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Numanoite Mineral Data

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General Numanoite Information

Help on Chemical  Formula: Chemical Formula: Ca4CuB4O6(OH)6(CO3)2
Help on Composition: Composition: Molecular Weight = 573.17 gm
   Calcium    27.26 %  Ca   38.14 % CaO
   Magnesium   0.61 %  Mg    1.02 % MgO
   Zinc        0.41 %  Zn    0.51 % ZnO
   Copper      8.58 %  Cu    9.66 % Cu2O
   Boron       7.49 %  B    24.10 % B2O3
   Hydrogen    1.09 %  H     9.76 % H2O
   Carbon      4.31 %  C    15.81 % CO2
   Oxygen     50.25 %  O
             ______        ______ 
             100.00 %       99.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3.89Cu0.77Mg0.14Zn0.03B3.96O5.61(OH)6.2(CO3)2.05
Help on Environment: Environment: Occurs as 1 to 5 mm cores in crystals or veins of boracite in a skarn with cavities and veins in crystalline limestone. Cu-dominant analogue of borcarite.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Fuka mine, Fuka, Bitchu-cho, Takahashi City, Okayama Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Tadayuki Numano (1931-2001), Emeritus Professor of Okayama University.
Help on Synonym: Synonym: IMA2005-050

Numanoite Image

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  Numanoite   Borcarite

Comments: Zoned borcarite (Bc) crystal with a core of green numanoite (Nm). CanMin 45:307.
Location: Fuka mine, 40 km west-northwest of Okayama City, western Japan. Scale: See Image.
© Canadian Mineralogist

Numanoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.1231:1:0.5308
Help on Cell Dimensions: Cell Dimensions: a = 17.794, b = 8.381, c = 4.4494, Z = 2; beta = 102.42° V = 648.02 Den(Calc)= 2.94
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): 7.57(1)(110 ), 2.671(0.84)(421 ), 2.727(0.68)(221 ),1.887(0.52)(041,440), 2.272(0.48)(331 ), 2.899(0.44)(600 ), 1.698(0.34)(640 ), 2.201(0.28)(601 ),

Physical Properties of Numanoite

Help on Cleavage: Cleavage: {???} Perfect, {???} Perfect
Help on Color: Color: Colorless, Blue green.
Help on Density: Density: 2.96
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Inclusions - Generally found as inclusions in other minerals.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)

Optical Properties of Numanoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2209,KPDmeas= 0.2194,KC= 0.2239
Ncalc = 1.66
Help on Optical Data: Optical Data: Biaxial (-), a=1.618, b=1.658, g=1.672, bire=0.0540

Calculated Properties of Numanoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.93 gm/cc
note: Specific Gravity of Numanoite =2.94 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENumanoite = 7.35 barns/electron
U=PENumanoite x rElectron Density= 21.54 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Numanoite is Not Radioactive

Numanoite Classification

Help on  Dana Class: Dana Class: (27)Compound Borates
  (27.01)Dana Type
  (27.01.03)Dana Group Borcarite Ca4MgB4O6(OH)6(CO3)2 C 2/m 2/m Numanoite! Ca4CuB4O6(OH)6(CO3)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.DA.40 06 - BORATES
  06.D - Tetraborates
  06.DA -Neso-tetraborates
06.DA.40 Borcarite Ca4MgB4O6(OH)6(CO3)2 C 2/m 2/m
06.DA.40 Numanoite! Ca4CuB4O6(OH)6(CO3)2 C 2/m 2/m

Other Numanoite Information

Help on References: References: NAME( AmMin, v92:1778) PHYS. PROP.(AmMin, v92:1778) OPTIC PROP.(AmMin, v92:1778)
Help on See Also: See Also: Links to other databases for Numanoite :
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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Dana No: Strunz No: 06.DA.40





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