Jimboite Mineral Data

Jimboite Mineral Data +

General Jimboite Information

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

IMA Status:

Approved IMA 1963

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 34561

PDF 19-781

Jimboite Image

Images:

Jimboite

Comments: Dark red-brown crystalline jimboite veinlet in massive rhodochrosite.
Location: Rito Mine, Azuma Mura, Seta-gun, Gumma, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jimboite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.78(1), 2.59(0.5), 2.33(0.4),

Physical Properties of Jimboite

Cleavage:

[110] Perfect

Color:

Light purple brown, Reddish brown.

Density:

3.98

Diaphaniety:

Transparent

Hardness:

5.5 - Knife Blade

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Jimboite

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

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

Electron Density:

r_electron=3.75 gm/cc
note: r_Jimboite=3.98 gm/cc.

Fermion Index

Fermion Index = 0.01539
Boson Index = 0.98461

Photoelectric:

PE_Jimboite= 15.36 barns/electron
U=PE_Jimboite x r_electron= 57.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jimboite is Not Radioactive

Jimboite Classification

Dana Class:

24.3.2.2 (24)Borates - Anhydrous

(24.3)where (A)m (B)n [XO3]p

(24.3.2)Dana Group

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

Strunz Class:

V/G.01-20 V - Nitrates, Carbonates and Borates

V/G - "Insel" borates [BO3]3- "inseln"

V/G.01 - Kotoite - Jimboite series

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

Other Jimboite Information

References:

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 -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

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

Jimboite

Mn3B2O6
Dana No: 24.3.2.2 Strunz No: V/G.01-20
Locality:

Notes: