Manganlotharmeyerite Mineral Data

General Manganlotharmeyerite Information

Help on Chemical  Formula: Chemical Formula: Ca(Mn+++,Mg,)2(AsO4)2(OH,H2O)2
Help on Composition: Composition: Molecular Weight = 414.80 gm
   Calcium     8.70 %  Ca   12.17 % CaO
   Magnesium   2.34 %  Mg    3.89 % MgO
   Manganese  13.24 %  Mn   19.03 % Mn2O3
   Arsenic    36.12 %  As   55.41 % As2O5
   Hydrogen    1.02 %  H     9.12 % H2O
   Oxygen     38.57 %  O
             ______        ______ 
             100.00 %       99.61 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.92(Mn3+0.5)2(Mg0.2)2(As)O10H4.2
Help on Environment: Environment: In carbonate-hosted manganese ore.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Starlera Fe-Mn deposit, Val Ferrera, Eastern Alps, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Mn-dominant lotharmeyerite.
Help on Synonym: Synonym: IMA2001-026
 

Manganlotharmeyerite Image

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Manganlotharmeyerite

Comments: Scanning electron micrograph of subparallel crystals of manganlotharmeyerite.
Location: Massive braunite ores at the Starlera Mn deposit in the Eastern Alps of Switzerland. Scale: See Picture.
© Canadian Mineralogist

Manganlotharmeyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4511:1:1.1857
Help on Cell Dimensions: Cell Dimensions: a = 9.043, b = 6.2314, c = 7.3889, Z = 2; beta = 116.392° V = 372.97 Den(Calc)= 3.69
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.555(1)(221,312), 3.182(1)(112), 2.718(0.8)(311),4.93(0.8)(110), 2.134(0.7)(202,221), 2.822(0.7)(021), 2.927(0.7)(201),
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Brugger J , Krivovichev S V , Kolitsch U , Meisser N , Andrut M , Ansermet S , Burns P C , The Canadian Mineralogist , 40 (2002) p.1597-1608, Description and crystal structure of manganlotharmeyerite,

 

Physical Properties of Manganlotharmeyerite

Help on Cleavage: Cleavage: [001] Distinct
Help on Color: Color: Brownish red, Dark reddish orange.
Help on Density: Density: 3.77
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: light brown
 

Optical Properties of Manganlotharmeyerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2216,KPDmeas= 0.2169,KC= 0.2114
Help on Optical Data: Optical Data: Biaxial (+), a=1.785, b=1.814, g=1.854, bire=0.0690, 2V(Calc)=84, 2V(Meas)=~85. Dispersion r < v weak.
 

Calculated Properties of Manganlotharmeyerite

Help on Electron Density: Electron Density:

relectron=3.60 gm/cc
note: rManganlotharmeyerite =3.77 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00264
Boson Index = 0.99736
Help on Photoelectric: Photoelectric:

PEManganlotharmeyerite = 29.13 barns/electron
U=PEManganlotharmeyerite x relectron= 104.84 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Manganlotharmeyerite is Not Radioactive

 

Manganlotharmeyerite Classification

Help on  Dana Class: Dana Class: 40.2.3.5 (40)Hydrated Phosphates, etc
  (40.2)where A++ (B++)2 (XO4) · x(H2O)
  (40.2.3)Roselite Subgroup (Monoclinic: P21/c)
 
40.2.3.1 Roselite Ca2(Co,Mg)(AsO4)2·2(H2O) P 21/c 2/m
 
40.2.3.2 Brandtite Ca2(Mn,Mg)(AsO4)2·2(H2O) P 21/c 2/m
 
40.2.3.3 Zincroselite Ca2Zn(AsO4)2·2(H2O) P 21/c 2/m
 
40.2.3.4 Wendwilsonite Ca2(Mg,Co)(AsO4)2·2(H2O) P 21/c 2/m
 
40.2.3.5 Manganlotharmeyerite ! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: VII/C.31-30 VII - Phosphates, Arsenates and Vanadates
  VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+
  VII/C.31 - Mawbyite - Gartrellite series
 
VII/C.31-02 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-04 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-05 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-06 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m
 
VII/C.31-08 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-10 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-20 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
 
VII/C.31-30 Manganlotharmeyerite Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-35 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-36 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
VII/C.31-40 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m
 
VII/C.31-50 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m
 
VII/C.31-74 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m
 
VII/C.31-78 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1
 
VII/C.31-80 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1
 
VII/C.31-90 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri
 
VII/C.31-92 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1
 
VII/C.31-98 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1
 
VII/C.31-100 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1
 

Other Manganlotharmeyerite Information

Help on References: References: NAME( CanMin, v 41, p 818) PHYS. PROP.(CanMin, v 41, p 818) OPTIC PROP.(CanMin, v 41, p 818)
Help on See Also: See Also: Links to other databases for Manganlotharmeyerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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Manganlotharmeyerite

Ca(Mn+++,Mg,)2(AsO4)2(OH,H2O)2
Dana No: 40.2.3.5 Strunz No: VII/C.31-30
Locality:

 

Notes:

 

 
   
 
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