Fluoro-ferroleakeite Mineral Data

Fluoro-ferroleakeite Mineral Data

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General Fluoro-ferroleakeite Information

Chemical Formula:

NaNa2(Fe++2Fe+++2Li)Si8O22F2

Composition:

Molecular Weight = 913.97 gm

Sodium 7.55 % Na 10.17 % Na₂O

Lithium 0.76 % Li 1.63 % Li₂O

Iron 24.44 % Fe 15.72 % FeO / 17.47 % Fe₂O₃

Silicon 24.58 % Si 52.59 % SiO₂

Oxygen 38.51 % O

Fluorine 4.16 % F 4.16 % F

- % F -1.75 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₃Fe²⁺₂Fe³⁺₂Li(Si₈O₂₂)F₂

Environment:

Mildly perialkaline porphyry.

IMA Status:

Approved IMA 1996

Locality:

The Canada Pinabete pluton, Wuesta, New Mexico, USA. Link to MinDat.org Location Data.

Name Origin:

Named after its composition containing fluorine and iron and with the mineral leakeite.

Synonym:

IMA1993-026

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Fluoro-ferroleakeite Crystallography

Axial Ratios:

a:b:c =0.5458:1:0.2962

Cell Dimensions:

a = 9.792, b = 17.938, c = 5.3133, Z = 2; beta = 103.867° V = 906.07 Den(Calc)= 3.35

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 2.71(1), 2.536(0.92), 3.404(0.57),

Physical Properties of Fluoro-ferroleakeite

Cleavage:

[110] Perfect

Color:

Bluish black, Black.

Density:

3.37

Diaphaniety:

Opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

bluish gray

Optical Properties of Fluoro-ferroleakeite

Optical Data:

Biaxial (-), a=1.675, b=1.683, g=1.694, bire=0.0190, 2V(Calc)=82, 2V(Meas)=87. Dispersion not discernible.

Calculated Properties of Fluoro-ferroleakeite

Electron Density:

r_electron=3.27 gm/cc
note: r_{Fluoro-ferroleakeite}=3.35 gm/cc.

Fermion Index

Fermion Index = 0.01741
Boson Index = 0.98259

Photoelectric:

PE_{Fluoro-ferroleakeite}= 8.38 barns/electron
U=PE_{Fluoro-ferroleakeite} x r_electron= 27.41 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Fluoro-ferroleakeite is Not Radioactive

Fluoro-ferroleakeite Classification

Dana Class:

66.1.3c.15 (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.1)Dana Type

(66.1.3c)Group 4, the sodic amphiboles

66.1.3c.1 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m

66.1.3c.2 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m

66.1.3c.3 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m

66.1.3c.4 Magnesioriebeckite []Na2(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m

66.1.3c.5 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m

66.1.3c.6 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m

66.1.3c.7 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m

66.1.3c.8 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m

66.1.3c.9 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m

66.1.3c.9a Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m

66.1.3c.9b Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m

66.1.3c.10 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m

66.1.3c.11 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m

66.1.3c.11a Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m

66.1.3c.11b Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m

66.1.3c.11c Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m

66.1.3c.12 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m

66.1.3c.12a Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m

66.1.3c.12b Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m

66.1.3c.13 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m

66.1.3c.14 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m

66.1.3c.15 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m

66.1.3c.16 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m

66.1.3c.17 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m

Strunz Class:

VIII/F.08-86 VIII - Silicates

VIII/F - Inosilicates (chain and band) double chains [Si4O11]6-, Alkali-Amphiboles

VIII/F.08 - Amphibole group, Glaucophane - Riebeckite - Kozulite series

VIII/F.08-10 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-20 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-30 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m

VIII/F.08-40 Magnesioriebeckite []Na2(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-50 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-56 Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m

VIII/F.08-60 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m

VIII/F.08-65 Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m

VIII/F.08-67 Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m

VIII/F.08-70 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-80 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-81 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-83 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m

VIII/F.08-84 Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m

VIII/F.08-85 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-86 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m

VIII/F.08-87 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m

VIII/F.08-88 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m

VIII/F.08-89 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m

VIII/F.08-90 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-92 Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m

VIII/F.08-95 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-100 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-105 Ferriwhittakerite! Na(NaLi)(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-110 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m

VIII/F.08-112 Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m

VIII/F.08-125 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m

VIII/F.08-157 Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m

Other Fluoro-ferroleakeite Information

References:

NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Fluoro-ferroleakeite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Fluoro-ferroleakeite Specimen Label here :

Fluoro-ferroleakeite

NaNa2(Fe++2Fe+++2Li)Si8O22F2
Dana No: 66.1.3c.15 Strunz No: VIII/F.08-86
Locality:

Notes: