Sodic-ferri-ferropedrizite Mineral Data

Sodic-ferri-ferropedrizite Mineral Data

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General Sodic-ferri-ferropedrizite Information

Chemical Formula:

NaLi2(Fe+++2Fe++3)Si8O22(OH)2

Composition:

Molecular Weight = 851.87 gm

Sodium 1.81 % Na 2.44 % Na₂O

Lithium 1.96 % Li 4.21 % Li₂O

Magnesium 2.71 % Mg 4.49 % MgO

Titanium 0.73 % Ti 1.22 % TiO₂

Manganese 0.45 % Mn 0.58 % MnO

Aluminum 0.67 % Al 1.26 % Al₂O₃

Iron 19.93 % Fe 12.57 % FeO / 14.53 % Fe₂O₃

Silicon 26.38 % Si 56.43 % SiO₂

Hydrogen 0.17 % H 1.53 % H₂O

Oxygen 44.04 % O

Fluorine 1.16 % F 1.16 % F

- % F -0.49 % -O=F₂

______ ______

100.00 % 99.92 % = TOTAL OXIDE

Empirical Formula:

Na_0.52Li_1.82Na_0.15Fe³⁺_1.55Fe²⁺_1.49Mg_0.95Li_0.58Al_0.21Ti_0.13Mn²⁺_0.07Si₈O₂₂(OH)_1.45F_0.52

Environment:

Metamorphic episyenites (deslicification and albitizaton of a cordierite-bearing porphyritic granite). New Group 5 amphibole classification.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Pedriza Massif, Sierra del Guadarrama, Spain. Link to MinDat.org Location Data.

Name Origin:

Named for the locality and the Fe++ and Fe+++ clinoamphiboles.

Synonym:

IMA2001-068

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Sodic-ferri-ferropedrizite Crystallography

Axial Ratios:

a:b:c =0.531:1:0.2962

Cell Dimensions:

a = 9.496, b = 17.883, c = 5.297, Z = 2; beta = 102.06° V = 879.67 Den(Calc)= 3.22

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): 8.241(1)(110), 2.714(0.72)(151), 3.05(0.6)(310),3.416(0.39)(131), 2.494(0.36)(202), 4.471(0.33)(040), 2.164(0.23)(261), 3.563(0.23)(221),

Crystal Structure:

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Oberti R , Camara F , Caballero J M , Ottolini L , The Canadian Mineralogist , 41 (2003) p.1345-1354, Sodic-ferri-ferropedrizite and ferri-clinoferroholmquistite: mineral data and, degree of order of the A-site cations in Li-rich amphiboles, Sequence number in the CNR-IGG database: SEQ 1039

Physical Properties of Sodic-ferri-ferropedrizite

Cleavage:

[110] Good, [110] Good

Color:

Black.

Diaphaniety:

Translucent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Luster:

Vitreous (Glassy)

Streak:

gray

Optical Properties of Sodic-ferri-ferropedrizite

Optical Data:

Biaxial (?)

Calculated Properties of Sodic-ferri-ferropedrizite

Electron Density:

r_electron=3.16 gm/cc
note: r_{Sodic-ferri-ferropedrizite}=3.22 gm/cc.

Fermion Index

Fermion Index = 0.02187
Boson Index = 0.97813

Photoelectric:

PE_{Sodic-ferri-ferropedrizite}= 7.29 barns/electron
U=PE_{Sodic-ferri-ferropedrizite} x r_electron= 23.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sodic-ferri-ferropedrizite is Not Radioactive

Sodic-ferri-ferropedrizite Classification

Dana Class:

66.1.1.9b (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.1)Dana Type

(66.1.1)Group 1, the Mg-Fe-Mn-Li amphiboles (Monoclinic)

66.1.1.1 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m

66.1.1.2 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m

66.1.1.3 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m

66.1.1.3b Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m

66.1.1.4 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m

66.1.1.5 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m

66.1.1.6 Magnesioclinoholmquistite? Li2(Mg,Fe)3Al2Si8O22(OH)2 C 2/m 2/m

66.1.1.7 Clinoholmquistite? [](Li2Mg3Al2)Si8O22(OH)2 C 2/m 2/m

66.1.1.8 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m

66.1.1.8a Ferri-clinoholmquistite! []Li2Mg3(Fe3)2(Si8O22)(OH)2 C 2/m 2/m

66.1.1.8b Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

66.1.1.9 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m

66.1.1.9a Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m

66.1.1.9b Sodic-ferri-ferropedrizite ! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

66.1.1.9c Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m

Strunz Class:

VIII/F.08-95 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 Sodic-ferri-ferropedrizite Information

References:

NAME( CanMin, v 41, p 1345) PHYS. PROP.(CanMin, v 41, p 1345) OPTIC PROP.(CanMin, v 41, p 1345)

See Also:

Links to other databases for Sodic-ferri-ferropedrizite :
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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Sodic-ferri-ferropedrizite

NaLi2(Fe+++2Fe++3)Si8O22(OH)2
Dana No: 66.1.1.9b Strunz No: VIII/F.08-95
Locality:

Notes: