Sodic-ferripedrizite Mineral Data

Sodic-ferripedrizite Mineral Data

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General Sodic-ferripedrizite Information

Chemical Formula:

Na(LiNa)(Fe+++2Mg2Li)Si8O22(OH,F)2

Composition:

Molecular Weight = 811.31 gm

Potassium 0.14 % K 0.17 % K₂O

Sodium 3.63 % Na 4.89 % Na₂O

Lithium 1.90 % Li 4.09 % Li₂O

Calcium 0.40 % Ca 0.55 % CaO

Magnesium 5.24 % Mg 8.69 % MgO

Titanium 0.65 % Ti 1.08 % TiO₂

Manganese 0.47 % Mn 0.61 % MnO

Aluminum 0.70 % Al 1.32 % Al₂O₃

Zinc 0.08 % Zn 0.10 % ZnO

Iron 11.36 % Fe 16.24 % Fe₂O₃

Silicon 27.69 % Si 59.25 % SiO₂

Hydrogen 0.17 % H 1.50 % H₂O

Oxygen 46.05 % O

Fluorine 1.52 % F 1.52 % F

- % F -0.64 % -O=F₂

______ ______

100.00 % 99.38 % = TOTAL OXIDE

Empirical Formula:

Na_0.7K_0.03Li_1.34Na_0.58Ca_0.08Mg_1.75Fe³⁺_1.65Li_0.88Al_0.21Ti_0.11Mn²⁺_0.07Zn_0.01Si₈O₂₂ (OH)_1.35F_0.65

Environment:

In hydrothermal episyenites formed after cordierite-bearing porphyritic granites. A member of the amphibole group.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

In the Arroyo de la Yedra, Eastern Pedriza Massif, Sierra de Guadarrama, Central System, Spain. Link to MinDat.org Location Data.

Name Origin:

Named for the locality and the prefixes "ferri" and "sodic" as recommended by the amphibole commission.

Synonym:

ICSD 89815

IMA1998-061

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Sodic-ferripedrizite Crystallography

Axial Ratios:

a:b:c =0.536:1:0.2966

Cell Dimensions:

a = 9.536, b = 17.789, c = 5.277, Z = 2; beta = 102.53° V = 873.85 Den(Calc)= 3.08

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): 3.056(1)(310), 2.699(0.6)(151), 2.749(0.54)(330),1.639(0.44)(461), 3.397(0.28)(131), 8.25(0.24)(110), 1.396(0.23)(661), 4.446(0.22)(040), 1.92(0.2)(421),

Crystal Structure:

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Oberti R , Caballero J M , Ottolini L , Lopez-Andres S , Herreros V , American Mineralogist , 85 (2000) p.578-585, Sodic-ferripedrizite, a new monoclinic amphibole, bridging the magnesium-iron-manganese-lithium and the sodium-calcium groups, Note: site occupancy unknown, Sample: crystal P(1)

View Additional jPOWD Structure files for Sodic-ferripedrizite
[1]

Physical Properties of Sodic-ferripedrizite

Cleavage:

[110] Perfect, [110] Perfect, 001 Parting

Color:

Green.

Density:

3.15

Diaphaniety:

Semitranslucent

Fracture:

Brittle - Splintery - Brittle fracture leaving splintery fragments.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

gray

Optical Properties of Sodic-ferripedrizite

Gladstone-Dale:

CI meas= 0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2266,KPDmeas= 0.2216,KC= 0.2293

Optical Data:

Biaxial (-), a=1.694, b=1.698, g=1.702, bire=0.0080, 2V(Calc)=88, 2V(Meas)=83. Dispersion r > v medium.

Calculated Properties of Sodic-ferripedrizite

Electron Density:

r_electron=3.04 gm/cc
note: r_{Sodic-ferripedrizite}=3.08 gm/cc.

Fermion Index

Fermion Index = 0.0231
Boson Index = 0.9769

Photoelectric:

PE_{Sodic-ferripedrizite}= 4.97 barns/electron
U=PE_{Sodic-ferripedrizite} x r_electron= 15.10 barns/cc.

Radioactivity:

GRapi = 2.07 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Sodic-ferripedrizite - barely detectable

Sodic-ferripedrizite Classification

Dana Class:

66.1.1.9 (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.08-83 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-ferripedrizite Information

References:

NAME( MinRec, v 32, p 220) PHYS. PROP.(MinRec, v 32, p 220) OPTIC PROP.(MinRec, v 32, p 220)

See Also:

Links to other databases for Sodic-ferripedrizite :
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-ferripedrizite

Na(LiNa)(Fe+++2Mg2Li)Si8O22(OH,F)2
Dana No: 66.1.1.9 Strunz No: VIII/F.08-83
Locality:

Notes: