Niedermayrite Mineral Data

Niedermayrite Mineral Data +

General Niedermayrite Information

Chemical Formula:

Cu4Cd(SO4)2(OH)6·4(H2O)

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

Empirical Formula:

Cu₄Cd(SO₄)₂(OH)₆·4(H₂O)

Environment:

In brecciated marble. The cadmium dominant analogue of campigliaite.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

An abandoned adit in the Km3 area, Lavrion mining district, Attica peninsula, Greece. Link to MinDat.org Location Data.

Name Origin:

Named after Gerhard Niedermayr (b. 1941), mineralogist and geologist, Naturhistorisches Museum, Vienna, Austria, compiler of the regional mineralogy of the eastern Alps.

Synonym:

IMA1997-024

Search for Niedermayrite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Niedermayrite Crystallography

Axial Ratios:

a:b:c =0.252:1:0.2763

Cell Dimensions:

a = 5.543, b = 21.995, c = 6.079, Z = 2; beta = 92.033° V = 740.67 Den(Calc)= 3.29

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 5.496(1), 11.02(0.9), 4.079(0.5),

Physical Properties of Niedermayrite

Cleavage:

[010] Perfect

Color:

Bluish green.

Density:

3.36

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Niedermayrite

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

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

Electron Density:

r_electron=3.18 gm/cc
note: r_{Niedermayrite}=3.29 gm/cc.

Fermion Index

Fermion Index = 0.03924
Boson Index = 0.96076

Photoelectric:

PE_{Niedermayrite}= 53.99 barns/electron
U=PE_{Niedermayrite} x r_electron= 171.60 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Niedermayrite is Not Radioactive

Niedermayrite Classification

Dana Class:

31.6.6.2 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.6)where (A+ B++)5 (XO4)2 Zq·x(H2O)

(31.6.6)Dana Group

31.6.6.1 Campigliaite Cu4Mn(SO4)2(OH)6·4(H2O) C 2 2

31.6.6.2 Niedermayrite ! Cu4Cd(SO4)2(OH)6·4(H2O) P 2₁/m 2/m

Strunz Class:

VI/D.19-05 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. Cations of medium and very big size

VI/D.19 - Devilline - Serperite - Rapidcreekite series

VI/D.19-05 Niedermayrite Cu4Cd(SO4)2(OH)6·4(H2O) P 2₁/m 2/m

VI/D.19-10 Devilline CaCu4(SO4)2(OH)6·3(H2O) P 2₁/c 2/m

VI/D.19-20 Serpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) C 2/c 2/m

VI/D.19-30 Orthoserpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) P ca2₁ mm2

VI/D.19-32 Lautenthalite PbCu4(OH)6(SO4)2·3(H2O) P 2₁/c 2/m

VI/D.19-35 Arzrunite Cu4Pb2SO4(OH)4Cl6·2(H2O) Unk Ortho

VI/D.19-40 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7(H2O) Unk Ortho

VI/D.19-50 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m

Other Niedermayrite Information

References:

NAME( MinRec) PHYS. PROP.(Eur. J. Min.,Vol.10,1998) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Niedermayrite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

Search for Niedermayrite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Niedermayrite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Niedermayrite Mineral Data :

Ask about Niedermayrite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Niedermayrite

Cu4Cd(SO4)2(OH)6·4(H2O)
Dana No: 31.6.6.2 Strunz No: VI/D.19-05
Locality:

Notes: