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Cobalttsumcorite Mineral Data

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General Cobalttsumcorite Information

Help on Chemical  Formula: Chemical Formula: Pb(Co,Fe)2(AsO4)2(OH,H2O)2
Help on Composition: Composition: Molecular Weight = 607.66 gm
   Iron       6.43 %  Fe    8.28 % FeO
   Cobalt     7.76 %  Co   10.92 % Co2O3
   Nickel     3.86 %  Ni    4.92 % NiO
   Arsenic   24.66 %  As   37.82 % As2O5
   Hydrogen   0.53 %  H     4.74 % H2O
   Lead      30.69 %  Pb   33.06 % PbO
   Oxygen    26.07 %  O
            ______        ______ 
            100.00 %       99.74 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.9Co0.8Fe2+0.7Ni0.4(AsO4)2(OH)0.6(H2O)1.3
Help on Environment: Environment: Secondary mineral found in dump material from an oxidation zone.
Help on IMA Status: IMA Status: Approved IMA 1999 (Dana # Added)
Help on Locality: Locality: "Am Roten Berg" mining area, 4.8 km SW of Schneeberg, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the chemical and structural relationship to tsumcorite
Help on Synonym: Synonym: IMA1999-029
 

Cobalttsumcorite Image

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  Cobalttsumcorite

Comments: Brown crystals of cobalttsumcorite.
Location: Rappold Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Cobalttsumcorite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.4409:1:1.1967
Help on Cell Dimensions: Cell Dimensions: a = 9.097, b = 6.313, c = 7.555, Z = 2; beta = 115.08° V = 392.97 Den(Calc)= 5.14
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.243(1)(112), 4.462(0.96)(201), 4.656(0.87)(111),3.01(0.58)(201), 2.868(0.5)(021), 2.733(0.47)(311), 2.55(0.4),
 

Physical Properties of Cobalttsumcorite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Brown, Reddish brown.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Rosette - Bundled tabular aggregates resembling rose flower petals.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Subadamantine
Help on Streak: Streak: light brown
 

Optical Properties of Cobalttsumcorite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.015 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1842,KC= 0.1815
Ncalc = 1.93
Help on Optical Data: Optical Data: Biaxial (+), a=1.92, b=1.94, g=1.98, bire=0.0600
 

Calculated Properties of Cobalttsumcorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.62 gm/cc
note: Specific Gravity of Cobalttsumcorite =5.14 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PECobalttsumcorite = 548.25 barns/electron
U=PECobalttsumcorite x rElectron Density=2,533.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cobalttsumcorite is Not Radioactive
 

Cobalttsumcorite Classification

Help on  Dana Class: Dana Class: 40.02.09.08 (40)Hydrated Phosphates, etc
  (40.02)where A++ (B++)2 (XO4) � x(H2O)
  (40.02.09)Helmutwinklerite Subgroup
 
40.02.09.01 Tsumcorite PbZnFe(AsO4)2•(H2O) C 2/m 2/m
 
40.02.09.02 Helmutwinklerite PbZn2(AsO4)2•2(H2O) P1 1
 
40.02.09.03 Thometzekite Pb(Cu,Zn)2(AsO4)2•2(H2O) C 2/m 2/m
 
40.02.09.04 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.05 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2•2(H2O) P1 1
 
40.02.09.06 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.07 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
 
40.02.09.08 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Help on  Strunz Class: 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 Cobalttsumcorite Information

Help on References: References: NAME( AmMin, vol 87, p 996) PHYS. PROP.(AmMin, vol 87, p 996) OPTIC PROP.(AmMin, vol 87, p 996)
Help on See Also: See Also: Links to other databases for Cobalttsumcorite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Cobalttsumcorite Specimen Label here :

Cobalttsumcorite

Pb(Co,Fe)2(AsO4)2(OH,H2O)2
Dana No: 40.02.09.08 Strunz No: 08.CG.15
Locality:

 

Notes:

 

 
   
 


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