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Adamsite-(Y)

A valid IMA mineral species
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About Adamsite-(Y)Hide

07560570017271928902858.jpg
Frank Dawson Adams
Formula:
NaY[CO3]2 · 6H2O
Colour:
Colourless, white, pale pink, pale purple.
Lustre:
Pearly
Hardness:
3
Specific Gravity:
2.27
Crystal System:
Triclinic
Name:
Named in honor of Professor Frank Dawson Adams (1859–1942), McGill University, Montreal, Canada, geologist and petrologist, who studied the Monteregian Hills, one of which is Mont Saint-Hilaire. The suffix/modifier indicates that the predominant essential REE is yttirum.
Chemically similar to shomiokite-(Y), lecoqite-(Y), and horváthite-(Y); also to thomasclarkite-(Y) (bicarbonate).

The structure is layered; one carbonate group is perpendicular, and the other parallel to the layering. In the crystal structure there are NaYCO3 groups separated by layers of H2O. The neighbouring water layers have only H-bond linkage, which results in perfect cleavage (Grice et al., 2000).


Unique IdentifiersHide

Mindat ID:
7088
Long-form identifier:
mindat:1:1:7088:7

Similar NamesHide

AdamiteA valid IMA mineral species - grandfatheredZn2(AsO4)(OH)
AdamsiteA variety of MuscoviteKAl2(AlSi3O10)(OH)2
AtomsiteA synonym of 'Trinitite'

IMA Classification of Adamsite-(Y)Hide

Approved
IMA Formula:
NaY(CO3)2·6H2O
Approval year:
1999
First published:
2000

Classification of Adamsite-(Y)Hide

5.CC.30

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)

Mineral SymbolsHide

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

SymbolSourceReference for Standard
Ads-YIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of Adamsite-(Y)Hide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of Adamsite-(Y)Hide

Pearly
Transparency:
Transparent, Translucent
Colour:
Colourless, white, pale pink, pale purple.
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}; good on {100}, {010}.
Density:
2.27(2) g/cm3 (Measured)    2.27 g/cm3 (Calculated)

Optical Data of Adamsite-(Y)Hide

Type:
Biaxial (+)
RI values:
nα = 1.48 nβ = 1.498 nγ = 1.571
Max. Birefringence:
δ = 0.091
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Low (negative)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.

No measured or calculated 2V is on file for this mineral, so the value used here (55°) is estimated from its recorded refractive indices and optic sign, not from a direct 2V measurement.
Dispersion:
none
Optical Extinction:
Y = b; Z ∧ a = 14°.

Chemistry of Adamsite-(Y)Hide

Mindat Formula:
NaY[CO3]2 · 6H2O
Element Weights:
Element% weight
O56.468 %
Y26.148 %
C7.065 %
Na6.762 %
H3.557 %

Calculated from ideal end-member formula.
O
Y
C
Na
H
Common Impurities:
Gd,Nd,Yb,Sm,Ho

Crystallography of Adamsite-(Y)Hide

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 6.2592 Å, b = 13.0838 Å, c = 13.227 Å
α = 91.130°, β = 103.554°, γ = 90.188°
Ratio:
a:b:c = 0.478 : 1 : 1.011
Unit Cell V:
1049.1 ų
Z:
4
Morphology:
Flat, acicular to fibrous crystals, up to 2.5 cm in length. Forming spherical groups of radiating crystals, more rarely reticulated groups. Elongated on [100] and flat on [001]. Forms observed are the pedions {010}, {010}, {001}, {001}, {100} and {100}.
Twinning:
By reflection on {001}, common.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005703Adamsite-(Y)Grice J D, Gault R A, Roberts A C, Cooper M A (2000) Adamsite-(Y), a new sodium-yttrium carbonate mineral species from The Canadian Mineralogist 38 1457-14662000Mont Saint-Hilaire, Quebec, Canada0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.81 Å(100)
6.45 Å(70)
4.456 Å(60)
4.291 Å(60)
2.571 Å(60)
2.050 Å(50)
2.869 Å(30)
Comments:
Mont Saint-Hilaire, Canada.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of Adamsite-(Y)Hide

General Appearance of Type Material:
Crystals are acicular to fibrous, to 2.5 cm, elongated along [100], flattened on [001], showing {010} and {001}; in spherical radiating groups, which rarely are reticulated.
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Canada, numbers 82939 and 82940.
Geological Setting of Type Material:
A rare late-stage, low-temperature hydrothermal mineral in an alkalic pegmatite dike associated with an intrusive alkalic gabbro-syenite complex.
Associated Minerals at Type Locality:

Synonyms of Adamsite-(Y)Hide

Other Language Names for Adamsite-(Y)Hide

Common AssociatesHide

Associations Based on Photo Data:
21 photos of Adamsite-(Y) associated with FranconiteNa(Nb2O5)(OH) · 3H2O
20 photos of Adamsite-(Y) associated with Thomasclarkite-(Y)(Na,Ce)(Y,REE)(HCO3)(OH)3 · 4H2O
16 photos of Adamsite-(Y) associated with Shomiokite-(Y)Na3Y[CO3]3 · 3H2O
16 photos of Adamsite-(Y) associated with RhodochrositeMnCO3
16 photos of Adamsite-(Y) associated with MicroclineK(AlSi3O8)
14 photos of Adamsite-(Y) associated with AegirineNaFe3+Si2O6
7 photos of Adamsite-(Y) associated with Synchysite-(Ce)CaCe(CO3)2F
6 photos of Adamsite-(Y) associated with CalciteCaCO3
5 photos of Adamsite-(Y) associated with QuartzSiO2
5 photos of Adamsite-(Y) associated with AlbiteNa(AlSi3O8)

Related Minerals - Strunz-mindat GroupingHide

5.CC.Bainbridgeite-(NdCe)Na2Ba2NdCe(CO3)6 · 3H2OTric. 1 : P1
5.CC.Yuchuanite-(Y)Y2(CO3)3 · H2OTric. 1 : P1
5.CC.Alicewilsonite-(YCe)Na2Sr2YCe(CO3)6 · 3H2OTric. 1 : P1
5.CC.05Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2OTric. 1 : P1
5.CC.05Alicewilsonite-(YLa)Na2Sr2YLa(CO3)6 · 3H2OTric. 1 : P1
5.CC.05Mckelveyite-(Nd)NaCaBa3Nd(CO3)6 · 3H2OMon. m : Bb
5.CC.05Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2OTric. 1 : P1
5.CC.05EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2OHex. 6mm : P63mc
5.CC.05'UM1992-05-CO:CaCeLaNaSr'(Sr,Na,Y,REE,Ca,Ba)2(CO3)2 · H2OTrig. 3m : R3m
5.CC.05WeloganiteNa2Sr3Zr(CO3)6 · 3H2OTric. 1 : P1
5.CC.05Mckelveyite GroupA3B3(CO3)6 · 3H2O
5.CC.05Bainbridgeite-(YCe)Na2Ba2YCe(CO3)6 · 3H2OTric. 1 : P1
5.CC.05'Unnamed (MSH UK-37A)'Sr3NaCaY(CO3)6 · 3H2OHex. 6mm : P63mc
5.CC.10Tengerite-(Y)Y2(CO3)3 · 2-3H2OOrth. mmm(2/m2/m2/m) : Pnnm
5.CC.15Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2OOrth.
5.CC.15Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2OOrth.
5.CC.15Hizenite-(Y)Ca2Y6(CO3)11 · 14H2O Orth.
5.CC.20Shomiokite-(Y)Na3Y[CO3]3 · 3H2OOrth. mm2
5.CC.25Lanthanite-(Ce)Ce2(CO3)3 · 8H2OOrth. mmm(2/m2/m2/m)
5.CC.25Lanthanite-(La)La2(CO3)3 · 8H2OOrth. mmm(2/m2/m2/m)
5.CC.25Lanthanite-(Nd)Nd2(CO3)3 · 8H2OOrth. mmm(2/m2/m2/m)
5.CC.25Calkinsite-(Ce)(Ce,La)2(CO3)3 · 4H2OOrth.
5.CC.35Decrespignyite-(Y)Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2OMon.
5.CC.40Galgenbergite-(Ce)Ca(Ce,La,Nd)2(CO3)4 · H2OTric. 1 : P1
5.CC.45Lecoqite-(Y)Na3Y(CO3)3 · 6H2OHex. 6 : P63

Other InformationHide

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

Internet Links for Adamsite-(Y)Hide

References for Adamsite-(Y)Hide

Localities for Adamsite-(Y)Hide

Showing 4 localities.

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.
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Locality ListHide

- 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
Grice et al. (2000)
Norway
 
  • Nordland
    • Narvik
Husdal (2008)
Russia
 
  • Murmansk Oblast
    • Lovozersky District
      • Alluaiv Mountain
        • Umbozero mine
Pavel M. Kartashov (n.d.)
Spain
 
  • Canary Islands
    • Santa Cruz de Tenerife Province
      • Tenerife
Dill et al. (2023)
 
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