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Sborgite Mineral Data

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General Sborgite Information

Help on Chemical  Formula: Chemical Formula: NaB5O6(OH)4•3(H2O)
Help on Composition: Composition: Molecular Weight = 295.11 gm
   Sodium     7.79 %  Na   10.50 % Na2O
   Boron     18.32 %  B    58.98 % B2O3
   Hydrogen   3.42 %  H    30.52 % H2O
   Oxygen    70.48 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaB5O6(OH)4•3(H2O)
Help on Environment: Environment: Pipe scale at a reduction works for borates from hot spring lagoons, between 32 deg C and 60 deg C.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Larderello, Val di Cecina, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Umberto Sborgi (1883-1955), Italian chemist, University of Milan, Milan, Italy.
Help on Name Pronunciation: Name Pronunciation: Sborgite Say SBORGITE
Help on Synonym: Synonym: ICSD 2849
  PDF 24-1056

Sborgite Image

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Comments: Pale grayish-green massive sborgite.
Location: Furnace Creek borate area, Death Valley, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sborgite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6788:1:0.8311
Help on Cell Dimensions: Cell Dimensions: a = 11.1, b = 16.35, c = 13.59, Z = 8; beta = 113.167° V = 2,267.50 Den(Calc)= 1.73
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.6(1), 3.3(0.77), 3.2(0.76),

Physical Properties of Sborgite

Help on Color: Color: Colorless.
Help on Density: Density: 1.713
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Sborgite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.069 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2651,KPDmeas= 0.2678,KC= 0.2505
Ncalc = 1.43
Help on Optical Data: Optical Data: Biaxial (+), a=1.431, b=1.438, g=1.507, bire=0.0760, 2V(Calc)=38, 2V(Meas)=35.

Calculated Properties of Sborgite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.76 gm/cc
note: Specific Gravity of Sborgite =1.73 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PESborgite = 0.43 barns/electron
U=PESborgite x rElectron Density= 0.75 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sborgite is Not Radioactive

Sborgite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.05)Dana Type
  (26.05.01)Dana Group Sborgite NaB5O6(OH)4•3(H2O) C 2/c 2/m
Help on  Strunz Class: Strunz Class: 06.EA.05 06 - BORATES
  06.E - Pentaborates
  06.EA -Neso-pentaborates
06.EA.05 Sborgite NaB5O6(OH)4•3(H2O) C 2/c 2/m

Other Sborgite 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 Sborgite :
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.EA.05





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