Kryzhanovskite Mineral Data

Kryzhanovskite Mineral Data +

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General Kryzhanovskite Information

Chemical Formula:

MnFe+++2(PO4)2(OH)2·(H2O)

Composition:

Molecular Weight = 408.60 gm

Manganese 13.45 % Mn 17.36 % MnO

Iron 27.34 % Fe 39.08 % Fe₂O₃

Phosphorus 15.16 % P 34.74 % P₂O₅

Hydrogen 0.99 % H 8.82 % H₂O

Oxygen 43.07 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺Fe³⁺₂(PO₄)₂(OH)₂·(H₂O)

Environment:

Secondary phosphate mineral in pegmatites. Ferric iron equivalent of phosphoferrite.

IMA Status:

Valid Species (Pre-IMA) 1950

Locality:

Kolbinsk pegmatite, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for Vladimir Ilyitch Kryzhanovsky (1881-1947), curator of the Mineralogical Museum, Russian Academy of Sciences, Moscow.

Synonym:

ICSD 303

PDF 24-731

Kryzhanovskite Image

Images:

Kryzhanovskite

Comments: Brown crystals of kryzhanovskite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrau?, Oberpfalz, Bavaria, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Kryzhanovskite Crystallography

Axial Ratios:

a:b:c =0.9429:1:0.8559

Cell Dimensions:

a = 9.404, b = 9.973, c = 8.536, Z = 4; V = 800.56 Den(Calc)= 3.39

Crystal System:

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

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

By Intensity(I/I_o): 3.156(1), 4.996(0.7), 4.701(0.5),

Crystal Structure:

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Moore P B , American Mineralogist , 56 (1971) p.1-17, The Fe3(H2O)n(PO4)2 homologous series: Crystal-chemical relationships and, oxidized equivalents

View Additional jPOWD Structure files for Kryzhanovskite
[1]

Physical Properties of Kryzhanovskite

Cleavage:

[001] Perfect

Color:

Bronze, Greenish brown, Dark reddish brown, Reddish brown.

Density:

3.31

Diaphaniety:

Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Vitreous - Dull

Streak:

yellowish brown

Optical Properties of Kryzhanovskite

Gladstone-Dale:

CI meas= 0.035 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2363,KPDmeas= 0.242,KC= 0.2509

Optical Data:

Biaxial (+), a=1.79, b=1.793-1.794, g=1.82, bire=0.0300, 2V(Calc)=38-44, 2V(Meas)=40-45. Dispersion r << v.

Pleochroism (x):

wine yellow.

Pleochroism (y):

orangy borwn.

Pleochroism (z):

reddish borwn.

Calculated Properties of Kryzhanovskite

Electron Density:

r_electron=3.22 gm/cc
note: r_{Kryzhanovskite}=3.31 gm/cc.

Fermion Index

Fermion Index = 0.006
Boson Index = 0.994

Photoelectric:

PE_{Kryzhanovskite}= 12.34 barns/electron
U=PE_{Kryzhanovskite} x r_electron= 39.78 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kryzhanovskite is Not Radioactive

Kryzhanovskite Classification

Dana Class:

40.3.2.2 (40)Hydrated Phosphates, etc

(40.3)where (A++)3 (XO4)2 · x(H2O)

(40.3.2)Dana Group

40.3.2.1 Phosphoferrite (Fe,Mn)3(PO4)2·3(H2O) Pmna 2/m 2/m 2/m

40.3.2.2 Kryzhanovskite MnFe2(PO4)2(OH)2·(H2O) Pbna 2/m 2/m 2/m

40.3.2.3 Reddingite Mn3(PO4)2·3(H2O) Pbna 2/m 2/m 2/m

40.3.2.4 Landesite (Mn,Mg)9Fe3(PO4)8(OH)3·9(H2O) Pmna 2/m 2/m 2/m

40.3.2.5 Garyansellite (Mg,Fe)3(PO4)2(OH,O)·1,5(H2O) Pbna 2/m 2/m 2/m

Strunz Class:

VII/C.08-40 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg

VII/C.08 - Phosphoferrite - Kryzhanovskite series

VII/C.08-10 Phosphoferrite (Fe,Mn)3(PO4)2·3(H2O) Pmna 2/m 2/m 2/m

VII/C.08-20 Reddingite Mn3(PO4)2·3(H2O) Pbna 2/m 2/m 2/m

VII/C.08-30 Garyansellite (Mg,Fe)3(PO4)2(OH,O)·1,5(H2O) Pbna 2/m 2/m 2/m

VII/C.08-40 Kryzhanovskite MnFe2(PO4)2(OH)2·(H2O) Pbna 2/m 2/m 2/m

Other Kryzhanovskite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Kryzhanovskite :
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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Kryzhanovskite

MnFe+++2(PO4)2(OH)2·(H2O)
Dana No: 40.3.2.2 Strunz No: VII/C.08-40
Locality:

Notes: