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Abenakiite-(Ce)

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Abenaki Couple
Formula:
Na26Ce6(Si6O18)(PO4)6(CO3)6(SO3)
System:
Hexagonal
Colour:
Pale brown
Lustre:
Vitreous
Hardness:
4 - 5
Name:
Named after the Abenaki, the indigenous people who inhabited the area around Mont Saint-Hilaire in southern Québec, prior to the arrival of European settlers.
This page provides mineralogical data about Abenakiite-(Ce).

Classification of Abenakiite-(Ce)

Approved 1991
9.CK.10

9 : SILICATES (Germanates)
C : Cyclosilicates
K : [Si6O18]12- 6-membered single rings, with insular complex anions
Dana 7th ed.:
61.4.1.1
61.4.1.1

61 : CYCLOSILICATES Six-Membered Rings
4 : Six-Membered Rings with other anions
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First Recorded Occurrence of Abenakiite-(Ce)

Geological Setting of First Recorded Material:
in a xenolith of Sodalite syenite
Associated Minerals at First Recorded Locality:

Physical Properties of Abenakiite-(Ce)

Vitreous
Colour:
Pale brown
Streak:
White
Hardness (Mohs):
4 - 5
Cleavage:
Poor/Indistinct

Crystallography of Abenakiite-(Ce)

Crystal System:
Hexagonal

Optical Data of Abenakiite-(Ce)

Type:
Uniaxial (-)
RI values:
nω = 1.589 nε = 1.586
Max Birefringence:
δ = 0.003
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of Abenakiite-(Ce)

Formula:
Na26Ce6(Si6O18)(PO4)6(CO3)6(SO3)
Essential elements:
All elements listed in formula:

Relationship of Abenakiite-(Ce) to other Species

9.CK.Fluor-schorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3F
9.CK.05Fluor-buergeriteNa(Fe33+)Al6(Si6O18)(BO3)3O3F
9.CK.05Chromium-draviteNa(Mg3)Cr63+(Si6O18)(BO3)3(OH)3(OH)
9.CK.05DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05FeruviteCa(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)
9.CK.05Foitite(□,Na)(Fe22+Al)Al6(Si6O18)(BO3)3(OH)3OH
9.CK.05LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05OleniteNa(Al3)Al6(Si6O18)(BO3)3O3(OH)
9.CK.05PovondraiteNaFe33+(Mg2Fe43+)(Si6O18)(BO3)3(OH)3O
9.CK.05SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05Magnesio-foitite(□,Na)(Mg2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05Rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
9.CK.05Oxy-vanadium-draviteNa(V)3(V4Mg2)Si6O18(BO3)3(OH)3O
9.CK.05Oxy-draviteNa(MgAl2)MgAl5(Si6O18)(BO3)3(OH)3O
9.CK.05Oxy-rossmanite☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3O
9.CK.05Chromo-alumino-povondraiteNa(Cr3)(Al4Mg2)(Si6O18)(BO3)3(OH)3O
9.CK.05Fluor-draviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3F
9.CK.05Fluor-uviteCa(Mg3)MgAl5(Si6O18)(BO3)3(OH)3F
9.CK.15ScawtiteCa7(Si3O9)2CO3 · 2H2O
9.CK.20Steenstrupine-(Ce)Na14Mn22+(Fe3+,Mn3+)2Ce6(Zr,Th)(Si6O18)2(PO4)6(HPO4)(OH)2 · 2H2O
9.CK.20ThorosteenstrupineCaMnThSi4O11(OH)F · 6H2O

Other Names for Abenakiite-(Ce)

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 Abenakiite-(Ce)

Reference List:
McDONALD, A.M., CHAO, G.Y., and GRICE, J.D. (1994) Abenakiite (Ce), a new silicophosphate carbonate mineral from Mont Saint Hilaire, Quebec: description and structure determenation. Canadian Mineralogist, 32, 843 854.

Internet Links for Abenakiite-(Ce)

Localities for Abenakiite-(Ce)

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
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
McDonald, A.M., Chao, G.Y. and Grice, J.D. (1994), Abenakiite-(Ce), a new silicophosphate carbonate mineral from Mont Saint-Hilaire, Quebec: Description and structure determination. Canadian Mineralogist, 32, 843-854.
Mineral and/or Locality  
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