Kanonaite Mineral Data

Kanonaite Mineral Data +

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General Kanonaite Information

Chemical Formula:

(Mn+++,Al)AlSiO5

Composition:

Molecular Weight = 183.01 gm

Manganese 22.51 % Mn 32.35 % Mn₂O₃

Aluminum 18.43 % Al 34.82 % Al₂O₃

Silicon 15.35 % Si 32.83 % SiO₂

Oxygen 43.71 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn³⁺_0.75Al_1.25SiO₅

IMA Status:

Approved IMA 1978

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 100748

PDF 42-575

Kanonaite Image

Images:

Kanonaite

Comments: Dark greenish black microcrystal of kanonaite in matrix.
Location: Le Coreaux, near Salmchateau, Luxembourg, Belgium. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kanonaite Crystallography

Axial Ratios:

a:b:c =0.9894:1:0.699

Cell Dimensions:

a = 7.953, b = 8.038, c = 5.619, Z = 4; V = 359.20 Den(Calc)= 3.38

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnnm

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

By Intensity(I/I_o): 5.669(1), 2.827(0.94), 3.567(0.9),

Crystal Structure:

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Weiss Z , Bailey S W , Rieder M , American Mineralogist , 66 (1981) p.561-567, Refinement of the crystal structure of kanonaite, (Mn,Al)(Al,Mn)O[SiO4]

Physical Properties of Kanonaite

Cleavage:

[110] Indistinct

Color:

Greenish black.

Density:

3.395

Diaphaniety:

Transparent to Subopaque

Hardness:

6.5 - Pyrite

Luster:

Vitreous (Glassy)

Streak:

gray green

Optical Properties of Kanonaite

Gladstone-Dale:

CI meas= 0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2224,KPDmeas= 0.2214,KC= 0.2377

Optical Data:

Biaxial (+), a=1.702, b=1.73, g=1.823, bire=0.1210, 2V(Calc)=62, 2V(Meas)=75-90.

Calculated Properties of Kanonaite

Electron Density:

r_electron=3.29 gm/cc
note: r_Kanonaite=3.38 gm/cc.

Fermion Index

Fermion Index = 0.00737
Boson Index = 0.99263

Photoelectric:

PE_Kanonaite= 6.87 barns/electron
U=PE_Kanonaite x r_electron= 22.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kanonaite is Not Radioactive

Kanonaite Classification

Dana Class:

52.2.2b.2 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.2)with cations in [4] and >[4] coordination

(52.2.2b)AL2SIO5 Andalusite subgroup)

52.2.2b.1 Andalusite Al2SiO5=Al[6]Al[5]OSiO4 Pnnm 2/m 2/m 2/m

52.2.2b.2 Kanonaite (Mn,Al)AlSiO5 Pnnm 2/m 2/m 2/m

52.2.2b.3 Yoderite Mg2(Al,Fe)6Si4O18(OH)2 P 2₁ 2

Strunz Class:

VIII/B.02-30 VIII - Silicates

VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]

VIII/B.02 - Disthene series

VIII/B.02-10 Sillimanite Al2SiO5=Al[6]Al[4]OSiO4 P nma 2/m 2/m 2/m

VIII/B.02-20 Andalusite Al2SiO5=Al[6]Al[5]OSiO4 Pnnm 2/m 2/m 2/m

VIII/B.02-30 Kanonaite (Mn,Al)AlSiO5 Pnnm 2/m 2/m 2/m

VIII/B.02-40 Kyanite Al2SiO5=Al[6]Al[6]OSiO4 P1 1

VIII/B.02-50 Mullite Al(42x)Si(2-2x)O(10-x)wherex=0.17to0.59 Pbam 2/m 2/m 2/m

VIII/B.02-60 Yoderite Mg2(Al,Fe)6Si4O18(OH)2 P 2₁ 2

VIII/B.02-70 Topaz Al2SiO4(F,OH)2 Pbnm 2/m 2/m 2/m

Other Kanonaite Information

References:

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

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

Kanonaite

(Mn+++,Al)AlSiO5
Dana No: 52.2.2b.2 Strunz No: VIII/B.02-30
Locality:

Notes: