General Aristarainite Information![]() Na2MgB12O20•8(H2O) |
![]() Molecular Weight = 628.08 gm |
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Sodium 7.32 % Na 9.87 % Na2O |
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Magnesium 3.87 % Mg 6.42 % MgO |
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Boron 20.65 % B 66.51 % B2O3 |
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Hydrogen 1.93 % H 17.21 % H2O |
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Oxygen 66.23 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Na2MgB12O20•6(H2O) |
![]() Playa evaporite sequence. |
![]() Approved IMA 1974 |
![]() Tincalayu borax deposit, Salar del Hombre Muerto, Salta Province, Argentina. Link to MinDat.org Location Data. |
![]() Named for Lorenzo Francisco Aristarain (1926- ), Argentine mineralogist specializing in borate deposits, La Plata University, Buenos Aires, Argentina. |
![]() Aristarainite + Pronunciation |
![]() ![]() ICSD 10417 |
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PDF 26-1379 |
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Aristarainite Crystallography![]() a:b:c =2.5111:1:1.039 |
![]() a = 18.886, b = 7.521, c = 7.815, Z = 2; beta = 97.72° V = 1,099.99 Den(Calc)= 1.90 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a |
![]() By Intensity(I/Io): 7.74(1), 2.579(0.19), 3.037(0.13), |
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| Physical Properties of Aristarainite![]() {001} Perfect, {100} Perfect, {110} Good |
![]() Colorless. |
![]() 2.027 |
![]() Transparent |
![]() 3.5 - Copper Penny |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Aristarainite![]() CI meas= -0.062 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.133 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.264,KPDmeas= 0.2475,KC= 0.2331 Ncalc = 1.44 - 1.47 ![]() Biaxial (+), a=1.484, b=1.498, g=1.523, bire=0.0390, 2V(Calc)=76, 2V(Meas)=70. |
| Calculated Properties of Aristarainite![]() Bulk Density (Electron Density)=2.03 gm/cc |
note: Specific Gravity of Aristarainite =2.03 gm/cc. ![]() Fermion Index = 0.04 |
Boson Index = 0.96 ![]() PEAristarainite = 0.48 barns/electron |
U=PEAristarainite x rElectron Density= 0.98 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Aristarainite is Not Radioactive | Aristarainite Classification![]() 26.06.05.01 (26)Hydrated Borates Containing Hydroxyl or Halogen |
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(26.06)Dana Type |
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(26.06.05)Dana Group |
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![]() 06.FB.05 06 - BORATES |
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06.F - Hexaborates |
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06.FB -Ino-hexaborates |
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| Other Aristarainite Information![]() NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Aristarainite : |
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 15 - WWW-MINCRYST Search for Aristarainite using: Visit our Advertisers for Aristarainite : A Bijoux Google Search for AristarainiteAdam's Minerals Google Search for Aristarainite Cape Minerals Google Search for Aristarainite Dakota Matrix Minerals Google Search for Aristarainite Excalibur Mineral Corp. Google Search for Aristarainite Exceptional Minerals Google Search for Aristarainite John Betts Fine Minerals Search for Aristarainite McDougall Minerals Google Search for Aristarainite Mineral News Website Link Rock and Mineral Shows Google Search for Aristarainite Weinrich Minerals, Inc. Google Search for Aristarainite Ask about Aristarainite here : Print or Cut-and-Paste your Aristarainite Specimen Label here :
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