Kanoite Mineral Data

Kanoite Mineral Data +

General Kanoite Information

Chemical Formula:

(Mn++,Mg)2Si2O6

Composition:

Molecular Weight = 246.73 gm

Magnesium 4.93 % Mg 8.17 % MgO

Manganese 33.40 % Mn 43.13 % MnO

Silicon 22.77 % Si 48.71 % SiO₂

Oxygen 38.91 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺_1.5Mg_0.5Si₂O₆

IMA Status:

Approved IMA 1977

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 100757

PDF 29-865

Kanoite Image

Images:

Kanoite

Comments: Brown, prismatic crystals of kanoite in matrix.
Location: Tatehira, Oshima Peninsula, Hokkaido, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kanoite Crystallography

Axial Ratios:

a:b:c =1.0894:1:0.5884

Cell Dimensions:

a = 9.739, b = 8.939, c = 5.26, Z = 4; beta = 108.56° V = 434.10 Den(Calc)= 3.77

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3.21(1), 2.91(0.9), 3.02(0.9),

Crystal Structure:

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Gordon W A , Peacor D R , Brown P E , Essene E J , Allard L F , American Mineralogist , 66 (1981) p.127-141, Exsolution relationship in a clinopyroxene of average composition, Ca0.43Mn0.69Mg0.82Si2O6: X-ray diffraction and analytical electron microscopy

View Additional jPOWD Structure files for Kanoite
[1] [2] [3] [4] [5]

Physical Properties of Kanoite

Cleavage:

[???] Perfect

Color:

Pink brown, Reddish brown.

Density:

3.66

Diaphaniety:

Transparent to Translucent

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Vitreous (Glassy)

Streak:

light brown

Optical Properties of Kanoite

Gladstone-Dale:

CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1908,KPDmeas= 0.1965,KC= 0.2026

Optical Data:

Biaxial (+), a=1.715, b=1.715, g=1.728, bire=0.0130, 2V(Calc)=0, 2V(Meas)=40-42.

Calculated Properties of Kanoite

Electron Density:

r_electron=3.55 gm/cc
note: r_Kanoite=3.66 gm/cc.

Fermion Index

Fermion Index = 0.01574
Boson Index = 0.98426

Photoelectric:

PE_Kanoite= 9.51 barns/electron
U=PE_Kanoite x r_electron= 33.73 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kanoite is Not Radioactive

Kanoite Classification

Dana Class:

65.1.1.3 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.1)with chains P=2

(65.1.1)P2/c clinopyroxenes

65.1.1.1 Clinoenstatite Mg2Si2O6 P 2₁/c 2/m

65.1.1.2 Clinoferrosilite (Fe,Mg)2Si2O6 P 2₁/c 2/m

65.1.1.3 Kanoite (Mn,Mg)2Si2O6 P 2₁/c 2/m

65.1.1.4 Pigeonite (Mg,Fe,Ca)(Mg,Fe)Si2O6 P 2₁/c 2/m

Strunz Class:

VIII/F.01-30 VIII - Silicates

VIII/F - Inosilicates (chain and band) double chains [Si2O6]4-

VIII/F.01 - Pyroxene group, Clinopyroxene

VIII/F.01-10 Clinoenstatite Mg2Si2O6 P 2₁/c 2/m

VIII/F.01-20 Clinoferrosilite (Fe,Mg)2Si2O6 P 2₁/c 2/m

VIII/F.01-30 Kanoite (Mn,Mg)2Si2O6 P 2₁/c 2/m

VIII/F.01-40 Pigeonite (Mg,Fe,Ca)(Mg,Fe)Si2O6 P 2₁/c 2/m

VIII/F.01-50 Diopside CaMgSi2O6 C 2/c 2/m

VIII/F.01-60 Hedenbergite CaFeSi2O6 C 2/c 2/m

VIII/F.01-70 Johannsenite CaMnSi2O6 C 2/c 2/m

VIII/F.01-80 Petedunnite Ca(Zn,Mn,Fe,Mg)Si2O6 C 2/c 2/m

VIII/F.01-90 Augite (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 C 2/c 2/m

VIII/F.01-100 Omphacite (Ca,Na)(Mg,Fe,Al)Si2O6 P 2/n 2/m

VIII/F.01-110 Esseneite CaFeAlSiO6 C 2/c 2/m

VIII/F.01-120 Spodumene LiAlSi2O6 C 2/c 2/m

VIII/F.01-130 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m

VIII/F.01-140 Aegirine NaFeSi2O6 C 2/c 2/m

VIII/F.01-145 Namansilite NaMn(Si2O6) C 2/c 2/m

VIII/F.01-150 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m

VIII/F.01-160 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m

VIII/F.01-170 Kosmochlor NaCrSi2O6 C 2/c 2/m

Other Kanoite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Kanoite

(Mn++,Mg)2Si2O6
Dana No: 65.1.1.3 Strunz No: VIII/F.01-30
Locality:

Notes: