Montroyalite Mineral Data + Say MONTROYALITE


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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 IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Synonym: Synonym: IMA1985-001
 

Montroyalite Image

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Montroyalite

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: TriclinicSpace 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 Diaphaniety: Diaphaniety: 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 Gladstone-Dale: Gladstone-Dale: CI meas= 0.042 (Good) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1987,KC= 0.2074
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:

relectron=2.60 gm/cc
note: rMontroyalite =2.67 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01818
Boson Index = 0.98182
Help on Photoelectric: Photoelectric:

PEMontroyalite = 28.03 barns/electron
U=PEMontroyalite x relectron= 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.5.3.1 (16b)Carbonates - Hydroxyl or Halogen
  (16b.5)with miscellaneous formulae
  (16b.5.3)Dana Group
 
16b.5.3.1 Montroyalite Sr4Al8(CO3)3(OH,F)26·10-11(H2O) Unk. Tri
Help on  Strunz Class: Strunz Class: V/E.08-80 V - Nitrates, Carbonates and Borates
  V/E - Water-bearing carbonates with unfamiliar anions
  V/E.08 - Strontiodresserite - Dundasite series
 
V/E.08-05 Thomasclarkite-(Y)! (Na,Ce)(Y,REE)(HCO3)(OH)3·4(H2O) P 2 2
 
V/E.08-10 Kamphaugite-(Y) Ca(Y,REE)(CO3)2(OH)2·3(H2O) P 41212 4 2 2
 
V/E.08-20 Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) P mmm 2/m 2/m 2/m
 
V/E.08-25 Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) Pm m
 
V/E.08-28 Ancylite-(La)! Sr(La,Ce)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m
 
V/E.08-30 Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m
 
V/E.08-40 Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) Pmcn 2/m 2/m 2/m
 
V/E.08-50 Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m
 
V/E.08-60 Dresserite BaAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m
 
V/E.08-70 Hydrodresserite BaAl2(CO3)2(OH)4·3(H2O) P1 1
 
V/E.08-80 Montroyalite Sr4Al8(CO3)3(OH,F)26·10-11(H2O) Unk. Tri
 
V/E.08-90 Dundasite PbAl2(CO3)2(OH)4·(H2O) Pbmm 2/m 2/m 2/m
 
V/E.08-95 Petterdite! PbCr2(CO3)2(OH)4·H2O Pbnm 2/m 2/m 2/m
 
V/E.08-100 Barstowite Pb4(CO3)Cl6·(H2O) P 21/m 2/m
 

Other Montroyalite Information

Help on References: References: 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Montroyalite

Sr4Al8(CO3)3(OH,F)26·10-11(H2O)
Dana No: 16b.5.3.1 Strunz No: V/E.08-80
Locality:

 

Notes:

 

 
   
 
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