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Sanbornite Mineral Data + |
General Sanbornite Information |
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| BaSi2O5 | |||
| Molecular Weight = 273.50 gm | |||
| Barium 50.21 % Ba 56.06 % BaO | |||
| Silicon 20.54 % Si 43.94 % SiO2 | |||
| Oxygen 29.25 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Ba(Si2O5) | |||
| beta-BaSi2O5 is a high temperature phase. Major component of Ba-silicate assemblages at or near fringes of large granite intrusives. | |||
| Valid Species (Pre-IMA) 1932 | |||
| Incline sanbornite deposit, Truball Peak, 4 miles WNW of Incline, Mariposa Co, California. Link to MinDat.org Location Data. | |||
| Named for Frank B. Sanborn, (1862-1936), Mineralogist, California Department of Natural Resources. | |||
| ICSD 100313 | |||
| PDF 26-176 | |||
Sanbornite Image | |||
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Sanbornite Crystallography |
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| a:b:c =0.602:1:1.7594 | |||
| a = 4.63, b = 7.69, c = 13.53, Z = 4; V = 481.73 Den(Calc)= 3.77 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb | |||
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Mouse |
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Physical Properties of Sanbornite |
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| [???] Perfect | |||
| Colorless, White. | |||
| 3.74 | |||
| Transparent to Translucent | |||
| Platy - Sheet forms (e.g. micas). | |||
| 5 - Apatite | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Sanbornite |
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| CI meas= -0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1624,KPDmeas= 0.1637,KC= 0.1632 |
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| Biaxial (-), a=1.597, b=1.616, g=1.624, bire=0.0270, 2V(Calc)=64, 2V(Meas)=66. | |||
Calculated Properties of Sanbornite |
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relectron=3.42 gm/cc |
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| Fermion Index = 0.09921 Boson Index = 0.90079 |
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PESanbornite = 222.81 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sanbornite is Not Radioactive |
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Sanbornite Classification |
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| 74.3.4.1 (74)Phyllosilicate Modulated Layers | |||
| (74.3)with joined strips | |||
| (74.3.4)Ba phyllosilicates | |||
| VIII/H.02-50 VIII - Silicates | |||
| VIII/H - Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others | |||
| VIII/H.02 - Davanite - Dalyite series | |||
Other Sanbornite Information |
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| NAME( MinRec) PHYS. PROP.(Larousse des Mineraux,1981) OPTIC PROP.(Dana8) | |||
| Links to other databases for Sanbornite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Sanbornite using: Visit our Advertisers for Sanbornite : Translate Sanbornite Mineral Data : Ask about Sanbornite here : Print or Cut-and-Paste your Sanbornite Specimen Label here :
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