Kotoite Mineral Data + 
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- 24.3.2.1 Kotoite Mg3B2O6 Pnmn 2/m 2/m 2/m
- 24.3.2.2 Jimboite Mn3B2O6 Pnmn,Pmmn 2/m 2/m 2/m
- V/G.01-10 Kotoite Mg3B2O6 Pnmn 2/m 2/m 2/m
- V/G.01-20 Jimboite Mn3B2O6 Pnmn,Pmmn 2/m 2/m 2/m
- V/G.01-25 Jacquesdietrichite! Cu2[BO(OH)2](OH)3 P nma 2/m 2/m 2/m
- V/G.01-30 Takedaite Ca3(BO3)2 R 3c 3 2/m
General Kotoite Information |
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 Chemical Formula: |
Mg3B2O6 | ||
| 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 | |||
| Empirical Formula: |
Mg3B2O6 | ||
| Environment: |
Contact metamorphosed dolomite. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1939 | ||
| Locality: |
Hol Kol mine, Suan, Korea. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Bundjiro Koto (1856-1935), Japanese geologist. | ||
| Synonym: |
ICSD 31385 | ||
| PDF 381475 | |||
Kotoite Image | |||
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Images:
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Kotoite Crystallography |
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| Axial Ratios: |
a:b:c =0.6413:1:0.5343 | ||
| Cell Dimensions: |
a = 5.398, b = 8.416, c = 4.497, Z = 2; V = 204.30 Den(Calc)= 3.10 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmn | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.18(1), 2.23(1), 2.67(1), | ||
Physical Properties of Kotoite |
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| Cleavage: |
[110] Perfect | ||
| Color: |
Colorless, White. | ||
| Density: |
3.04 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. | ||
| Hardness: |
6.5 - Pyrite | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Kotoite |
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| 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 |
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| 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 |
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| Electron Density: |
relectron=3.06 gm/cc |
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| Fermion Index |
Fermion Index = 0.06109 Boson Index = 0.93891 |
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| Photoelectric: |
PEKotoite = 0.97 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kotoite is Not Radioactive |
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Kotoite Classification |
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| Dana Class: |
24.3.2.1 (24)Borates - Anhydrous | ||
| (24.3)where (A)m (B)n [XO3]p | |||
| (24.3.2)Dana Group | |||
| Strunz Class: |
V/G.01-10 V - Nitrates, Carbonates and Borates | ||
| V/G - "Insel" borates [BO3]3- "inseln" | |||
| V/G.01 - Kotoite - Jimboite series | |||
Other Kotoite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Kotoite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Kotoite using: Visit our Advertisers for Kotoite : Translate Kotoite Mineral Data : Ask about Kotoite here : Print or Cut-and-Paste your Kotoite Specimen Label here :
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