Mineralogy Database

Nakauriite Mineral Data

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General Nakauriite Information

Help on Chemical  Formula: Chemical Formula: (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6•48(H2O)
Help on Composition: Composition: Molecular Weight = 1,870.41 gm
   Manganese  11.75 %  Mn   15.17 % MnO
   Copper      3.40 %  Cu    4.25 % CuO
   Nickel      9.41 %  Ni   11.98 % NiO
   Hydrogen    5.50 %  H    49.12 % H2O
   Carbon      0.64 %  C     2.35 % CO2
   Sulfur      6.86 %  S    17.12 % SO3
   Oxygen     62.44 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+4Ni3Cu(SO4)4(CO3)(OH)6•48(H2O)
Help on Environment: Environment: Veins cutting massive serpentinite.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Nakauri, Achi Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Nakauriite + Pronunciation Say NAKAURIITE

Nakauriite Image

Click Here for Larger   Image in a New Browser Window Images:
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Comments: Blue crystals of nakauriite on green serpentinite.
Location: Lobming, Styria, Austria. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Nakauriite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2715:1:1.4141
Help on Cell Dimensions: Cell Dimensions: a = 14.585, b = 11.47, c = 16.22, Z = 2; V = 2,713.44 Den(Calc)= 2.29
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.314(1), 3.652(0.2), 2.367(0.16),

Physical Properties of Nakauriite

Help on Color: Color: Sky blue, Light blue.
Help on Density: Density: 2.39
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.

Optical Properties of Nakauriite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2622,KPDmeas= 0.2512,KC= 0.2605
Ncalc = 1.6 - 1.62
Help on Optical Data: Optical Data: Biaxial (-), a=1.585, b=1.604, g=1.612, bire=0.0270, 2V(Calc)=64, 2V(Meas)=65.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): light greenish blue.
Help on Pleochroism (z): Pleochroism (z): pale sky blue.

Calculated Properties of Nakauriite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.37 gm/cc
note: Specific Gravity of Nakauriite =2.29 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0019566479
Boson Index = 0.9980433521
Help on Photoelectric: Photoelectric: PENakauriite = 8.30 barns/electron
U=PENakauriite x rElectron Density= 19.69 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nakauriite is Not Radioactive

Nakauriite Classification

Help on  Dana Class: Dana Class: (32)Compound Sulfates
  (32.04)(hydrous) with poly-anionic formula
  (32.04.01)Dana Group Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6•48(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 07.DG.30 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DG -With large and medium sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
07.DG.30 Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6•48(H2O) Unk Ortho

Other Nakauriite Information

Help on References: References: NAME( Dana8) 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 Nakauriite :
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: 07.DG.30





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