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Richelsdorfite Mineral Data

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General Richelsdorfite Information

Help on Chemical  Formula: Chemical Formula: Ca2Cu5Sb(AsO4)4Cl(OH)6•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,320.90 gm
   Calcium    6.07 %  Ca    8.49 % CaO
   Copper    24.05 %  Cu   27.08 % Cu2O
   Antimony   9.22 %  Sb   11.03 % Sb2O3
   Arsenic   22.69 %  As   34.80 % As2O5
   Hydrogen   1.37 %  H    12.27 % H2O
   Chlorine   2.68 %  Cl    2.68 % Cl
               -   %   Cl   -0.61 % -O=Cl2   
   Oxygen    33.91 %  O
            ______        ______ 
            100.00 %       95.76 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Cu5Sb(AsO4)4Cl(OH)6•6(H2O)
Help on Environment: Environment: Found in Permian-aged sandstone at the type locality.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Richelsdorf Mountains, Hesse, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Richelsdorfite + Pronunciation Say RICHELSDORFITE
Help on Synonym: Synonym: ICSD 62339
  PDF 46-1462

Richelsdorfite Image

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Comments: Greenish rounded aggregates of richelsdorfite on matrix.
Location: Wilhelm Mine; Wechselschacht, near Bauhaus, Richelsdorf District, Hesse, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Richelsdorfite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9909:1:0.9495
Help on Cell Dimensions: Cell Dimensions: a = 14.078, b = 14.207, c = 13.49, Z = 4; beta = 101.06° V = 2,647.97 Den(Calc)= 3.31
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): 13.29(1), 3.132(0.9), 2.776(0.35),

Physical Properties of Richelsdorfite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Sky blue, Turquoise.
Help on Density: Density: 3.2 - 3.3, Average = 3.25
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish blue

Optical Properties of Richelsdorfite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.204,KPDmeas= 0.2078,KC= 0.2102
Ncalc = 1.67 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.64, b=1.692, g=1.694, bire=0.0540, 2V(Calc)=20, 2V(Meas)=10-15.

Calculated Properties of Richelsdorfite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.09 gm/cc
note: Specific Gravity of Richelsdorfite =3.25 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0002467739
Boson Index = 0.9997532261
Help on Photoelectric: Photoelectric: PERichelsdorfite = 55.70 barns/electron
U=PERichelsdorfite x rElectron Density= 171.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Richelsdorfite is Not Radioactive

Richelsdorfite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.07)where (AB)5 (XO4)3 Zq � x(H2O)
  (42.07.15)Richelsdorfite Group Richelsdorfite Ca2Cu5Sb(AsO4)4Cl(OH)6•6(H2O) C 2/m 2/m Bleasdaleite! (Ca,Fe)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.DK.25 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DK -With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
08.DK.25 Richelsdorfite Ca2Cu5Sb(AsO4)4Cl(OH)6•6(H2O) C 2/m 2/m
08.DK.25 Bleasdaleite! (Ca,Fe)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13 C 2/m 2/m

Other Richelsdorfite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Richelsdorfite :
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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Dana No: Strunz No: 08.DK.25





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