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Carletonite

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Big Photo

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© Rob Lavinsky

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Formula:
KNa
 
4
Ca
 
4
Si
 
8
O
 
18
(CO
 
3
)
 
4
(OH,F) · H
 
2
O
System:TetragonalColour:Colourless, light blue, ...
Lustre:VitreousHardness:4 - 4½
Name:
Named after Carleton University, Ottawa, Canada, where it was first studied.


Visit gemdat.org for gemological information about Carletonite. Currently in public beta-test.

Classification of Carletonite

IMA status:Approved
Strunz 8th edition ID:8/H.07-10
Nickel-Strunz 10th (pending) edition ID:9.EB.20

9 : SILICATES (Germanates)
E : Phyllosilicates
B : Double nets with 4- and 6-membered rings
Dana 8th edition ID: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
Hey's CIM Ref.:17.4.8

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

Type Locality:Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
Year of Discovery:1971

Physical Properties of Carletonite

Lustre: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:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
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
Maximum Birefringence:δ = 0.004

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Carletonite

Formula:
KNa
 
4
Ca
 
4
Si
 
8
O
 
18
(CO
 
3
)
 
4
(OH,F) · H
 
2
O
Essential elements:C, Ca, H, K, Na, O, Si
All elements listed in formula:C, Ca, F, H, K, Na, O, Si
Common Impurities:Ti,Al,Mg

Relationship of Carletonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.EB.05Macdonaldite
BaCa
 
4
Si
 
16
O
 
36
(OH)
 
2
 · 10H
 
2
O
9.EB.05Rhodesite
KHCa
 
2
Si
 
8
O
 
19
 · 5H
 
2
O
9.EB.10Delhayelite
(Na,K)
 
10
Ca
 
5
Al
 
6
Si
 
32
O
 
80
(Cl
 
2
,F
 
2
,SO
 
4
)
 
3
 · 18H
 
2
O
9.EB.10Hydrodelhayelite
KCa
 
2
AlSi
 
7
O
 
17
(OH)
 
2
 · 6H
 
2
O
9.EB.15Monteregianite-(Y)
(Na,K)
 
6
(Y,Ca)
 
2
Si
 
16
O
 
38
 · 10H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
17.4.1Tilleyite
Ca
 
5
(Si
 
2
O
 
7
)(CO
 
3
)
 
2
17.4.2Spurrite
Ca
 
5
(SiO
 
4
)
 
2
(CO
 
3
)
17.4.3Paraspurrite
17.4.4Scawtite
Ca
 
7
(Si
 
3
O
 
9
)
 
2
CO
 
3
 · 2H
 
2
O
17.4.5Fukalite
Ca
 
4
[Si
 
2
O
 
6
][CO
 
3
](OH)
 
2
17.4.6Meionite
Ca
 
4
Al
 
6
Si
 
6
O
 
24
CO
 
3
17.4.7Cancrinite
(Na,Ca,☐)
 
8
(Al
 
6
Si
 
6
O
 
24
)(CO
 
3
,SO
 
4
)
 
2
 · 2H
 
2
O
17.4.9Iimoriite-(Y)
Y
 
2
[SiO
 
4
][CO
 
3
]
17.4.10Kainosite-(Y)
Ca
 
2
(Y,Ce)
 
2
(Si
 
4
O
 
12
)(CO
 
3
) · H
 
2
O
17.4.11Caysichite-(Y)
Ca
 
2
Y
 
2
Si
 
4
O
 
10
(CO
 
3
)
 
3
 · 4H
 
2
O
17.4.12Lepersonnite-(Gd)
Ca(Gd,Dy)
 
2
(UO
 
2
)
 
24
(SiO
 
4
)
 
4
(CO
 
3
)
 
8
(OH)
 
24
 · 48H
 
2
O
17.4.13Ashburtonite
Pb
 
4
Cu
 
4
(Si
 
4
O
 
12
)(HCO
 
3
)
 
4
(OH)
 
3
Cl · H
 
2
O
17.4.14Surite
(Pb,Ca)
 
3
(Al,Fe
2+
 
,Mg)
 
2
((Si,Al)
 
4
O
 
10
)(CO
 
3
)
 
2
(OH)
 
2
17.4.15Tundrite-(Ce)
Na
 
2
Ce
 
2
Ti(SiO
 
4
)(CO
 
3
)
 
2
O
 
2
17.4.16Tundrite-(Nd)
Na
 
3
(Nd,La)
 
4
(Ti,Nb)
 
2
(SiO
 
4
)
 
2
(CO
 
3
)
 
3
O
 
4
(OH) · 2H
 
2
O

Other Names for Carletonite

Synonyms:
IMA1969-016
Other Languages:
German:Carletonit
Russian:Карлетонит
Spanish:Carletonita

Other Information

Health Warning: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

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Carletonite details from Handbook of Mineralogy (PDF)
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    • Localities for Carletonite

    The 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.
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    (TL) indicates type locality. ? 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
        • Rouville 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.
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