OH)

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.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.15CobaltlotharmeyeriteCaCo2(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 LotharmeyeriteHide

In UV light:
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.

Internet Links for LotharmeyeriteHide

References for LotharmeyeriteHide

Reference List:
Dunn, P.J. (1983) Lotharmeyerite, a new mineral from Mapimi, Durango, Mexico. The Mineralogical Record, 14(1), 35-36.
Dunn, P. J., Cabri, L. J., Clark, A. M., Fleischer, M. (1983) New mineral names. American Mineralogist, 68. 849-852
Dunn, P.J. (1983) Lotharmeyerite, a new mineral from Mapimi, Durango, Mexico. The Mineralogical Record: 14: 35-36.
Kampf, A.R., Shigley, J.E., and Rossman, G.R. (1984) New data on lotharmeyerite. The Mineralogical Record, 15, 223-226.
Dunn, Pete J., Ferraiolo, James A., Fleischer, Michael, Gobel, Volker, Grice, Joel D., Langley, Richard H., Shigley, James E., Vanko, David A., Zilczer, Janet A. (1985) New mineral names. American Mineralogist, 70 (11-12) 1329-1335
Jambor, John L., Grew, Edward S., Roberts, Andrew C. (1998) New mineral names. American Mineralogist, 83. 1347-1352
Brugger, J., Krivovichev, S. V., Kolitsch, U., Meisser, N., Andrut, M., Ansermet, S., Burns, P. C. (2002) Description and crystal structure of manganlotharmeyerite, Ca[Mn3+,◻,Mg]2{AsO4,[AsO2(OH)2]}2(OH,H2O)2 from the Starlera Mn deposit, Swiss Alps, and a redefinition of lotharmeyerite. The Canadian Mineralogist, 40 (6) 1597-1608 doi:10.2113/gscanmin.40.6.1597
Yang, Yongbo W., Evans, Stanley H., Downs, Robert T., Yang, Hexiong (2012) Lotharmeyerite, Ca(Zn,Mn)2(AsO4)2(H2O,OH)2. Acta Crystallographica Section E Structure Reports Online, 68 (1) 9-10 doi:10.1107/s1600536811054286
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K., Blaß, G., and Gröbner, J. (2014) Neufunde aus dem alten Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt, 1, 60-75.
(2023) Lotharmeyerite. Handbook of Mineralogy. Mineralogical Society of America

Localities for LotharmeyeriteHide

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.
Chile
 
  • Atacama
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
Kampf et al. (2015)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
58. +1 other reference
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Kolitsch et al. (2014)
Mexico (TL)
 
  • Durango
    • Mapimí Municipality
      • Mapimí
Dunn (1983)
Thomas P. Moore (2008)
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