Ferri-ottoliniite Mineral Data |
General Ferri-ottoliniite Information |
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Chemical Formula: | [ ](Na,Li)(Mg3Fe+++2)Si8O22(OH)2 | ||
Composition: | Molecular Weight = 865.55 gm | ||
Potassium 0.32 % K 0.38 % K2O | |||
Sodium 2.87 % Na 3.87 % Na2O | |||
Lithium 1.32 % Li 2.85 % Li2O | |||
Calcium 0.28 % Ca 0.39 % CaO | |||
Magnesium 3.79 % Mg 6.29 % MgO | |||
Titanium 0.33 % Ti 0.55 % TiO2 | |||
Manganese 0.83 % Mn 1.07 % MnO | |||
Aluminum 0.31 % Al 0.59 % Al2O3 | |||
Zinc 2.34 % Zn 2.91 % ZnO | |||
Iron 16.97 % Fe 7.64 % FeO / 15.77 % Fe2O3 | |||
Silicon 25.96 % Si 55.53 % SiO2 | |||
Hydrogen 0.18 % H 1.58 % H2O | |||
Oxygen 43.48 % O | |||
Fluorine 1.03 % F 1.03 % F | |||
- % F -0.43 % -O=F2 | |||
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100.00 % 100.02 % = TOTAL OXIDE | |||
Empirical Formula: | Na0.38K0.07Li1.24Na0.7Ca0.06Fe2+0.92Mg1.35Mn2+0.13Zn0.31Fe3+1.71Al0.1Ti0.06Li0.41 Si8O22(OH)1.52F0.47 | ||
Environment: | Found as relict cores in other amphiboles in hydrothermal episyenitic bodies in the Pedridza massif. (amphibole group; structure) | ||
IMA Status: | Approved IMA 2004 (Dana # Added) | ||
Locality: | East sector of the Pedriza Massif, Sierra de Guadarrama, Spanish Central System, Spain. Link to MinDat.org Location Data. | ||
Name Origin: | Named for Luisa Ottolini (b. 1954), of CNR - Istituto di Geoscienze e Georisorse, Pavia, Italy, for her fundamental contributions to the advancement of ion-probe analysis of rock-fo rming minerals. | ||
Synonym: | IMA2001-067 | ||
IMA2001-067a | |||
Search for Ferri-ottoliniite Images | |||
Images: |
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Ferri-ottoliniite Crystallography |
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Axial Ratios: | a:b:c =0.5333:1:0.2961 | ||
Cell Dimensions: | a = 9.535, b = 17.876, c = 5.294, Z = 2; beta = 102.54° V = 880.82 Den(Calc)= 3.26 | ||
Crystal System: | Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | ||
X Ray Diffraction: | By Intensity(I/Io): 8.256(1)(110), 2.709(0.81)(151), 2.501(0.68)(202),3.057(0.56)(310), 3.407(0.45)(131), 4.469(0.33)(040), 2.581(0.26)(061), 2.16(0.25)(261), | ||
Crystal Structure:
Mouse |
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Physical Properties of Ferri-ottoliniite |
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Cleavage: | [110] Perfect, [110] Perfect | ||
Color: | Black. | ||
Diaphaniety: | Translucent | ||
Fracture: | Brittle - Uneven - Very brittle fracture producing uneven fragments. | ||
Habit: | Aggregates - Made of numerous individual crystals or clusters. | ||
Habit: | Granular - Generally occurs as anhedral to subhedral crystals in matrix. | ||
Hardness: | 5-6 - Between Apatite and Orthoclase | ||
Luster: | Vitreous (Glassy) | ||
Streak: | gray | ||
Optical Properties of Ferri-ottoliniite |
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Optical Data: | Biaxial (?) | ||
Calculated Properties of Ferri-ottoliniite |
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Electron Density: | relectron=3.20 gm/cc |
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Fermion Index | Fermion Index = 0.0221 Boson Index = 0.9779 |
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Photoelectric: | PEFerri-ottoliniite = 7.66 barns/electron |
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Radioactivity: | GRapi = 4.49 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Ferri-ottoliniite - barely detectable |
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Ferri-ottoliniite Classification |
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Dana Class: | 66.1.3d.1 (66)Inosilicate Double-Width Unbranched Chains, W=2 | ||
(66.1)Dana Type | |||
(66.1.3d)Group 5, the Na-Ca-Mg-Fe-Mn-Li amphiboles, where Li(b) = 0.50 apfu | |||
Strunz Class: | VIII/FX.00-00 VIII - Silicates | ||
VIII/FX - Unclassified Strunz Inosilicates | |||
VIII/FX.00 - Group 5, the Na-Ca-Mg-Fe-Mn-Li | |||
Other Ferri-ottoliniite Information |
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References: | NAME( CanMin, 42:1244) PHYS. PROP.(CanMin, 42:1244) OPTIC PROP.(CanMin, 42:1244) | ||
See Also: | Links to other databases for Ferri-ottoliniite : 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) Search for Ferri-ottoliniite using: Visit our Advertisers for Ferri-ottoliniite : Translate Ferri-ottoliniite Mineral Data : Ask about Ferri-ottoliniite here : Print or Cut-and-Paste your Ferri-ottoliniite Specimen Label here :
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