Mineralogy Database

Biringuccite Mineral Data

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General Biringuccite Information

Help on Chemical  Formula: Chemical Formula: Na2B5O8(OH)•(H2O)
Help on Composition: Composition: Molecular Weight = 263.05 gm
   Sodium    17.48 %  Na   23.56 % Na2O
   Boron     20.55 %  B    66.17 % B2O3
   Hydrogen   1.15 %  H    10.27 % H2O
   Oxygen    60.82 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2B5O8(OH)•(H2O)
Help on Environment: Environment: Scales on piping in a geothermal field.
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Larderello, Val di Cecina, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Vannoccio Biringuccio (1480-1538/9), alchemist and metallurgist, author of the Pirotechnia.
Help on Name Pronunciation: Name Pronunciation: Biringuccite + Pronunciation Say BIRINGUCCITE
Help on Synonym: Synonym: ICSD 6168
  PDF 35-421

Biringuccite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7064:1:3.1637
Help on Cell Dimensions: Cell Dimensions: a = 11.1955, b = 6.5607, c = 20.7566, Z = 8; beta = 93.891° V = 1,521.06 Den(Calc)= 2.30
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.32(1), 3.453(0.8), 5.17(0.6),

Physical Properties of Biringuccite

Help on Cleavage: Cleavage: {001} Good, {100} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.32
Help on Diaphaneity: Diaphaneity: Transparent
Help on Streak: Streak: white

Optical Properties of Biringuccite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2307,KPDmeas= 0.2287,KC= 0.222
Ncalc = 1.51
Help on Optical Data: Optical Data: Biaxial (-), a=1.496, b=1.539, g=1.557, bire=0.0610, 2V(Calc)=64, 2V(Meas)=62.7.

Calculated Properties of Biringuccite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Biringuccite =2.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEBiringuccite = 0.53 barns/electron
U=PEBiringuccite x rElectron Density= 1.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Biringuccite is Not Radioactive

Biringuccite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.05)Dana Type
  (26.05.07)Dana Group Biringuccite Na2B5O8(OH)•(H2O) P 21/c 2/m
Help on  Strunz Class: Strunz Class: 06.EC.05 06 - BORATES
  06.E - Pentaborates
  06.EC -Phyllo-pentaborates
06.EC.05 Biringuccite Na2B5O8(OH)•(H2O) P 21/c 2/m
06.EC.05 Nasinite Na2B5O8(OH)•2(H2O) P na21 mm2

Other Biringuccite 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 Biringuccite :
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.EC.05





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