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Lotharmeyerite

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Julius Lothar Meyer
Formula:
Ca(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
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), chemist who developed early concepts for the periodic table of elements.
Isostructural with:
Visually indistinguishable from manganlotharmeyerite. Also very similar to cobaltlotharmeyerite.


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Classification of LotharmeyeriteHide

Approved
Approval Year:
1985
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
37.1.6.1

37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
20.3.18

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

Physical Properties of LotharmeyeriteHide

Sub-Vitreous
Transparency:
Translucent
Colour:
Dark red, dark orange-brown
Streak:
Pale orange to yellow-orange
Hardness:
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"

Chemical Properties of LotharmeyeriteHide

Formula:
Ca(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
IMA Formula:
CaZn2(AsO4)2 · 2H2O

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

X-Ray Powder DiffractionHide

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

Type Occurrence of LotharmeyeriteHide

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:
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

Other Members of this group:
CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon.
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
Cryptomelane4 photos of Lotharmeyerite associated with Cryptomelane on mindat.org.
Manganoan Adamite3 photos of Lotharmeyerite associated with Manganoan Adamite on mindat.org.
Adamite2 photos of Lotharmeyerite associated with Adamite 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.10RoseliteCa2(Co2+,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.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.15ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Mon. 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

37.1.6.2FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.3.1AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
20.3.2ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
20.3.3KoritnigiteZn(HAsO4) · H2OTric. 1 : P1
20.3.4LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
20.3.5WarikahniteZn3(AsO4)2 · 2H2OTric.
20.3.6KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.3.7StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
20.3.8Philipsburgite(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2OMon.
20.3.9AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.3.10ProsperiteCa2Zn4(AsO4)4•H2O · Mon.
20.3.11GaititeCa2Zn(AsO4)2 · 2H2OTric.
20.3.12ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
20.3.13O'DanieliteNa(Zn,Mg)3H2(AsO4)3Mon. 2/m : B2/b
20.3.14JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
20.3.15Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm (2/m 2/m 2/m) : Ccca
20.3.16Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
20.3.17Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
20.3.19Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1
20.3.20OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon.
20.3.21FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
20.3.22KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m

Fluorescence of LotharmeyeriteHide

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.

References for LotharmeyeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dunn, P.J. (1983) Lotharmeyerite, a new mineral from Mapimi, Durango, Mexico. The Mineralogical Record: 14: 35-36.
Dunn, P.J., Cabri, L.J., Clark, A.M., Fleischer, M. (1983) New mineral names. American Mineralogist: 68: 849-852.
Kampf, A.R., Shigley, J.E., Rossman, G.R. (1984) New data on lotharmeyerite. The Mineralogical Record: 15: 223-226.
Dunn, P.J., Ferraiolo, J.A., Fleischer, M., Gobel, V., Grice, J.D., Langley, R.H., Shigley, J.E., Vanko, D.A., Zilczer, J.A. (1985) New mineral names. American Mineralogist: 70: 1329-1335.
Jambor, J.L., Grew, E.S., Roberts, A.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[Mn 3+, ◻,Mg]2{AsO4,[AsO2(OH)2]}2(OH,H2O)2 from the Starlera Mn deposit,Swiss Alps, and a redefinition of lotharmeyerite. Canadian Mineralogist: 40: 1597-1608.
Yang, 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-i10.
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K., Blaß, G., Gröbner, J. (2014) Neufunde aus dem alten Bergbau und den Schlacken von Lavrion (I). Mineralien Welt: 1: 60-75.

Internet Links for LotharmeyeriteHide

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 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.
Chile
 
  • Atacama Region
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
Kampf, A. R., Mills, S. J., Nash, B. P., Dini, M., & Molina Donoso, A. A. (2015). Tapiaite, Ca5Al2 (AsO4) 4 (OH) 4· 12H2O, a new mineral from the Jote mine, Tierra Amarilla, Chile. Mineralogical Magazine, 79(2), 345-354.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
KOLITSCH, U., GRÖBNER, J. BLASS, G., GRAF, H.-W. & PRING, A. (2005): Neufunde aus der Grube Clara im mittleren Schwarzwald (II): Dreyerit, Gasparit-(Ce), Klinobisvanit, Kobaltkoritnigit, Metatyuyamunit, Roscoelith, Sengierit, Vésigniéit und Wakefieldit. Lapis 30 (9), 35-39; 58.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Mexico (TL)
 
  • Durango
    • Mun. de Mapimí
      • Mapimí
Min.Rec.(1983) 14, 35-36
Thomas P. Moore (2008) Lapis, 33, #7-8, 33-40.
Mineral and/or Locality  
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