Titantaramellite Mineral Data

Titantaramellite Mineral Data
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General Titantaramellite Information

Help on Chemical Formula: Chemical Formula: Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe
Help on Composition: Composition: Molecular Weight = 1,442.84 gm
   Barium     37.12 %  Ba   41.44 % BaO
   Magnesium   0.34 %  Mg    0.56 % MgO
   Titanium    6.31 %  Ti   10.52 % TiO2
   Iron        5.42 %  Fe    4.98 % FeO /  2.21 % Fe2O3
   Silicon    15.57 %  Si   33.31 % SiO2
   Boron       1.12 %  B     3.62 % B2O3
   Chlorine    1.97 %  Cl    1.97 % Cl
                -   %   Cl   -0.44 % -O=Cl2   
   Oxygen     32.16 %  O
             ______        ______ 
             100.00 %       98.17 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba3.9Ti1.9Fe2+Fe3+0.4Mg0.2B1.5Si8O29Cl0.8
Help on Environment: Environment: Ba silicates near the contact with large granitic bodies. Changes to fresnoite at 960 deg C.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Rush Creek, Fresno County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for taramellite and dominance of Ti as the octahedral cation.
Help on Name Pronunciation: Name Pronunciation: Titantaramellite + Pronunciation Say TITANTARAMELLITE
Help on Synonym: Synonym: ICSD 100266
  PDF 17-479
 

Titantaramellite Image

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Titantaramellite

Comments: Dark brownish black titantaramellite crystal in quartz.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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Titantaramellite   Alforsite   Sanbornite   Celsian

Comments: SEM image showing alforsite (al). Matrix composed by lamellar sanbornite (sa) and granular quartz (q). Rectangular crystal in the upper right corner is titantaramellite (ti) and isometric crystals included in sanbornite are celsian (ce).
Location: Trumbull Peak, near Incline, Mariposa Co., California, USA. Scale: See Image.
© Pavel M. Kartashov

Titantaramellite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8697:1:0.5112
Help on Cell Dimensions: Cell Dimensions: a = 12.137, b = 13.955, c = 7.134, Z = 2; V = 1,208.30 Den(Calc)= 3.97
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.01(1), 2.584(0.55), 3.83(0.5),
Click Here for Large Titantaramellite Structure Window Crystal Structure:

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drag2 - RMB Resize/Rotate
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Mazzi F , Rossi G , American Mineralogist , 65 (1980) p.123-128, The crystal structure of taramellite, Locality: Rush Creek, Fresno County, California, USA

 

Physical Properties of Titantaramellite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Bronze brown, Purple red.
Help on Density: Density: 4 - 4.08, Average = 4.04
Help on Diaphaneity: Diaphaneity: Translucent to opaque
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
 

Optical Properties of Titantaramellite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1912,KPDmeas= 0.1879,KC= 0.1951
Ncalc = 1.77 - 1.8
Help on Optical Data: Optical Data: Biaxial (+), a=1.739-1.753, b=1.749-1.761, g=1.77-1.782, bire=0.0290-0.0310, 2V(Calc)=64-70, 2V(Meas)=45-77.
Help on Pleochroism (x): Pleochroism (x): yellowish brown.
Help on Pleochroism (y): Pleochroism (y): yellowish brown.
Help on Pleochroism (z): Pleochroism (z): opaque.
 

Calculated Properties of Titantaramellite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.65 gm/cc
note: Specific Gravity of Titantaramellite =3.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PETitantaramellite = 165.23 barns/electron
U=PETitantaramellite x rElectron Density= 603.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Titantaramellite is Not Radioactive
 

Titantaramellite Classification
Help on Dana Class: Dana Class: 64.03.01.02 (64)Cyclosilicates
  (64.03)4-membered rings with [Si2O7] dimers
  (64.03.01)Taramellite group
 
64.03.01.01 Taramellite Ba4(Fe,Ti,Fe,Mg)4(B2Si8O27)O2Clx(x=0to1) Pmmn 2/m 2/m 2/m
 
64.03.01.02 Titantaramellite Ba4(Ti,Fe,Fe,Mg)4(B2Si8O27)O2ClxX=0TO1,withTi>Fe Pmmn 2/m 2/m 2/m
 
64.03.01.03 Nagashimalite Ba4(V,Ti)4Si8B2O27Cl(O,OH)2 Pmmn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: 09.CE.20 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.20 Nagashimalite Ba4(V,Ti)4Si8B2O27Cl(O,OH)2 Pmmn 2/m 2/m 2/m
 
09.CE.20 Titantaramellite Ba4(Ti,Fe,Fe,Mg)4(B2Si8O27)O2ClxX=0TO1,withTi>Fe Pmmn 2/m 2/m 2/m
 
09.CE.20 Taramellite Ba4(Fe,Ti,Fe,Mg)4(B2Si8O27)O2Clx(x=0to1) Pmmn 2/m 2/m 2/m
 

Other Titantaramellite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Titantaramellite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Titantaramellite

Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe
Dana No: 64.03.01.02 Strunz No: 09.CE.20
Locality:

 

Notes: