Ferrilotharmeyerite Mineral Data

John Betts Fine Minerals

General Ferrilotharmeyerite Information

Help on Chemical  Formula: Chemical Formula: Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2
Help on Composition: Composition: Molecular Weight = 490.79 gm
   Calcium    7.35 %  Ca   10.28 % CaO
   Zinc      10.66 %  Zn   13.27 % ZnO
   Iron      10.24 %  Fe   14.64 % Fe2O3
   Copper     3.88 %  Cu    4.37 % Cu2O
   Arsenic   30.53 %  As   46.83 % As2O5
   Hydrogen   0.51 %  H     4.59 % H2O
   Lead       4.22 %  Pb    4.55 % PbO
   Oxygen    32.60 %  O
            ______        ______ 
            100.00 %       98.53 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.9Pb0.1Fe3+0.9Zn0.8Cu0.3(AsO4)2(OH)1.5(H2O)0.5
Help on Environment: Environment: On museum specimens from a dolostone-hosted hydrothermal polymetallic ore deposit.
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: As the ferric iron analog of lotharmeyerite
Help on Synonym: Synonym: ICSD 76614
  IMA1986-024
  PDF 45-1390
 

Ferrilotharmeyerite Image

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Ferrilotharmeyerite

Comments: Brown crystalline aggregates of ferrilotharmeyerite on quartz.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrilotharmeyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4437:1:1.1841
Help on Cell Dimensions: Cell Dimensions: a = 9.006, b = 6.238, c = 7.387, Z = 2; beta = 115.54° V = 374.45 Den(Calc)= 4.35
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): 2.938(1), 3.175(1), 3.398(1),
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Krause W , Belendorff K , Bernhardt H J , McCammon C A , Effenberger H , Mikenda W , European Journal of Mineralogy , 10 (1998) p.179-206, Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite,, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite

 

Physical Properties of Ferrilotharmeyerite

Help on Cleavage: Cleavage: [001] Good
Help on Color: Color: Brownish yellow, Yellow brown.
Help on Density: Density: 4.25
Help on Diaphaniety: Diaphaniety: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Habit: Habit: Wedge shaped - Crystals shaped like a wedge.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Adamantine - Greasy
Help on Streak: Streak: light yellow
 

Optical Properties of Ferrilotharmeyerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1943,KPDmeas= 0.1988,KC= 0.1964
Help on Optical Data: Optical Data: Biaxial (+), a=1.83, b=1.835, g=1.87, bire=0.0400, 2V(Calc)=44, 2V(Meas)=40. Dispersion r > v distinct.
Help on Pleochroism (x): Pleochroism (x): olive green or orange.
Help on Pleochroism (y): Pleochroism (y): pale green or yellow.
Help on Pleochroism (z): Pleochroism (z): colorless or colorless.
 

Calculated Properties of Ferrilotharmeyerite

Help on Electron Density: Electron Density:

relectron=4.09 gm/cc
note: rFerrilotharmeyerite =4.35 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01612
Boson Index = 0.98388
Help on Photoelectric: Photoelectric:

PEFerrilotharmeyerite = 101.22 barns/electron
U=PEFerrilotharmeyerite x relectron= 414.12 barns/cc.

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

Ferrilotharmeyerite is Not Radioactive

 

Ferrilotharmeyerite Classification

Help on  Dana Class: Dana Class: 37.1.6.2 (37)Anhydrous Acid Phosphates, etc
  (37.1)with miscellaneous formulae
  (37.1.6)Dana Group
 
37.1.6.1 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
 
37.1.6.2 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
 
37.1.6.3 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
37.1.6.4 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: VII/C.31-10 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 Ferrilotharmeyerite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(AntBidBlaNic4)
Help on See Also: See Also: Links to other databases for Ferrilotharmeyerite :
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 11 - WWW-MINCRYST 12 -École des Mines de Paris

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Ferrilotharmeyerite

Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2
Dana No: 37.1.6.2 Strunz No: VII/C.31-10
Locality:

 

Notes:

 

 
   
 
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