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Parakuzmenkoite-Fe Mineral Data

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General Parakuzmenkoite-Fe Information

Help on Chemical Formula: Chemical Formula: (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O)
Help on Composition: Composition: Molecular Weight = 2,567.15 gm
   Potassium   2.44 %  K     2.94 % K2O
   Barium      8.02 %  Ba    8.96 % BaO
   Sodium      0.36 %  Na    0.48 % Na2O
   Strontium   0.34 %  Sr    0.40 % SrO
   Calcium     0.16 %  Ca    0.22 % CaO
   Titanium    8.21 %  Ti   13.69 % TiO2
   Manganese   1.50 %  Mn    1.93 % MnO
   Niobium    12.30 %  Nb   17.60 % Nb2O5
   Zinc        0.25 %  Zn    0.32 % ZnO
   Iron        3.92 %  Fe    5.60 % Fe2O3
   Silicon    17.50 %  Si   37.45 % SiO2
   Hydrogen    1.19 %  H    10.60 % H2O
   Oxygen     43.81 %  O
             ______        ______ 
             100.00 %      100.19 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.6Na0.4Ba1.5Sr0.1Ca0.1Zn0.1Fe3+1.6Mn2+0.7Ti4.4Nb3.4Fe3+0.2(Si4O12)4 O6.4(OH)1.6�14.3(H2O)
Help on Environment: Environment: Alkaline pegmatite. Labuntsovite group; structure.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Fe-dominant analog of kuzmenkoite-Mn with a doubled c-axis.
Help on Synonym: Synonym: IMA2001-007
 

Parakuzmenkoite-Fe Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0381:1:1.1229
Help on Cell Dimensions: Cell Dimensions: a = 14.41, b = 13.88, c = 15.587, Z = 2; beta = 117.53° V = 2,764.56 Den(Calc)= 3.08
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.09(1)(042,024), 3.19(1)(422,400), 6.91(1)(020,002),2.58(0.9)(480,484,4.2.11.422(0.8),
 

Physical Properties of Parakuzmenkoite-Fe

Help on Cleavage: Cleavage: {???} Imperfect
Help on Color: Color: Orange, Reddish orange.
Help on Density: Density: 3
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Parakuzmenkoite-Fe

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.236,KPDmeas= 0.2423,KC= 0.256
Ncalc = 1.77 - 1.79
Help on Optical Data: Optical Data: Biaxial (+), a=1.687, b=1.689, g=1.805, bire=0.1180
 

Calculated Properties of Parakuzmenkoite-Fe

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.91 gm/cc
note: Specific Gravity of Parakuzmenkoite-Fe =3.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEParakuzmenkoite-Fe = 55.51 barns/electron
U=PEParakuzmenkoite-Fe x relectron= 161.49 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 34.08 (Gamma Ray American Petroleum Institute Units)
Concentration of Parakuzmenkoite-Fe per GRapi unit = 2.93 (%)

Estimated Radioactivity from Parakuzmenkoite-Fe - barely detectable

 

Parakuzmenkoite-Fe Classification
Help on Dana Class: Dana Class: 60.01.03h.03 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.03h)Labuntsovite Group (Organovaite subgroup Monoclinic [C2/m])
 
60.01.03h.01 Organovaite-Mn! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) Cm m
 
60.01.03h.02 Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
 
60.01.03h.03 Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
Help on Strunz Class: Strunz Class: 09.CE.30g 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.30g Parakuzmenkoite-Fe! (K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O) C 2/m 2/m
 
09.CE.30g Organovaite-Zn! K2Zn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) C 2/m 2/m
 
09.CE.30g Organovaite-Mn! K2Mn(Nb,Ti)4(Si4O12)2(O,OH)4•6(H2O) Cm m
 

Other Parakuzmenkoite-Fe Information
Help on References: References: NAME( AmMin, v 87, p 1735) PHYS. PROP.(AmMin, v 87, p 1735) OPTIC PROP.(AmMin, v 87, p 1735)
Help on See Also: See Also: Links to other databases for Parakuzmenkoite-Fe :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Parakuzmenkoite-Fe

(K,Ba)2Fe(Ti,Nb)4(Si4O12)2(O,OH)4•7(H2O)
Dana No: 60.01.03h.03 Strunz No: 09.CE.30g
Locality:

 

Notes:

 
 
   
 

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