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Fluoro-magnesio-arfvedsonite Mineral Data

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General Fluoro-magnesio-arfvedsonite Information

Help on Chemical  Formula: Chemical Formula: NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2
Help on Composition: Composition: Molecular Weight = 828.15 gm
   Potassium   1.42 %  K     1.71 % K2O
   Sodium      5.55 %  Na    7.48 % Na2O
   Calcium     1.94 %  Ca    2.71 % CaO
   Magnesium  12.03 %  Mg   19.95 % MgO
   Aluminum    0.65 %  Al    1.23 % Al2O3
   Iron        4.72 %  Fe    0.87 % FeO /  5.78 % Fe2O3
   Silicon    26.79 %  Si   57.32 % SiO2
   Hydrogen    0.10 %  H     0.87 % H2O
   Oxygen     44.05 %  O
   Fluorine    2.75 %  F     2.75 % F
                -   %   F    -1.16 % -O=F2    
             ______        ______ 
             100.00 %       99.52 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2K0.3Ca0.4Mg4.1Fe2+0.1Fe3+0.6Al0.2Si7.9O22F1.2(OH)0.8
Help on Environment: Environment: Albite-microcline fenite in the contact zone of the Ilmen alkaline massif.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Ilmen-Vishnevye Mountains alkaline massif, south Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the fluorine-dominant member of magnesio-arfvedsonite.
Help on Synonym: Synonym: IMA1998-056
 

Fluoro-magnesio-arfvedsonite Image

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  Fluoro-magnesio-arfvedsonite

Comments: Heavy mineral concentrate of small dark green fragments of fluoro-magnesio-arfvedsonite.
Location: Unknown. Scale: See Image.
© Rruff Database

Fluoro-magnesio-arfvedsonite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5446:1:0.2931
Help on Cell Dimensions: Cell Dimensions: a = 9.81, b = 18.01, c = 5.28, Z = 2; beta = 103.8° V = 905.93 Den(Calc)= 3.04
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): 3.129(1)(310), 8.42(0.34)(110), 2.804(0.28)(330),3.264(0.23)(240), 2.708(0.17)(151), 3.392(0.11)(041), 1.654(0.1)(511), 2.895(0.1)(510), 2.716(0.1)(331),
 

Physical Properties of Fluoro-magnesio-arfvedsonite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Light gray.
Help on Density: Density: 3.09
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Fluoro-magnesio-arfvedsonite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.206,KPDmeas= 0.2027,KC= 0.209
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (+), a=1.618, b=1.629, g=1.632, bire=0.0140, 2V(Calc)=54, 2V(Meas)=50-70. Dispersion r > v.
 

Calculated Properties of Fluoro-magnesio-arfvedsonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Fluoro-magnesio-arfvedsonite =3.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEFluoro-magnesio-arfvedsonite = 3.19 barns/electron
U=PEFluoro-magnesio-arfvedsonite x relectron= 9.61 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 20.24 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluoro-magnesio-arfvedsonite per GRapi unit = 4.94 (%)

Estimated Radioactivity from Fluoro-magnesio-arfvedsonite - barely detectable

 

Fluoro-magnesio-arfvedsonite Classification

Help on  Dana Class: Dana Class: 66.01.03c.09a (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.03c)Group 4, the sodic amphiboles
 
66.01.03c.01 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.02 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.03 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.04 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.05 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.06 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.07 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.08 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.09 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.09a Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
 
66.01.03c.09b Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
 
66.01.03c.10 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.11 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
 
66.01.03c.11a Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.01.03c.11b Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 
66.01.03c.11c Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
 
66.01.03c.12 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
 
66.01.03c.12a Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
 
66.01.03c.12b Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
 
66.01.03c.13 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
66.01.03c.14 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
 
66.01.03c.15 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
 
66.01.03c.16 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
 
66.01.03c.17 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.25 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DE -Inosilicates with 2-periodic double chains, Si4O11; amphibole family
 
09.DE.25 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m
 
09.DE.25 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m
 
09.DE.25 Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.25 Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m
 
09.DE.25 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m
 
09.DE.25 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.25 Magnesioriebeckite []Na2[(Mg,Fe)3Fe2]Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m
 
09.DE.25 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m
 
09.DE.25 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.25 Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m
 
09.DE.25 Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m
 
09.DE.25 Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m
 
09.DE.25 Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m
 
09.DE.25 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m
 

Other Fluoro-magnesio-arfvedsonite Information

Help on References: References: NAME( AmMin, Vol 86, p 1534) PHYS. PROP.(AmMin, Vol 86, p 1534) OPTIC PROP.(AmMin, Vol 86, p 1534)
Help on See Also: See Also: Links to other databases for Fluoro-magnesio-arfvedsonite :
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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Print or Cut-and-Paste your Fluoro-magnesio-arfvedsonite Specimen Label here :

Fluoro-magnesio-arfvedsonite

NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2
Dana No: 66.01.03c.09a Strunz No: 09.DE.25
Locality:

 

Notes:

 

 
   
 


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