Sassolite Mineral Data

Sassolite Mineral Data
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General Sassolite Information

Help on Chemical Formula: Chemical Formula: H3BO3
Help on Composition: Composition: Molecular Weight = 61.83 gm
   Boron     17.48 %  B    56.30 % B2O3
   Hydrogen   4.89 %  H    43.70 % H2O
   Oxygen    77.63 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: H3BO3
Help on Environment: Environment: Volcanic fumaroles and hot springs.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1800
Help on Locality: Locality: Sasso and the Tuscan lagoons, between Volterra and Massa Marittima, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Sassolite + Pronunciation Say SASSOLITE
Help on Synonym: Synonym: Boric Acid
  ICSD 61365
  PDF 30-199
 

Sassolite Image

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Sassolite

Comments: Colorless, pseudohexagonal crystals of sassolite.
Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag

Sassolite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.998:1:0.9326
Help on Cell Dimensions: Cell Dimensions: a = 7.039, b = 7.053, c = 6.578, Z = 9; alpha = 92.583°, beta = 101.167°, gamma = 119.833° V = 277.65 Den(Calc)= 3.33
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.181(1), 6.05(0.3), 5.91(0.2),
Click Here for Large Sassolite Structure Window Crystal Structure:

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Gajhede M , Larsen S , Rettrup S , Acta Crystallographica, Section B , 42 (1986) p.545-552, Electron density of orthoboric acid determined by X-ray diffraction at, 105 K and ab initio calculations, Note: multipole refinement, Locality: synthetic

 

Physical Properties of Sassolite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: White, Gray, Yellow, Brown.
Help on Density: Density: 3.3 - 3.5, Average = 3.4
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 1 - Talc
Help on Luminescence: Luminescence: Fluorescent, Short UV=blue.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Sassolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.544 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.54 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1241,KPDmeas= 0.123,KC= 0.2696
Ncalc = 1.89 - 1.94
Help on Optical Data: Optical Data: Biaxial (-), a=1.34, b=1.456, g=1.459, bire=0.1190, 2V(Calc)=16, 2V(Meas)=5. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Sassolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Sassolite =3.37 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PESassolite = 0.35 barns/electron
U=PESassolite x rElectron Density= 1.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sassolite is Not Radioactive
 

Sassolite Classification
Help on Dana Class: Dana Class: 24.03.01.01 (24)Borates - Anhydrous
  (24.03)where (A)m (B)n [XO3]p
  (24.03.01)Dana Group
 
24.03.01.01 Sassolite H3BO3 P1 1
Help on Strunz Class: Strunz Class: 06.AA.05 06 - BORATES
  06.A - Monoborates
  06.AA -BO3, without additional anions; 1(D)
 
06.AA.05 Sassolite H3BO3 P1 1
 

Other Sassolite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Mason68)
Help on See Also: See Also: Links to other databases for Sassolite :
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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Sassolite

H3BO3
Dana No: 24.03.01.01 Strunz No: 06.AA.05
Locality:

 

Notes: