Kotoite Mineral Data

Kotoite Mineral Data
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General Kotoite Information

Help on Chemical Formula: Chemical Formula: Mg3B2O6
Help on Composition: Composition: Molecular Weight = 190.53 gm
   Magnesium  38.27 %  Mg   63.46 % MgO
   Boron      11.35 %  B    36.54 % B2O3
   Oxygen     50.38 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3B2O6
Help on Environment: Environment: Contact metamorphosed dolomite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1939
Help on Locality: Locality: Hol Kol mine, Suan, Korea. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Bundjiro Koto (1856-1935), Japanese geologist.
Help on Name Pronunciation: Name Pronunciation: Kotoite Say KOTOITE
Help on Synonym: Synonym: ICSD 31385
  PDF 381475
 

Kotoite Image

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Kotoite

Comments: White massive kotoite crystals.
Location: Baita Mine (Rézbánya), Nucet, Bihor Co., Romania. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Kotoite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6413:1:0.5343
Help on Cell Dimensions: Cell Dimensions: a = 5.398, b = 8.416, c = 4.497, Z = 2; V = 204.30 Den(Calc)= 3.10
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.18(1), 2.23(1), 2.67(1),
Click Here for Large Kotoite Structure Window Crystal Structure:

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Effenberger H , Pertlik F , Zeitschrift fur Kristallographie , 166 (1984) p.129-140, Verfeinerung der kristallstrukturen der isotypen verbindungen, M3(BO3)2 mit M=Mg, Co und Ni (strukturtyp: kotoit), Locality: synthetic

 

Physical Properties of Kotoite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 3.04
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Kotoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2127,KPDmeas= 0.2169,KC= 0.2055
Ncalc = 1.62 - 1.64
Help on Optical Data: Optical Data: Biaxial (+), a=1.652, b=1.653, g=1.673, bire=0.0210, 2V(Calc)=26, 2V(Meas)=21.
 

Calculated Properties of Kotoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.06 gm/cc
note: Specific Gravity of Kotoite =3.10 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEKotoite = 0.97 barns/electron
U=PEKotoite x rElectron Density= 2.97 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kotoite is Not Radioactive
 

Kotoite Classification
Help on Dana Class: Dana Class: 24.03.02.01 (24)Borates - Anhydrous
  (24.03)where (A)m (B)n [XO3]p
  (24.03.02)Dana Group
 
24.03.02.01 Kotoite Mg3B2O6 Pnmn 2/m 2/m 2/m
 
24.03.02.02 Jimboite Mn3B2O6 Pnmn,Pmmn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 06.AA.35 06 - BORATES
  06.A - Monoborates
  06.AA -BO3, without additional anions; 1(D)
 
06.AA.35 Jimboite Mn3B2O6 Pnmn,Pmmn 2/m 2/m 2/m
 
06.AA.35 Kotoite Mg3B2O6 Pnmn 2/m 2/m 2/m
 

Other Kotoite 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 Kotoite :
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
15 - WWW-MINCRYST

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

Kotoite

Mg3B2O6
Dana No: 24.03.02.01 Strunz No: 06.AA.35
Locality:

 

Notes: