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General Jimboite Information |
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 Chemical Formula: |
Mn3B2O6 | ||
| Composition: |
Molecular Weight = 282.43 gm | ||
| Manganese 58.36 % Mn 75.35 % MnO | |||
| Boron 7.65 % B 24.65 % B2O3 | |||
| Oxygen 33.99 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Mn2+3B2O6 | ||
| Environment: |
Likely formed by metasomatic reactions between boron-bearing hydrothermal solutions and rhodochrosite in banded manganese deposits. | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
Kaso mine, Kanuma, Tochigi Prefecture, Japan. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Kotora Jimbo (1867-1924), founder of the Mineralogical Institute, University of Tokyo, Tokyo, Japan. | ||
| Name Pronunciation: |
Jimboite  |
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| Synonym: |
ICSD 34561 | ||
| PDF 19-781 | |||
Jimboite Image | |||
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Images:
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Jimboite Crystallography |
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| Axial Ratios: |
a:b:c =0.6471:1:0.532 | ||
| Cell Dimensions: |
a = 5.64, b = 8.715, c = 4.637, Z = 2; V = 227.92 Den(Calc)= 4.12 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmn,Pmmn | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.78(1), 2.59(0.5), 2.33(0.4), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Jimboite |
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| Cleavage: |
{110} Perfect | ||
| Color: |
Light purple brown, Reddish brown. | ||
| Density: |
3.98 | ||
| Diaphaneity: |
Transparent | ||
| Hardness: |
5.5 - Knife Blade | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Jimboite |
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| Gladstone-Dale: |
CI meas= -0.001 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.033 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1947,KPDmeas= 0.2016,KC= 0.2014 Ncalc = 1.8 - 1.83 |
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| Optical Data: |
Biaxial (+), a=1.792, b=1.794, g=1.821, bire=0.0290, 2V(Calc)=32, 2V(Meas)=30. | ||
Calculated Properties of Jimboite |
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| Electron Density: |
Bulk Density (Electron Density)=3.75 gm/cc note: Specific Gravity of Jimboite =3.98 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
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| Photoelectric: |
PEJimboite = 15.36 barns/electron U=PEJimboite x rElectron Density= 57.59 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Jimboite is Not Radioactive |
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Jimboite Classification |
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| Dana Class: |
24.03.02.02 (24)Borates - Anhydrous | ||
| (24.03)where (A)m (B)n [XO3]p | |||
| (24.03.02)Dana Group | |||
| Strunz Class: |
06.AA.35 06 - BORATES | ||
| 06.A - Monoborates | |||
| 06.AA -BO3, without additional anions; 1(D) | |||
Other Jimboite Information |
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| References: |
NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Jimboite : 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 Search for Jimboite using: Visit our Advertisers for Jimboite : A Bijoux Google Search for JimboiteAdam's Minerals Google Search for Jimboite Cape Minerals Google Search for Jimboite Dakota Matrix Minerals Google Search for Jimboite Excalibur Mineral Corp. Google Search for Jimboite Exceptional Minerals Google Search for Jimboite John Betts Fine Minerals Search for Jimboite McDougall Minerals Google Search for Jimboite Mineral News Website Link Rock and Mineral Shows Google Search for Jimboite Weinrich Minerals, Inc. Google Search for Jimboite Ask about Jimboite here : Print or Cut-and-Paste your Jimboite Specimen Label here :
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