Mineralogy Database

Mascagnite Mineral Data

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General Mascagnite Information

Help on Chemical  Formula: Chemical Formula: (NH4)2SO4
Help on Composition: Composition: Molecular Weight = 132.14 gm
   Hydrogen   6.10 %  H      -   % Calc as (NH4)2O
   Sulfur    24.27 %  S    60.59 % SO3
   Nitrogen  21.20 %  N    39.41 % (NH4)2O
   Oxygen    48.43 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)2(SO4)
Help on Environment: Environment: Found in fumeroles.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1779
Help on Locality: Locality: Vesuvius, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Paolo Mascagni (1752-1815), Italian anatomist, University of Siena who first described the natural salt.
Help on Name Pronunciation: Name Pronunciation: Mascagnite + Pronunciation Say MASCAGNITE
Help on Synonym: Synonym: ICSD 200905
  PDF 44-1413
 

Mascagnite Image

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  Mascagnite

Comments: White, botryoidal mascagnite.
Location: Carola Mine, Freital, Dresden, Saxony, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

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  Lecontite   Mascagnite

Comments: SEM BSE image of fine-grained lecontite (Le) and thenardite, occupying the space between mascagnite (M) crystals. CanMin 47:573.
Location: Coal-waste heap in Avion, northern France, that has been undergoing subsurface combustion for several decades. Scale: See Image.
© Canadian Mineralogist

Mascagnite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.2985:1:1.7747
Help on Cell Dimensions: Cell Dimensions: a = 7.782, b = 5.993, c = 10.636, Z = 4; V = 496.04 Den(Calc)= 1.77
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.33(1), 4.39(0.65), 3.06(0.55),
 

Physical Properties of Mascagnite

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Colorless, Gray, Grayish yellow, Yellow, White.
Help on Density: Density: 1.768
Help on Diaphaneity: Diaphaneity: Transparent to Opaque
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite).
Help on Habit: Habit: Water Soluble - Water soluble mineral.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white
 

Optical Properties of Mascagnite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -1.771 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -1.767 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2968,KPDmeas= 0.2971,KC= 0.1072
Ncalc = 1.19
Help on Optical Data: Optical Data: Biaxial (+), a=1.52, b=1.523, g=1.533, bire=0.0130, 2V(Calc)=58, 2V(Meas)=52.2.
 

Calculated Properties of Mascagnite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.88 gm/cc
note: Specific Gravity of Mascagnite =1.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.21
Boson Index = 0.79
Help on Photoelectric: Photoelectric: PEMascagnite = 1.49 barns/electron
U=PEMascagnite x rElectron Density= 2.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mascagnite is Not Radioactive
 

Mascagnite Classification

Help on  Dana Class: Dana Class: 28.02.01.01 (28)Anhydrous Acid and Sulfates
  (28.02)(A+)2 XO4
  (28.02.01)Dana Group
 
28.02.01.01 Mascagnite (NH4)2SO4 P nma 2/m 2/m 2/m
 
28.02.01.02 Arcanite K2SO4 Pmcn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.AD.05 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AD -With only large cations
 
07.AD.05 Arcanite K2SO4 Pmcn 2/m 2/m 2/m
 
07.AD.05 Mascagnite (NH4)2SO4 P nma 2/m 2/m 2/m
 

Other Mascagnite Information

Help on References: References: NAME( Dana8) 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 Mascagnite :
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
15 - WWW-MINCRYST

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Mascagnite

(NH4)2SO4
Dana No: 28.02.01.01 Strunz No: 07.AD.05
Locality:

 

Notes:

 

 
   
 


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