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Carletonite

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Carleton University Coat of Arms
Formula:
KNa4Ca4Si8O18(CO3)4(OH,F) · H2O
System:
Tetragonal
Colour:
Colourless, light blue, ...
Lustre:
Vitreous
Hardness:
4 - 4½
Name:
Named after Carleton University, Ottawa, Canada, where it was first studied.

Classification of Carletonite

Approved
9.EB.20

9 : SILICATES (Germanates)
E : Phyllosilicates
B : Double nets with 4- and 6-membered rings
72.3.1.4

72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
3 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
17.4.8

17 : Silicates Containing other Anions
4 : Silicates with carbonates
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First Recorded Occurrence of Carletonite

Year of Discovery:
1971

Physical Properties of Carletonite

Vitreous
Colour:
Colourless, light blue, dark blue, or pink
Streak:
White
Hardness (Mohs):
4 - 4½

Crystallography of Carletonite

Crystal System:
Tetragonal
Cell Parameters:
a = 13.17Å, c = 16.69Å
Ratio:
a:c = 1 : 1.267
Unit Cell Volume:
V 2,894.86 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Carletonite

Type:
Uniaxial (-)
RI values:
nω = 1.521 nε = 1.517
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Carletonite

Formula:
KNa4Ca4Si8O18(CO3)4(OH,F) · H2O
Essential elements:
All elements listed in formula:
Common Impurities:
Ti,Al,Mg

Relationship of Carletonite to other Species

9.EB.05MacdonalditeBaCa4Si16O36(OH)2 · 10H2O
9.EB.05RhodesiteKHCa2Si8O19 · 5H2O
9.EB.10Delhayelite(Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2O
9.EB.10HydrodelhayeliteKCa2AlSi7O17(OH)2 · 6H2O
9.EB.15Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2O
17.4.1TilleyiteCa5(Si2O7)(CO3)2
17.4.2SpurriteCa5(SiO4)2(CO3)
17.4.3Paraspurrite
17.4.4ScawtiteCa7(Si3O9)2CO3 · 2H2O
17.4.5FukaliteCa4[Si2O6][CO3](OH)2
17.4.6MeioniteCa4Al6Si6O24CO3
17.4.7Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
17.4.9Iimoriite-(Y)Y2[SiO4][CO3]
17.4.10Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2O
17.4.11Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2O
17.4.12Lepersonnite-(Gd)Ca(Gd,Dy)2(UO2)24(SiO4)4(CO3)8(OH)24 · 48H2O
17.4.13AshburtonitePb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2O
17.4.14Surite(Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2
17.4.15Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2
17.4.16Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2

Other Names for Carletonite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Carletonite

Reference List:
Chao G.Y. (1971), Carletonite, KNa4Ca4Si8O18(CO3)4(F,OH) 7 H2O a new mineral from Mount St. Hilaire, Quebec. American Mineralogist: 56: 1855-1866; American Mineralogist, 56, 1855-1866.
Chao G.Y. (1972) The crystal structure of carletonite, KNa4Ca4Si8O18(CO3)4(F,OH)7 H2O, a double sheet silicate. American Mineralogist, 57, 765-778.

Internet Links for Carletonite

Specimens:
The following Carletonite specimens are currently listed for sale on minfind.com.

Localities for Carletonite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Chao G.Y. (1971), Carletonite, KNa4Ca4Si8O18(CO3)4(F,OH) 7 H2O a new mineral from Mount St. Hilaire, Quebec. American Mineralogist: 56: 1855-1866; American Mineralogist (1971): 56, 354; Chao G.Y. (1972), The crystal structure of carletonite, KNa4Ca4Si8O18(CO3)4(F,OH)7 H2O, a double sheet silicate. American Mineralogist: 57: 765-778.
Mineral and/or Locality  
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