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Adamsite-(Y)

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Formula:
NaY[CO3]2 · 6H2O
System:
Triclinic
Colour:
Colourless, white, pale ...
Lustre:
Pearly
Hardness:
3
Name:
Named after 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.
Crystals are acicular to fibrous, to 2.5 cm, elongated along [001], flattened on {001}, showing {010} and {001}; in spherical radiating groups, which rarely are reticulated.

Classification of Adamsite-(Y)

Approved 1999
5.CC.30

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
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Type Occurrence of Adamsite-(Y)

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.

Physical Properties of Adamsite-(Y)

Pearly
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Colourless, white, pale pink, pale purple.
Streak:
White
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}; good on {100}, {010}.

Crystallography of Adamsite-(Y)

Crystal System:
Triclinic

Optical Data of Adamsite-(Y)

Type:
Biaxial (+)
RI values:
nα = 1.480 nβ = 1.498 nγ = 1.571
Max Birefringence:
δ = 0.091
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemical Properties of Adamsite-(Y)

Formula:
NaY[CO3]2 · 6H2O
Essential elements:
All elements listed in formula:

Relationship of Adamsite-(Y) to other Species

5.CC.05Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2O
5.CC.05EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
5.CC.05Mckelveyite-(Nd)(Ba,Sr)(Nd,Ce,La)(CO3)2 · 4-10H2O
5.CC.05Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
5.CC.05WeloganiteNa2Sr3Zr(CO3)6 · 3H2O
5.CC.10Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5.CC.15Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2O
5.CC.15Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
5.CC.20Shomiokite-(Y)Na3Y[CO3]3 · 3H2O
5.CC.25Calkinsite-(Ce)(Ce,La)2(CO3)3 · 4H2O
5.CC.25Lanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(La)(La,Ce)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(Nd)(Nd,La)2(CO3)3 · 8H2O
5.CC.35Decrespignyite-(Y)Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2O
5.CC.40Galgenbergite-(Ce)Ca(Ce,La,Nd)2(CO3)4 · H2O

Other Names for Adamsite-(Y)

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 Adamsite-(Y)

Reference List:
GRICE, J.D., and GAULT, R.A., ROBERTS, A.C., and COOPER, M.A. (2000) Adamsite-(Y), a new sodium-yttrium carbonate mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist, 38, 1457-1466.

Internet Links for Adamsite-(Y)

Localities for Adamsite-(Y)

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 (TL)
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
GRICE, J.D., and GAULT, R.A., ROBERTS, A.C., and COOPER, M.A. (2000) Adamsite-(Y), a new sodium-yttrium carbonate mineral species from Mont Saint-Hilaire, Quebec. Canadian Mineralogist, 38, 1457-1466.
Norway
 
  • Nordland
    • Tysfjord
Husdal, T. (2008): The minerals of the pegmatites within the Tysfjord granite, northern Norway. Norsk Bergverksmuseum, skrift 38, 5-28.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Lovozero Massif
          • Alluaiv Mt
            • Umbozero mine (Umbozerskii mine; Umba Mine)
P.M. Kartashov data
Mineral and/or Locality  
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