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Boussingaultite Mineral Data

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General Boussingaultite Information

Help on Chemical  Formula: Chemical Formula: (NH4)2Mg(SO4)2•6(H2O)
Help on Composition: Composition: Molecular Weight = 360.60 gm
   Magnesium   6.74 %  Mg   11.18 % MgO
   Hydrogen    2.24 %  H      -   % Calc as (NH4)2O
   Hydrogen    3.35 %  H    29.98 % H2O
   Sulfur     17.78 %  S    44.41 % SO3
   Nitrogen    7.77 %  N    14.44 % (NH4)2O
   Oxygen     62.12 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)2Mg(SO4)2•6(H2O)
Help on Environment: Environment: Sublimate formed under fumarolic conditions.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1864
Help on Locality: Locality: Travale, Val di Cecina, and Larderello, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jean-Baptiste Joseph Dieudonne Boussingault (1802-1887), French chemist, Lyon University, Lyon, France.
Help on Name Pronunciation: Name Pronunciation: Boussingaultite + Pronunciation Say BOUSSINGAULTITE
Help on Synonym: Synonym: ICSD 25713
  PDF 35-771

Boussingaultite Image

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Comments: White, crystalline aggregates boussingaultite.
Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Boussingaultite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7382:1:0.4932
Help on Cell Dimensions: Cell Dimensions: a = 9.28, b = 12.57, c = 6.2, Z = 2; beta = 107.1° V = 691.26 Den(Calc)= 1.73
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.22(1), 2.085(0.95), 5.11(0.85),

Physical Properties of Boussingaultite

Help on Cleavage: Cleavage: {???} Perfect, {???} Distinct
Help on Color: Color: Colorless, Yellow pink, Light yellow, Pink.
Help on Density: Density: 1.7
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white

Optical Properties of Boussingaultite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.376 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.352 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2742,KPDmeas= 0.2791,KC= 0.2029
Ncalc = 1.34 - 1.35
Help on Optical Data: Optical Data: Biaxial (+), a=1.4716, b=1.473, g=1.4786, bire=0.0070

Calculated Properties of Boussingaultite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.82 gm/cc
note: Specific Gravity of Boussingaultite =1.73 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEBoussingaultite = 1.31 barns/electron
U=PEBoussingaultite x rElectron Density= 2.40 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Boussingaultite is Not Radioactive

Boussingaultite Classification

Help on  Dana Class: Dana Class: (29)Hydrated Acid and Sulfates
  (29.03)where (A+)2 B (XO4)2 � x(H2O)
  (29.03.07)Mohrite Group (Ammonia bearing) Mohrite (NH4)2Fe(SO4)2•6(H2O) P 21/c 2/m Boussingaultite (NH4)2Mg(SO4)2•6(H2O) P 21/a 2/m Nickelboussingaultite (NH4)2(Ni,Mg)(SO4)2•6(H2O) P 21/a 2/m
Help on  Strunz Class: Strunz Class: 07.CC.60 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CC -With medium-sized and large cations
07.CC.60 Boussingaultite (NH4)2Mg(SO4)2•6(H2O) P 21/a 2/m
07.CC.60 Cyanochroite K2Cu(SO4)2•6(H2O) P 21/a 2/m
07.CC.60 Mohrite (NH4)2Fe(SO4)2•6(H2O) P 21/c 2/m
07.CC.60 Picromerite K2Mg(SO4)2•6(H2O) P 21/a 2/m
07.CC.60 Nickelboussingaultite (NH4)2(Ni,Mg)(SO4)2•6(H2O) P 21/a 2/m

Other Boussingaultite 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 Boussingaultite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 07.CC.60





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