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Strontio-orthojoaquinite Mineral Data |
General Strontio-orthojoaquinite Information |
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(Na,Fe++)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) | |
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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 | ||
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NaFe2+Ba2Sr2Ti2(Si4O12)2(OH)O•(H2O) | |
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Approved IMA 1982 | |
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Dallas Gem mine, San Benito Co. California. Link to MinDat.org Location Data. | |
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Named after its composition, orthorhombic crystal structure, and the relationship to joaquinite (named for Joaquin Ridge, Diablo Range, California, USA). | |
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IMA2000-D | |
Strontio-orthojoaquinite Crystallography |
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a:b:c =1.0756:1:2.2902 | |
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a = 10.517, b = 9.777, c = 22.392, Z = 4; V = 2,302.45 Den(Calc)= 3.70 | |
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Orthorhombic Space Group: Pbcm or Pbc2 | |
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By Intensity(I/Io): 2.801(1), 2.967(0.72), 3.001(0.48), | |
Physical Properties of Strontio-orthojoaquinite |
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{001} Good | |
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Green, Yellow green. | |
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3.62 | |
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Transparent | |
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5.5 - Knife Blade | |
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Vitreous (Glassy) | |
Optical Properties of Strontio-orthojoaquinite |
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CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1989,KPDmeas= 0.2033,KC= 0.203 Ncalc = 1.73 - 1.75 |
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Biaxial (+), a=1.71, b=1.718, g=1.78, bire=0.0700, 2V(Calc)=42, 2V(Meas)=35-45. | |
Calculated Properties of Strontio-orthojoaquinite |
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Bulk Density (Electron Density)=3.38 gm/cc note: Specific Gravity of Strontio-orthojoaquinite =3.62 gm/cc. |
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Fermion Index = 0.06 Boson Index = 0.94 |
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PEStrontio-orthojoaquinite = 110.54 barns/electron U=PEStrontio-orthojoaquinite x rElectron Density= 373.91 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Strontio-orthojoaquinite is Not Radioactive |
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Strontio-orthojoaquinite Classification |
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60.01.01b.02 (60)Cyclosilicate Four-Membered Rings | |
(60.01)as Titanosilicates | ||
(60.01.01b)Joaquinite group (Ortho-joaquinite subgroup) | ||
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09.CE.25 09 - SILICATES (Germanates) | |
09.C - Cyclosilicates | ||
09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe), | ||
Other Strontio-orthojoaquinite Information |
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NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |
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Links to other databases for Strontio-orthojoaquinite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - Ecole des Mines de Paris 4 - GeoScienceWorld 5 - Google Images 6 - Google Scholar 7 - MinDAT 8 - Mineralienatlas (Deutsch) 9 - Online Mineral Museum 10 - QUT Mineral Atlas 11 - Ruff.Info Search for Strontio-orthojoaquinite using: Visit our Advertisers for Strontio-orthojoaquinite : Ask about Strontio-orthojoaquinite here : Print or Cut-and-Paste your Strontio-orthojoaquinite Specimen Label here :
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