Lotharmeyerite Mineral Data
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 % Mn2 O3
Zinc 13.31 % Zn 16.57 % ZnO
Arsenic 30.50 % As 46.78 % As2 O5
Hydrogen 1.03 % H 9.17 % H2 O
Oxygen 35.82 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
CaZnMn3+ (AsO3 OH)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:
Monoclinic Space 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/electronU=PELotharmeyerite x r Electron 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
Search for Lotharmeyerite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Lotharmeyerite :
Ask about Lotharmeyerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espaņol
Print or Cut-and-Paste your Lotharmeyerite Specimen Label here :
Lotharmeyerite
CaZnMn+++(AsO3OH)4(OH)3
Dana No: 37.01.06.01 Strunz No: 08.CG.15
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.