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Ferri-ottoliniite Mineral Data

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General Ferri-ottoliniite Information

Help on Chemical  Formula: Chemical Formula: [ ](Na,Li)(Mg3Fe+++2)Si8O22(OH)2
Help on Composition: 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    2.92 % 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    
             ______        ______ 
             100.00 %      100.02 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.38K0.07Li1.24Na0.7Ca0.06Fe2+0.92Mg1.35Mn2+0.13Zn0.31Fe3+1.71Al0.1Ti0.06Li0.41 Si8O22(OH)1.52F0.47
Help on Environment: Environment: Found as relict cores in other amphiboles in hydrothermal episyenitic bodies in the Pedridza massif. (amphibole group; structure)
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: East sector of the Pedriza Massif, Sierra de Guadarrama, Spanish Central System, Spain. Link to MinDat.org Location Data.
Help on Name Origin: 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.
Help on Synonym: Synonym: IMA2001-067
  IMA2001-067a
 

Ferri-ottoliniite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5333:1:0.2961
Help on Cell Dimensions: Cell Dimensions: a = 9.535, b = 17.876, c = 5.294, Z = 2; beta = 102.54° V = 880.82 Den(Calc)= 3.26
Help on Crystal System: 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/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),
 

Physical Properties of Ferri-ottoliniite

Help on Cleavage: Cleavage: {110} Perfect, {110} Perfect
Help on Color: Color: Black.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: gray
 

Optical Properties of Ferri-ottoliniite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 1.74 - from Gladstone-Dale relationship (KC = 0.2257) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Ferri-ottoliniite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Ferri-ottoliniite =3.26 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEFerri-ottoliniite = 7.66 barns/electron
U=PEFerri-ottoliniite x relectron= 24.52 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4.49 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferri-ottoliniite per GRapi unit = 22.27 (%)

Estimated Radioactivity from Ferri-ottoliniite - barely detectable

 

Ferri-ottoliniite Classification

Help on  Dana Class: Dana Class: 66.01.03d.01 (66)Inosilicate Double-Width Unbranched Chains, W=2
  (66.01)with P=2 amphibole configuration
  (66.01.03d)Group 5, the Na-Ca-Mg-Fe-Mn-Li amphiboles, where Li(b) = 0.50 apfu
 
66.01.03d.01 Ferri-ottoliniite! [](Na,Li)(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m
 
66.01.03d.02 Ferriwhittakerite! Na(NaLi)(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.DE.15 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.15 Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m
 
09.DE.15 Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m
 
09.DE.15 Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m
 
09.DE.15 Ferriwhittakerite! Na(NaLi)(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m
 
09.DE.15 Ferri-ottoliniite! [](Na,Li)(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m
 
09.DE.15 Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m
 

Other Ferri-ottoliniite Information

Help on References: References: NAME( CanMin, 42:1244) PHYS. PROP.(CanMin, 42:1244) OPTIC PROP.(CanMin, 42:1244)
Help on See Also: See Also: Links to other databases for Ferri-ottoliniite :
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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Ferri-ottoliniite

[ ](Na,Li)(Mg3Fe+++2)Si8O22(OH)2
Dana No: 66.01.03d.01 Strunz No: 09.DE.15
Locality:

 

Notes:

 

 
   
 


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