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Ezcurrite Mineral Data

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General Ezcurrite Information

Help on Chemical  Formula: Chemical Formula: Na4B10O17•7(H2O)
Help on Composition: Composition: Molecular Weight = 598.16 gm
   Sodium    15.37 %  Na   20.72 % Na2O
   Boron     18.07 %  B    58.19 % B2O3
   Hydrogen   2.36 %  H    21.08 % H2O
   Oxygen    64.19 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4B10O17•7(H2O)
Help on Environment: Environment: Probably formed from solutions derived from dehydration of borax in a discordant deposit in folded playa siltstones and sandstones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Tincalayu borax deposit, Salar del Hombre Muerto, Salta Province, Argentina. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Juan Manuel de Ezcurra (1900-1970), Manager of the Compania Productora de Boratos, S.A., owner of the Tincalayu deposit, Argentina.
Help on Name Pronunciation: Name Pronunciation: Ezcurrite + Pronunciation Say EZCURRITE
Help on Synonym: Synonym: ICSD 10278
  PDF 20-1084

Ezcurrite Image

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Comments: Translucent white crystalline massive ezcurrite.
Location: Tincalaya, Salta, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ezcurrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8984:1:0.6871
Help on Cell Dimensions: Cell Dimensions: a = 8.598, b = 9.57, c = 6.576, Z = 1; alpha = 102.75°, beta = 107.5°, gamma = 71.5° V = 477.31 Den(Calc)= 2.08
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.931(1), 3.079(0.38), 3.091(0.38),

Physical Properties of Ezcurrite

Help on Cleavage: Cleavage: {110} Perfect, {010} Good
Help on Color: Color: Colorless.
Help on Density: Density: 2.053
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white

Optical Properties of Ezcurrite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2446,KPDmeas= 0.2442,KC= 0.2362
Ncalc = 1.48
Help on Optical Data: Optical Data: Biaxial (-), a=1.468, b=1.507, g=1.529, bire=0.0610, 2V(Calc)=72, 2V(Meas)=73.5.

Calculated Properties of Ezcurrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.06 gm/cc
note: Specific Gravity of Ezcurrite =2.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEEzcurrite = 0.50 barns/electron
U=PEEzcurrite x rElectron Density= 1.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ezcurrite is Not Radioactive

Ezcurrite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.05)Dana Type
  (26.05.05)Dana Group Ezcurrite Na4B10O17•7(H2O) P1 1
Help on  Strunz Class: Strunz Class: 06.EB.10 06 - BORATES
  06.E - Pentaborates
  06.EB -Ino-pentaborates
06.EB.10 Ezcurrite Na4B10O17•7(H2O) P1 1

Other Ezcurrite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Ezcurrite :
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: Strunz No: 06.EB.10





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