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Strontiojoaquinite Mineral Data

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General Strontiojoaquinite Information

Help on Chemical  Formula: Chemical Formula: (Na,Fe++)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O)
Help on Composition: Composition: Molecular Weight = 1,284.18 gm
   Barium     21.39 %  Ba   23.88 % BaO
   Sodium      1.79 %  Na    2.41 % Na2O
   Strontium  13.65 %  Sr   16.14 % SrO
   Titanium    7.46 %  Ti   12.44 % TiO2
   Iron        4.35 %  Fe    5.59 % FeO
   Silicon    17.50 %  Si   37.43 % SiO2
   Hydrogen    0.24 %  H     2.10 % H2O
   Oxygen     33.64 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaFe2+Ba2Sr2Ti2(Si4O12)2(OH)O•(H2O)
Help on Environment: Environment: In a metamorphosed and metasomatized basalt lens in serpentinite (Mina Numero) and in veins cutting metagraywacke.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: Nina Numero Uno, near San Benito Mountain, San Benito Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its composition and the relationship to joaquinite (named for Joaquin Ridge, Diablo Range, California, USA).
Help on Synonym: Synonym: IMA2000-D

Strontiojoaquinite Image

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Comments: Yellow, pointed crystals of Strontiojoaquinite on matrix.
Location: Mina Numero Uno, San Benito County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Strontiojoaquinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.077:1:1.2156
Help on Cell Dimensions: Cell Dimensions: a = 10.516, b = 9.764, c = 11.87, Z = 2; beta = 109.283° V = 1,150.42 Den(Calc)= 3.71
Help on Crystal System: Crystal System: Monoclinic - Sphenoidal H-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.801(1), 2.967(0.72), 3.001(0.48),

Physical Properties of Strontiojoaquinite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Green, Yellow brown, Yellow green.
Help on Density: Density: 3.68
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 5.5 - Knife Blade
Help on Luster: Luster: Vitreous (Glassy)

Optical Properties of Strontiojoaquinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1984,KPDmeas= 0.2,KC= 0.203
Ncalc = 1.75
Help on Optical Data: Optical Data: Biaxial (+), a=1.71, b=1.718, g=1.78, bire=0.0700, 2V(Calc)=42, 2V(Meas)=35-45. Dispersion r > v strong.

Calculated Properties of Strontiojoaquinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Strontiojoaquinite =3.68 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEStrontiojoaquinite = 110.54 barns/electron
U=PEStrontiojoaquinite x rElectron Density= 380.11 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Strontiojoaquinite is Not Radioactive

Strontiojoaquinite Classification

Help on  Dana Class: Dana Class: 60.01.01a.02 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.01a)Joaquinite group (Clino-joaquinite subgroup)
60.01.01a.01 Joaquinite-(Ce) NaFeBa2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O) C 2 2
60.01.01a.02 Strontiojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) C 2 2
Help on  Strunz Class: Strunz Class: 09.CE.25 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
09.CE.25 Byelorussite-(Ce) NaBa2(Ce,La)2MnTi2Si8O26(F,OH)•(H2O) P 212121 2 2 2
09.CE.25 Bario-orthojoaquinite Fe2(Ba,Sr)4Ti2[Si4O12]O2•(H2O) Ccmm or Ccm2 Ortho
09.CE.25 Joaquinite-(Ce) NaFeBa2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O) C 2 2
09.CE.25 Orthojoaquinite-(Ce) NaFeBa2Ce2Ti2[Si4O12]2O2(OH)•(H2O) Ccmm or Ccm21 Ortho
09.CE.25 Strontio-orthojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) Pbcm or Pbc2 Ortho
09.CE.25 Strontiojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) C 2 2
09.CE.25 Orthojoaquinite-(La)! Ba2Na(La,Ce)2FeTi2Si8O26(OH,O,F)•H2O Ccmm 2/m 2/m 2/m

Other Strontiojoaquinite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Strontiojoaquinite :
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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Dana No: 60.01.01a.02 Strunz No: 09.CE.25





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