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General Sodic-ferripedrizite Information |
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 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: |
Na0.7K0.03Li1.34Na0.58Ca0.08Mg1.75Fe3+1.65Li0.88Al0.21Ti0.11Mn2+0.07Zn0.01Si8O22 (OH)1.35F0.65 | ||
| 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 | |||
Search for Sodic-ferripedrizite Images | |||
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Images:
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Sodic-ferripedrizite Crystallography |
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| 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 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 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), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Sodic-ferripedrizite |
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| Cleavage: |
{110} Perfect, {110} Perfect, 001 Parting | ||
| Color: |
Green. | ||
| Density: |
3.15 | ||
| Diaphaneity: |
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 |
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| 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 Ncalc = 1.71 - 1.72 |
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| 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 |
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| Electron Density: |
Bulk Density (Electron Density)=3.04 gm/cc note: Specific Gravity of Sodic-ferripedrizite =3.08 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.02 Boson Index = 0.98 |
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| Photoelectric: |
PESodic-ferripedrizite = 4.97 barns/electron U=PESodic-ferripedrizite x relectron= 15.10 barns/cc. |
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| Radioactivity: |
GRapi = 2.07 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Sodic-ferripedrizite |
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Sodic-ferripedrizite Classification |
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| Dana Class: |
66.01.01.09 (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) | |||
| 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 | |||
Other Sodic-ferripedrizite Information |
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| 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 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Sodic-ferripedrizite using: Visit our Advertisers for Sodic-ferripedrizite : A Bijoux Google Search for Sodic-ferripedriziteAdam's Minerals Google Search for Sodic-ferripedrizite Cape Minerals Google Search for Sodic-ferripedrizite Dakota Matrix Minerals Google Search for Sodic-ferripedrizite Excalibur Mineral Corp. Google Search for Sodic-ferripedrizite Exceptional Minerals Google Search for Sodic-ferripedrizite John Betts Fine Minerals Search for Sodic-ferripedrizite McDougall Minerals Google Search for Sodic-ferripedrizite Mineral News Website Link Rock and Mineral Shows Google Search for Sodic-ferripedrizite Weinrich Minerals, Inc. Google Search for Sodic-ferripedrizite Ask about Sodic-ferripedrizite here : Print or Cut-and-Paste your Sodic-ferripedrizite Specimen Label here :
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- barely detectable