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Thomasclarkite-(Y)

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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© 2005 DM

Show Thomasclarkite-(Y) Photos (26)



Formula:
(Na,Ce)(Y,REE)(HCO
 
3
)(OH)
 
3
 · 4H
 
2
O
System:MonoclinicColour:Honey-yellow to white
Lustre:VitreousHardness:2 - 3
Name:Named after Thomas Henry Clark (1893-1996), McGill University, Montreal, Quebec (Canada), noted for his studies of the geology of the St. Lawrence Lowlands.
This page provides mineralogical data about Thomasclarkite-(Y).

Classification of Thomasclarkite-(Y)

IMA status:Approved 1997
Strunz 8th edition ID:5/E.08-05
Nickel-Strunz 10th (pending) edition ID:5.DC.20

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations
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Type Occurrence of Thomasclarkite-(Y)

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

Physical Properties of Thomasclarkite-(Y)

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Honey-yellow to white
Hardness (Mohs):2 - 3

Crystallography of Thomasclarkite-(Y)

Crystal System:Monoclinic

Optical Data of Thomasclarkite-(Y)

Type:Uniaxial (-)
RI values: nω = 1.540 nε = 1.400
Maximum Birefringence:δ = 0.140

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

Chemical Properties of Thomasclarkite-(Y)

Formula:
(Na,Ce)(Y,REE)(HCO
 
3
)(OH)
 
3
 · 4H
 
2
O
Essential elements:C, H, Na, O, Y
All elements listed in formula:C, Ce, H, Na, O, Y

Relationship of Thomasclarkite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.DC.05Ancylite-(Ce)
SrCe(CO
 
3
)
 
2
(OH) · H
 
2
O
5.DC.05Calcioancylite-(Ce)
(Ca,Sr)Ce(CO
 
3
)
 
2
(OH) · H
 
2
O
5.DC.05Calcioancylite-(Nd)
Ca(Nd,La,Ce)(CO
 
3
)
 
2
(OH)
 
.
H
 
2
O
5.DC.05Gysinite-(Nd)
Pb(Nd,La)(CO
 
3
)
 
2
(OH) · H
 
2
O
5.DC.05Ancylite-(La)
Sr(La,Ce)(CO
 
3
)
 
2
(OH) · H
 
2
O
5.DC.05Kozoite-(Nd)
(Nd,La,Sm,Pr)(CO
 
3
)(OH)
5.DC.05Kozoite-(La)
(La,Nd)(CO
 
3
)(OH)
5.DC.10Kamphaugite-(Y)
Ca(Y,REE)(CO
 
3
)
 
2
(OH) · H
 
2
O
5.DC.15Sheldrickite
NaCa
 
3
(CO
 
3
)
 
2
F
 
3
 · H
 
2
O
5.DC.25Peterbaylissite
(Hg
+
2
)
 
1.5
(CO
 
3
)(OH) · 2H
 
2
O
5.DC.30Clearcreekite
(Hg
+
2
)
 
1.5
(CO
 
3
)(OH) · 2H
 
2
O
5.DC.35Niveolanite
NaBe(CO
 
3
)(OH) · 2H
 
2
O

Other Names for Thomasclarkite-(Y)

Synonyms:
IMA1997-047
Other Languages:
German:Thomasclarkit-(Y)
Russian:Томаскларкит-(Y)

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 Thomasclarkite-(Y)

Reference List:

- +
Canadian Mineralogist (1998): 36: 1293-1300.

Internet Links for Thomasclarkite-(Y)

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  • Raman and XRD data at RRUFF project[Link Broken?]
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  • Thomasclarkite-(Y) details from Handbook of Mineralogy (PDF)[Link Broken?]
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    • Localities for Thomasclarkite-(Y)

    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
     
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		Grice, J.D. & Gault, R.A. (1998), Thomasclarkite-(Y), a new sodium-rare-earth-element bicarbonate mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist: 36: 1295-1301.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 18th Jun 2011 15:27:55
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