Mineralogy Database

Niedermayrite Mineral Data

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General Niedermayrite Information

Help on Chemical  Formula: Chemical Formula: Cu4Cd(SO4)2(OH)6•4(H2O)
Help on Composition: Composition: Molecular Weight = 732.83 gm
   Cadmium   15.34 %  Cd   17.52 % CdO
   Copper    34.69 %  Cu   43.42 % CuO
   Hydrogen   1.93 %  H    17.21 % H2O
   Sulfur     8.75 %  S    21.85 % SO3
   Oxygen    39.30 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu4Cd(SO4)2(OH)6•4(H2O)
Help on Environment: Environment: In brecciated marble. The cadmium dominant analogue of campigliaite.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: An abandoned adit in the Km3 area, Lavrion mining district, Attica peninsula, Greece. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Gerhard Niedermayr (b. 1941), mineralogist and geologist, Naturhistorisches Museum, Vienna, Austria, compiler of the regional mineralogy of the eastern Alps.
Help on Name Pronunciation: Name Pronunciation: Niedermayrite + Pronunciation Say NIEDERMAYRITE
Help on Synonym: Synonym: IMA1997-024

Niedermayrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.252:1:0.2763
Help on Cell Dimensions: Cell Dimensions: a = 5.543, b = 21.995, c = 6.079, Z = 2; beta = 92.033° V = 740.67 Den(Calc)= 3.29
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.496(1), 11.02(0.9), 4.079(0.5),

Physical Properties of Niedermayrite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Bluish green.
Help on Density: Density: 3.36
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Niedermayrite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1937,KPDmeas= 0.1897,KC= 0.1938
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.599-1.619, b=1.642, g=1.661, bire=0.0420-0.0620, 2V(Calc)=64-82, 2V(Meas)=84. Dispersion r > v strong.

Calculated Properties of Niedermayrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.18 gm/cc
note: Specific Gravity of Niedermayrite =3.29 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PENiedermayrite = 53.99 barns/electron
U=PENiedermayrite x rElectron Density= 171.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Niedermayrite is Not Radioactive

Niedermayrite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.06)where (A+ B++)5 (XO4)2 Zq�x(H2O)
  (31.06.06)Dana Group Campigliaite Cu4Mn(SO4)2(OH)6•4(H2O) C 2 2 Niedermayrite! Cu4Cd(SO4)2(OH)6•4(H2O) P 21/m 2/m
Help on  Strunz Class: Strunz Class: 07.DD.30 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
07.DD.30 Campigliaite Cu4Mn(SO4)2(OH)6•4(H2O) C 2 2
07.DD.30 Devilline CaCu4(SO4)2(OH)6•3(H2O) P 21/c 2/m
07.DD.30 Orthoserpierite Ca(Cu,Zn)4(SO4)2(OH)6•3(H2O) P ca21 mm2
07.DD.30 Niedermayrite! Cu4Cd(SO4)2(OH)6•4(H2O) P 21/m 2/m
07.DD.30 Serpierite Ca(Cu,Zn)4(SO4)2(OH)6•3(H2O) C 2/c 2/m

Other Niedermayrite Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Eur. J. Min.,Vol.10,1998) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Niedermayrite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 07.DD.30





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