Ferri-ottoliniite Mineral Data (original) (raw)

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+1.71Al0.1Ti0.06Li0.41Si8O22(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

Search for Ferri-ottoliniite Images

Click Here To Search Images:

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 - PrismaticH-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),

Click Here for Large Ferri-ottoliniite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

| | Oberti R , Camara F , Caballero J M , American Mineralogist , 89 (2004) p.888-893, Ferri-ottoliniite and ferriwhittakerite, two new end-members of the new, Group 5 for monoclinic amphiboles | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

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

Search for Ferri-ottoliniite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Ferri-ottoliniite :

A Bijoux Google Search for Ferri-ottoliniite
Adam's Minerals Google Search for Ferri-ottoliniite
Cape Minerals Google Search for Ferri-ottoliniite
Dakota Matrix Minerals Google Search for Ferri-ottoliniite
Excalibur Mineral Corp. Google Search for Ferri-ottoliniite
Exceptional Minerals Google Search for Ferri-ottoliniite
John Betts Fine Minerals Search for Ferri-ottoliniite
McDougall Minerals Google Search for Ferri-ottoliniite
Mineral News Website Link
Rock and Mineral Shows Google Search for Ferri-ottoliniite
Weinrich Minerals, Inc. Google Search for Ferri-ottoliniite

Ask about Ferri-ottoliniite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

Print or Cut-and-Paste your Ferri-ottoliniite Specimen Label here :

Ferri-ottoliniite

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

Notes: