Lotharmeyerite Mineral Data (original) (raw)
General Lotharmeyerite Information
Chemical Formula:
CaZnMn+++(AsO3OH)4(OH)3
Composition:
Molecular Weight = 491.28 gm
Calcium 8.16 % Ca 11.41 % CaO
Manganese 11.18 % Mn 16.07 % Mn2O3
Zinc 13.31 % Zn 16.57 % ZnO
Arsenic 30.50 % As 46.78 % As2O5
Hydrogen 1.03 % H 9.17 % H2O
Oxygen 35.82 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
CaZnMn3+(AsO3OH)2(OH)3
IMA Status:
Approved IMA 1983
Locality:
Ojuela mine, Mapimi, DGO, Mexico. Link to MinDat.org Location Data.
Name Origin:
Named for Julius Lothar Meyer (1830-1895), German chemist who developed concepts for the periodic table.
Name Pronunciation:
Lotharmeyerite + Pronunciation 
Lotharmeyerite Image
Images:
Lotharmeyerite Crystallography
Axial Ratios:
a:b:c =1.4445:1:1.1803
Cell Dimensions:
a = 9.066, b = 6.276, c = 7.408, Z = 2; beta = 116.16° V = 378.33 Den(Calc)= 4.31
Crystal System:
MonoclinicSpace Group: C 2/m,C 2,Cm
X Ray Diffraction:
By Intensity(I/Io): 2.557(1), 3.175(0.9), 3.414(0.9),
Physical Properties of Lotharmeyerite
Color:
Dark reddish orange, Reddish brown, Red orange.
Density:
4.23
Diaphaneity:
Transparent to Translucent
Habit:
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Hardness:
3 - Calcite
Luster:
Vitreous (Glassy)
Streak:
orange
Optical Properties of Lotharmeyerite
Gladstone-Dale:
CI meas= 0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.091 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1869,KPDmeas= 0.1904,KC= 0.2055
Ncalc = 1.87 - 1.89
Optical Data:
Biaxial (+), a=1.797, b=1.804, g=1.815, bire=0.0180, 2V(Calc)=78, 2V(Meas)=80.
Pleochroism (x):
dark red orange.
Pleochroism (y):
red orange.
Pleochroism (z):
light pink orange.
Calculated Properties of Lotharmeyerite
Electron Density:
Bulk Density (Electron Density)=4.03 gm/cc
note: Specific Gravity of Lotharmeyerite =4.23 gm/cc.
Fermion Index:
Fermion Index = 0.0057407478
Boson Index = 0.9942592522
Photoelectric:
PELotharmeyerite = 31.39 barns/electron
U=PELotharmeyerite x rElectron Density= 126.48 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lotharmeyerite is Not Radioactive
Lotharmeyerite Classification
Dana Class:
37.01.06.01 (37)Anhydrous Acid Phosphates, etc
(37.01)with miscellaneous formulae
(37.01.06)Lotharmeyerite Series
37.01.06.01 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
37.01.06.02 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
37.01.06.03 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
37.01.06.04 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Strunz Class:
08.CG.15 08 - PHOSPHATES, ARSENATES, VANADATES
08.C - Phosphates without Additional Anions, with H2O
08.CG -With large and medium-sized cations, RO4:H2O = 1:1
08.CG.15 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m
08.CG.15 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
08.CG.15 Mounanaite PbFe2(VO4)2(OH)2 P1 1
08.CG.15 Tsumcorite PbZnFe(AsO4)2•(H2O) C 2/m 2/m
08.CG.15 Thometzekite Pb(Cu,Zn)2(AsO4)2•2(H2O) C 2/m 2/m
08.CG.15 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m
08.CG.15 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
08.CG.15 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Other Lotharmeyerite Information
References:
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Lotharmeyerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
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Lotharmeyerite
CaZnMn+++(AsO3OH)4(OH)3
Dana No: 37.01.06.01 Strunz No: 08.CG.15
Locality:
Notes: