Thomasclarkite-(Y) (original) (raw)

A valid IMA mineral species

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About Thomasclarkite-(Y)Hide

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Formula:

(Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2O

Colour:

Honey-yellow to white

Crystal System:

Monoclinic

Name:

Named in honor of Thomas Henry Clark (1893-1996), Professor of Geology, McGill University, Montreal, Quebec (Canada), noted for his studies of the geology of the St. Lawrence Lowlands. The suffix/modifier follows the Levinson rule, indicating that the predominant essential REE is yttrium.

This page provides mineralogical data about Thomasclarkite-(Y).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:7336:9

4a65ae21-951b-4632-bc95-172906d3c2dc

IMA Classification of Thomasclarkite-(Y)Hide

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IMA Formula:

NaY(HCO3)(OH)3 · 4H2O

Classification of Thomasclarkite-(Y)Hide

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5.DC.20

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
C : With large cations

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol Source Reference
Tcl-Y IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Thomasclarkite-(Y)Hide

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Transparency:

Transparent, Translucent

Colour:

Honey-yellow to white

Cleavage:

Perfect
Perfect on {010}.

Parting:

Parting on {101}.

Fracture:

Irregular/Uneven

Density:

2.30(2) g/cm3 (Measured) 2.34 g/cm3 (Calculated)

Optical Data of Thomasclarkite-(Y)Hide

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RI values:

_n_ω = 1.540(4) _n_ε = 1.400(2)

δ = 0.140

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of Thomasclarkite-(Y)Hide

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Mindat Formula:

(Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2O

Crystallography of Thomasclarkite-(Y)Hide

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Crystal System:

Monoclinic

Class (H-M):

2 - Sphenoidal

Cell Parameters:

a = 4.556 Å, b = 13.018 Å, c = 4.556 Å
β = 90.15°

Ratio:

a:b:c = 0.35 : 1 : 0.35

Morphology:

Blocky, pseudo-tetragonal crystals. Forms observed are the pedions {010} and {010}, sphenoids {111}, {111}, {111} and {111} and the pinacoids {101} and {101}.

Twinning:

Merohedral twinning on {101} is ubiquitous.

Crystal StructureHide

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ID Species Reference Link Year Locality Pressure (GPa) Temp (K)
0005579 Thomasclarkite-(Y) Grice J D, Gault R A (1998) Thomasclarkite-(Y), a new sodium - rare-earth-element bicarbonate mineral species from Mont Saint-Hilaire, Quebec The Canadian Mineralogist 36 1293-1300 1998 Mont Saint-Hilaire, Quebec, Canada 0 293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
12.97 Å (100)
6.52 Å (30)
4.57 Å (30)
4.32 Å (50)
3.223 Å (30)
3.133 Å (50)
2.593 Å (30)
2.035 Å (30)
2.016 Å (40)
1.844 Å (30)

Geological EnvironmentHide

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Type Occurrence of Thomasclarkite-(Y)Hide

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General Appearance of Type Material:

Individual, well-formed, blocky, white-to-yellow crystals up to 2 mm in length.

Place of Conservation of Type Material:

Canadian Museum of Nature, Ottawa, Ontario, Canada, 81553–81555.

Associated Minerals at Type Locality:

Synonyms of Thomasclarkite-(Y)Hide

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Other Language Names for Thomasclarkite-(Y)Hide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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5.DC. Gysinite-(Ce) PbCe(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC. Calcioancylite-(La) (LaCa)(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC. Gysinite-(La) PbLa(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.05 Kozoite-(La) (La,Nd)(CO3)(OH) Orth. m _m_2
5.DC.05 Calcioancylite-(Ce) (Ce,Ca,Sr)CO3(OH,H2O) Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.05 Calcioancylite-(Nd) Ca(Nd,La,Ce)(CO3)2(OH).H2O Mon. m : P m
5.DC.05 Unnamed (Ce-analogue of Kozoite-(La) and -(Nd)) (Ce,La)(CO3)(OH) Orth.
5.DC.05 Ancylite-(La) LaSr(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.05 Unnamed (La-analogue of Calcioancylite-(Ce)) (La,Ce,Nd,Ca,Sr)CO3(OH,H2O) Orth.
5.DC.05 Ancylite-(Ce) CeSr(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.05 Kozoite-(Nd) (Nd,La,Sm,Pr)(CO3)(OH) Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.05 Gysinite-(Nd) PbNd(CO3)2(OH) · H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.10 Kamphaugite-(Y) Ca(Y,REE)(CO3)2(OH) · H2O Tet. 422 : _P_41212
5.DC.15 Sheldrickite NaCa3(CO3)2F3 · H2O Trig. 3 : _P_32
5.DC.25 Peterbaylissite [Hg2]2+3[CO3]2(OH)2 · 4H2O Orth. m m m _(_2/_m_2/_m_2/m )
5.DC.30 Clearcreekite [Hg2]2+3[CO3]2(OH)2 · 4H2O Mon. 2/m : _P_21/b
5.DC.35 Niveolanite NaBe(CO3)(OH) · 2H2O Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/m c c

Fluorescence of Thomasclarkite-(Y)Hide

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Other InformationHide

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Notes:

Dissolves readily with strong effervesce in 10% HCl.

Health Risks:

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

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References for Thomasclarkite-(Y)Hide

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Localities for Thomasclarkite-(Y)Hide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Canada (TL)
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) (TL) Grice et al. (1998)
Norway
Nordland Narvik ⓘ Hundholmen Husdal (2019)