Mineralogy Database

Ammonioborite Mineral Data

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General Ammonioborite Information

Help on Chemical  Formula: Chemical Formula: (NH4)2B10O16•5(H2O)
Help on Composition: Composition: Molecular Weight = 490.24 gm
   Boron     22.05 %  B    71.00 % B2O3
   Hydrogen   1.64 %  H      -   % Calc as (NH4)2O
   Hydrogen   2.06 %  H    18.37 % H2O
   Nitrogen   5.71 %  N    10.62 % (NH4)2O
   Oxygen    68.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)2B10O16•5(H2O)
Help on Environment: Environment: Boric acid-rich fumarolic lagoons.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1931
Help on Locality: Locality: Larderello, Val di Cecina, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition, ammonium borate.
Help on Name Pronunciation: Name Pronunciation: Ammonioborite + Pronunciation Say AMMONIOBORITE
Help on Synonym: Synonym: ICSD 23532
  PDF 12-637

Ammonioborite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.6186:1:1.1979
Help on Cell Dimensions: Cell Dimensions: a = 25.27, b = 9.65, c = 11.56, Z = 6; beta = 94.287° V = 2,811.08 Den(Calc)= 1.74
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): 3.09(1), 3.16(1), 5.7(0.6),

Physical Properties of Ammonioborite

Help on Cleavage: Cleavage: None
Help on Color: Color: White.
Help on Density: Density: 1.765
Help on Diaphaneity: Diaphaneity: Translucent
Help on Streak: Streak: white

Optical Properties of Ammonioborite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.314 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.333 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2868,KPDmeas= 0.2827,KC= 0.2151
Ncalc = 1.37 - 1.38
Help on Optical Data: Optical Data: Biaxial (+), a=1.47, b=1.487, g=1.54, bire=0.0700, 2V(Calc)=62, 2V(Meas)=60.

Calculated Properties of Ammonioborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.80 gm/cc
note: Specific Gravity of Ammonioborite =1.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.1
Boson Index = 0.9
Help on Photoelectric: Photoelectric: PEAmmonioborite = 0.33 barns/electron
U=PEAmmonioborite x rElectron Density= 0.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ammonioborite is Not Radioactive

Ammonioborite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.05)Dana Type
  (26.05.03)Dana Group Ammonioborite (NH4)2B10O16•5(H2O) C 2/c 2/m
Help on  Strunz Class: Strunz Class: 06.EA.15 06 - BORATES
  06.E - Pentaborates
  06.EA -Neso-pentaborates
06.EA.15 Ammonioborite (NH4)2B10O16•5(H2O) C 2/c 2/m

Other Ammonioborite 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 Ammonioborite :
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.15





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