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Barylite Mineral Data |
General Barylite Information |
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BaBe2Si2O7 | ||
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Molecular Weight = 323.52 gm | ||
Barium 42.45 % Ba 47.39 % BaO | |||
Beryllium 5.57 % Be 15.46 % BeO | |||
Silicon 17.36 % Si 37.14 % SiO2 | |||
Oxygen 34.62 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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BaBe2(Si2O7) | ||
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Alkalic pegmatites and miarolitic cavities. Also in nephelene syenites and other alkalic intrusions. | ||
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Valid Species (Pre-IMA) 1876 | ||
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Langbanshyttan, Vermland, Sweden. Link to MinDat.org Location Data. | ||
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Named from the Greek for "heavy", in allusion to its high specific gravity. | ||
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Barylite ![]() |
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ICSD 24-615 | ||
PDF 20-119 | |||
Barylite Image | |||
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Barylite Crystallography |
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a:b:c =0.8429:1:0.4011 | ||
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a = 9.82, b = 11.65, c = 4.673, Z = 4; V = 534.61 Den(Calc)= 4.02 | ||
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Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Pn21a | ||
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By Intensity(I/Io): 2.92(1), 3.38(1), 3.02(0.8), | ||
Physical Properties of Barylite |
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{001} Perfect, {100} Perfect | ||
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Bluish, Colorless, White. | ||
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4.02 - 4.07, Average = 4.04 | ||
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Transparent | ||
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Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
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Platy - Sheet forms (e.g. micas). | ||
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6-7 - Orthoclase-Quartz | ||
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Non-fluorescent. | ||
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Vitreous (Glassy) | ||
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Nonmagnetic | ||
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white | ||
Optical Properties of Barylite |
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CI meas= 0.018 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1729,KPDmeas= 0.1718,KC= 0.175 Ncalc = 1.7 - 1.71 |
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Biaxial (-), a=1.69, b=1.69-1.7, g=1.7, bire=0.0100, 2V(Calc)=0, 2V(Meas)=40.45. Dispersion weak to moderate, r > v. | ||
Calculated Properties of Barylite |
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Bulk Density (Electron Density)=3.68 gm/cc note: Specific Gravity of Barylite =4.02 gm/cc. |
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Fermion Index = 0.13 Boson Index = 0.87 |
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PEBarylite = 186.73 barns/electron U=PEBarylite x rElectron Density= 686.81 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Barylite is Not Radioactive |
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Barylite Classification |
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55.01.01.01 (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions | ||
(55.01)with cations in [4] and higher coordination | |||
(55.01.01)Dana Group | |||
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09.BB.15 09 - SILICATES (Germanates) | ||
09.B - Sorosilicates | |||
09.BB -Si2O7 groups, without non-tetrahedral anions; | |||
Other Barylite Information |
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NAME( Ford32) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Barylite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 5 - EUROmin Project 6 - Ecole des Mines de Paris 7 - Franklin Minerals(Dunn) 8 - Franklin Minerals(Palache) 9 - GeoScienceWorld 10 - Google Images 11 - Google Scholar 12 - Handbook of Mineralogy (MinSocAm) 13 - Handbook of Mineralogy (UofA) 14 - MinDAT 15 - Mineralienatlas (Deutsch) 16 - Online Mineral Museum 17 - QUT Mineral Atlas 18 - Ruff.Info 19 - WWW-MINCRYST Search for Barylite using: Visit our Advertisers for Barylite : Ask about Barylite here : Print or Cut-and-Paste your Barylite Specimen Label here :
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