Zakharovite Mineral Data

Zakharovite Mineral Data +

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General Zakharovite Information

Chemical Formula:

Na4Mn++5Si10O24(OH)6·6(H2O)

Composition:

Molecular Weight = 1,241.63 gm

Sodium 7.41 % Na 9.98 % Na₂O

Manganese 22.12 % Mn 28.57 % MnO

Silicon 22.62 % Si 48.39 % SiO₂

Hydrogen 1.46 % H 13.06 % H₂O

Oxygen 46.39 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₄Mn²⁺₅Si₁₀O₂₄(OH)₆·6(H₂O)

IMA Status:

Approved IMA 1982

Locality:

Link to MinDat.org Location Data.

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Zakharovite Crystallography

Axial Ratios:

a:c = 1:2.58641

Cell Dimensions:

a = 14.58, c = 37.71, Z = 9; V = 6,942.28 Den(Calc)= 2.67

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3₁m,P 3m1

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

By Intensity(I/I_o): 12.57(1), 3.16(0.4), 3.427(0.15),

Physical Properties of Zakharovite

Cleavage:

[0001] Perfect

Color:

Yellow, Bright yellow.

Density:

2.58 - 2.64, Average = 2.61

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

2 - Gypsum

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Zakharovite

Gladstone-Dale:

CI meas= 0.043 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.206,KPDmeas= 0.2107,KC= 0.2203

Optical Data:

Uniaxial (-), e=1.535, w=1.565, bire=0.0300.

Calculated Properties of Zakharovite

Electron Density:

r_electron=2.59 gm/cc
note: r_Zakharovite=2.61 gm/cc.

Fermion Index

Fermion Index = 0.01078
Boson Index = 0.98922

Photoelectric:

PE_Zakharovite= 6.55 barns/electron
U=PE_Zakharovite x r_electron= 16.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zakharovite is Not Radioactive

Zakharovite Classification

Dana Class:

78.3.3.1 (78)Unclassified silicates

(78.3)possible cyclosilicates

(78.3.3)Dana Group

78.3.3.1 Zakharovite Na4Mn5Si10O24(OH)6·6(H2O) P 3₁m,P 3m1 3m

Strunz Class:

VIII/D.02-10 VIII - Silicates

VIII/D - Unclassified silicates, mostly cations of small size Mg, Fe, Mn, Cu

VIII/D.02 - Zakharovite series

VIII/D.02-10 Zakharovite Na4Mn5Si10O24(OH)6·6(H2O) P 3₁m,P 3m1 3m

Other Zakharovite 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 Zakharovite Specimen Label here :

Zakharovite

Na4Mn++5Si10O24(OH)6·6(H2O)
Dana No: 78.3.3.1 Strunz No: VIII/D.02-10
Locality:

Notes: