Mineralogy Database

Fedorite Mineral Data

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General Fedorite Information

Help on Chemical  Formula: Chemical Formula: KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,493.94 gm
   Potassium   2.62 %  K     3.15 % K2O
   Sodium      6.16 %  Na    8.30 % Na2O
   Calcium    10.73 %  Ca   15.01 % CaO
   Aluminum    1.44 %  Al    2.73 % Al2O3
   Silicon    28.58 %  Si   61.13 % SiO2
   Hydrogen    1.01 %  H     9.04 % H2O
   Oxygen     48.19 %  O
   Fluorine    1.27 %  F     1.27 % F
                -   %   F    -0.54 % -O=F2    
             ______        ______ 
             100.00 %      100.11 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KNa4Ca4Al0.8Si15.2O36(OH)3F•6(H2O)
Help on Environment: Environment: In fine veinlets in a fenititzed sandstone.
Help on IMA Status: IMA Status: Approved IMA 1965
Help on Locality: Locality: On the Tur'yii Peninsula, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Evgraf Stepanovich Fedorov (1853-1919), eminent Russian crystallographer.
Help on Name Pronunciation: Name Pronunciation: Fedorite Say FEDORITE
Help on Synonym: Synonym: ICSD 20853
  PDF 19-466
 

Fedorite Image

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  Fedorite   Charoite

Comments: Tan crystalline platy fedorite in pale violet charoite.
Location: Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fedorite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5791:1:0.7921
Help on Cell Dimensions: Cell Dimensions: a = 9.676, b = 16.706, c = 13.233, Z = 2; alpha = 93.35°, beta = 114.96°, gamma = 90.03° V = 1,935.98 Den(Calc)= 2.56
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: C1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.93(1), 2.97(0.9), 1.826(0.9),3.13(0.8), 6(0.8), 11.7(0.8), 4.21(0.7),
 

Physical Properties of Fedorite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless, Light red, Pearl white.
Help on Density: Density: 2.43 - 2.58, Average = 2.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Fedorite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.032 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2061,KPDmeas= 0.2106,KC= 0.2176
Ncalc = 1.53 - 1.56
Help on Optical Data: Optical Data: Biaxial (-), a=1.522, b=1.53, g=1.531, bire=0.0090, 2V(Calc)=38, 2V(Meas)=32. Dispersion r < v distinct.
 

Calculated Properties of Fedorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.52 gm/cc
note: Specific Gravity of Fedorite =2.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFedorite = 2.83 barns/electron
U=PEFedorite x relectron= 7.12 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 37.93 (Gamma Ray American Petroleum Institute Units)
Concentration of Fedorite per GRapi unit = 2.64 (%)

Estimated Radioactivity from Fedorite - barely detectable

 

Fedorite Classification

Help on  Dana Class: Dana Class: 73.01.03.01 (73)Phyllosilicate Condensed Tetrahedral Sheets
  (73.01)with double layers
  (73.01.03)Dana Group
 
73.01.03.01 Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O) C1 1
Help on  Strunz Class: Strunz Class: 09.EE.80 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EE -Single tetrahedral nets of 6-membered rings
 
09.EE.80 Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O) C1 1
 
09.EE.80 Martinite! (Na,[],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) P1 1
 

Other Fedorite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Fedorite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Fedorite

KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O)
Dana No: 73.01.03.01 Strunz No: 09.EE.80
Locality:

 

Notes:

 

 
   
 


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