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Montroyalite Mineral Data

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General Montroyalite Information

Help on Chemical  Formula: Chemical Formula: Sr4Al8(CO3)3(OH,F)26•10-11(H2O)
Help on Composition: Composition: Molecular Weight = 1,384.60 gm
   Strontium  25.31 %  Sr   29.93 % SrO
   Aluminum   15.59 %  Al   29.46 % Al2O3
   Hydrogen    2.48 %  H    22.12 % H2O
   Carbon      2.60 %  C     9.54 % CO2
   Oxygen     37.55 %  O
   Fluorine   16.47 %  F    16.47 % F
                -   %   F    -6.93 % -O=F2    
             ______        ______ 
             100.00 %      100.58 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Sr4Al8(CO3)3(OH)13F12•10.5(H2O)
Help on Environment: Environment: Cavities in a silicocarbonate sill.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Francon quarry, Montreal Island, Montreal, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Monteregian Hill, Mont Royal, prominent landmark in Montreal, Canada, from which the city�s name was derived.
Help on Name Pronunciation: Name Pronunciation: Montroyalite + Pronunciation Say MONTROYALITE
Help on Synonym: Synonym: IMA1985-001

Montroyalite Image

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Comments: Translucent micro spherical montroyalite on matrix.
Location: Francon Quarry, Montreal, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Montroyalite Crystallography

Help on Crystal System: Crystal System: Triclinic Space Group: Unk.
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.57(1), 3.283(0.55), 4(0.5),

Physical Properties of Montroyalite

Help on Cleavage: Cleavage: None
Help on Color: Color: White.
Help on Density: Density: 2.667
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Waxy
Help on Streak: Streak: white

Optical Properties of Montroyalite

Help on Optical Data: Optical Data: Biaxial (-), a=1.515, b=1.53, g=1.545, bire=0.0300, 2V(Calc)=88, 2V(Meas)=80-89.

Calculated Properties of Montroyalite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.60 gm/cc
note: Specific Gravity of Montroyalite =2.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEMontroyalite = 28.03 barns/electron
U=PEMontroyalite x rElectron Density= 73.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Montroyalite is Not Radioactive

Montroyalite Classification

Help on  Dana Class: Dana Class: 16b.05.03.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.05)with miscellaneous formulae
  (16b.05.03)Dana Group
16b.05.03.01 Montroyalite Sr4Al8(CO3)3(OH,F)26•10-11(H2O) Unk. Tri
Help on  Strunz Class: Strunz Class: 05.DB.35 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DB -With large and medium-sized cations
05.DB.35 Montroyalite Sr4Al8(CO3)3(OH,F)26•10-11(H2O) Unk. Tri

Other Montroyalite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Montroyalite :
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: 16b.05.03.01 Strunz No: 05.DB.35





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