Sodic-ferri-ferropedrizite Mineral Data

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

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 - Prismatic H-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),

Physical Properties of Sodic-ferri-ferropedrizite

Cleavage:

{110} Good, {110} Good

Color:

Black.

Diaphaneity:

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 (?)

NCalc= 1.73 - from Gladstone-Dale relationship (KC = 0.2276) where Ncalc=Dcalc*KC+1

Calculated Properties of Sodic-ferri-ferropedrizite

Electron Density:

Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Sodic-ferri-ferropedrizite =3.22 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Sodic-ferri-ferropedrizite}= 7.29 barns/electron
U=PE_{Sodic-ferri-ferropedrizite} x rElectron Density= 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:

66.01.01.09b (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.01)with P=2 amphibole configuration

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

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

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

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

66.01.01.03b Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m

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

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

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

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

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

66.01.01.08a Ferri-clinoholmquistite! []Li2Mg3(Fe3)2(Si8O22)(OH)2 C 2/m 2/m

66.01.01.08b Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

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

66.01.01.09a Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m

66.01.01.09b Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

66.01.01.09c Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m

Strunz Class:

09.DE.05 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.05 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Cummingtonite []Mg7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Clinoferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Grunerite []Fe7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Magnesiocummingtonite (Mg,Fe)7Si8O22(OH)2 C 2/m 2/m

09.DE.05 Manganogrunerite []Mn2Fe5Si8O22(OH) C 2/m 2/m

09.DE.05 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m

09.DE.05 Permanganogrunerite! []Mn4(Fe)3(Si8O22)(OH)2 C 2/m 2/m

09.DE.05 Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Fluoro-sodic-pedrizite! NaLi2(Mg2Al2Li)S5Si8O22F2 C 2/m 2/m

09.DE.05 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Manganocummingtonite Na(Na,Mn)2(Mg4,Fe)5Si8O22(OH)2 C 2/m 2/m

09.DE.05 Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m

09.DE.05 Ferri-clinoferroholmquistite! []Li2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m

09.DE.05 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m

09.DE.05 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(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 - 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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Sodic-ferri-ferropedrizite

NaLi2(Fe+++2Fe++3)Si8O22(OH)2
Dana No: 66.01.01.09b Strunz No: 09.DE.05
Locality:

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