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Mckelveyite-(Y)

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Big Photo

Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© 2004 JBS

Show Mckelveyite-(Y) Photos (7)



Formula:
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
 · 3H
 
2
O
System:TriclinicColour:Yellow, orange-brown, ...
Hardness:3½ - 4
Name:
For Vincent Ellis McKelvey (1916-1985), director of the USGS for his studies of the Phosphoria formation.


Donnayite Group

2M polytype known (proposal IMA2005-012a, now withdrawn).

Classification of Mckelveyite-(Y)

IMA status:Approved
Strunz 8th edition ID:5/D.04-20
Nickel-Strunz 10th (pending) edition ID:5.CC.05

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
Dana 8th edition ID:15.3.4.2

15 : HYDRATED NORMAL CARBONATES
3 : AmBn(XO3)p·xH2O, with (m+n):p = 1:1
Hey's CIM Ref.:11.8.20

11 : Carbonates
8 : Carbonates of the rare earths
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Type Occurrence of Mckelveyite-(Y)

Type Locality:Diamond Alkali Daco No. 3, Green River Formation, Sweetwater Co., Wyoming, USA
Place of Conservation of Type Material:Smithsonian
Geological Setting of type material:From core in the Green River formation

Physical Properties of Mckelveyite-(Y)

Lustre:Vitreous, Greasy, Dull
Diaphaneity (Transparency):Transparent, Translucent, Opaque
Colour:Yellow, orange-brown, gray, greenish-brown, nearly black.
Hardness (Mohs):3½ - 4
Density (measured):3.25(5) g/cm3
Density (calculated):3.37 g/cm3

Crystallography of Mckelveyite-(Y)

Crystal System:Triclinic
Class (H-M):1 - Pedial
Space Group:P1
Cell Parameters:a = 9.170(3) Å, b = 9.169(3) Å, c = 7.075(2) Å
α = 102.50(3)°, β = 115.63(3)°, γ = 59.99(3)°
Ratio:a:b:c = 1 : 1 : 0.772
Unit Cell Volume:V 464.43 ų (Calculated from Unit Cell)
Z:1
Morphology:Tabular to pyramidal pseudorhombohedral.
Twinning:Threefold

Optical Data of Mckelveyite-(Y)

Type:Biaxial (-)
RI values: nα = 1.550 - 1.554 nβ = 1.550 - 1.554 nγ = 1.649 - 1.658
Maximum Birefringence:δ = 0.099 - 0.104

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:weak to distinct
Pleochroism:Visible
Comments:In greens

Chemical Properties of Mckelveyite-(Y)

Formula:
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
 · 3H
 
2
O
Essential elements:Ba, C, Ca, H, Na, O, Y
All elements listed in formula:Ba, C, Ca, H, Na, O, U, Y

Relationship of Mckelveyite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.CC.05Donnayite-(Y)
Sr
 
3
NaCaY(CO
 
3
)
 
6
 · 3H
 
2
O
5.CC.05Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
5.CC.05Mckelveyite-(Nd)
(Ba,Sr)(Nd,Ce,La)(CO
 
3
)
 
2
 · 4-10H
 
2
O
5.CC.05Weloganite
Sr
 
3
Na
 
2
Zr(CO
 
3
)
 
6
 · 3H
 
2
O
5.CC.10Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
 · 2-3H
 
2
O
5.CC.15Kimuraite-(Y)
Ca(Y,Nd)
 
2
(CO
 
3
)
 
4
 · 6H
 
2
O
5.CC.15Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
(CO
 
3
)
 
7
 · 9H
 
2
O
5.CC.20Shomiokite-(Y)
Na
 
3
Y[CO
 
3
]
 
3
 · 3H
 
2
O
5.CC.25Calkinsite-(Ce)
(Ce,La)
 
2
(CO
 
3
)
 
3
 · 4H
 
2
O
5.CC.25Lanthanite-(Ce)
(Ce,La,Nd)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
5.CC.25Lanthanite-(La)
(La,Ce)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
5.CC.25Lanthanite-(Nd)
(Nd,La)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
5.CC.30Adamsite-(Y)
NaY[CO
 
3
]
 
2
 · 6H
 
2
O
5.CC.35Decrespignyite-(Y)
Cu(Y,REE)
 
4
(CO
 
3
)
 
4
(OH)
 
5
Cl · 2H
 
2
O
5.CC.40Galgenbergite-(Ce)
Ca(Ce,La,Nd)
 
2
(CO
 
3
)
 
4
 · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.8.1Calkinsite-(Ce)
(Ce,La)
 
2
(CO
 
3
)
 
3
 · 4H
 
2
O
11.8.2Lanthanite-(La)
(La,Ce)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
11.8.3Lanthanite-(Ce)
(Ce,La,Nd)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
11.8.4Lanthanite-(Nd)
(Nd,La)
 
2
(CO
 
3
)
 
3
 · 8H
 
2
O
11.8.5Hydroxylbastnäsite-(Ce)
(Ce,La)(CO
 
3
)(OH,F)
11.8.6Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)(CO
 
3
)(OH,F)
11.8.7Hydroxylbastnäsite-(La)
(La,Ce)(CO
 
3
)(F,OH)
11.8.8Remondite-(Ce)
Na
 
3
(Ce,La,Ca,Na,Sr)
 
3
(CO
 
3
)
 
5
11.8.9Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
 · 2-3H
 
2
O
11.8.10Kimuraite-(Y)
Ca(Y,Nd)
 
2
(CO
 
3
)
 
4
 · 6H
 
2
O
11.8.11Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
(CO
 
3
)
 
7
 · 9H
 
2
O
11.8.12Calcioancylite-(Nd)
Ca(Nd,La,Ce)(CO
 
3
)
 
2
(OH)
 
.
H
 
2
O
11.8.13Calcioancylite-(Ce)
(Ca,Sr)Ce(CO
 
3
)
 
2
(OH) · H
 
2
O
11.8.14Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
11.8.15Khanneshite
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
11.8.16Donnayite-(Y)
Sr
 
3
NaCaY(CO
 
3
)
 
6
 · 3H
 
2
O
11.8.17Carbocernaite
(Ca,Na)(Sr,Ce,Ba)(CO
 
3
)
 
2
11.8.18Ancylite-(Ce)
SrCe(CO
 
3
)
 
2
(OH) · H
 
2
O
11.8.19Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
11.8.21Sahamalite-(Ce)
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4

Other Names for Mckelveyite-(Y)

Synonyms:
Mackelveyite-(Y)
Other Languages:
German:Mckelveyit-(Y)

Polytypes for Mckelveyite-(Y)

Polytypes:
IMA2005-012a

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 Mckelveyite-(Y)

Reference List:

- +
American Mineralogist (1965): 50: 593-612.

American Mineralogist (1979): 64: 659.

American Mineralogist (1993): 78: 236-237.

Internet Links for Mckelveyite-(Y)

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mckelveyite-(Y) details from Handbook of Mineralogy (PDF)
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    • Localities for Mckelveyite-(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.
    Hide Locality List
    (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
    		Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
    Italy
     
    • Lombardy
      • Sondrio Province
    		Demartin F., Gramaccioli C.M., Campostrini I., Diella V. (2008): Canad.Mineral., 46, 195-203.
          • Lanzada
    		Demartin, F., Gramaccioli, C.M., Campostrini, I., Diella, V. (2008): The crystal structure of mckelveyite-(Y)-2M, a new monoclinic polytype from Val Malenco, Italian Alps. Canadian Mineralogist, 46, 195-203.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
            • Kukisvumchorr Mt
    		[World of Stones 95:5-6, p64]
    Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
    www.koeln.netsurf.de/~w.steffens/lovo.htm
    Sorokhtina, N.V., Chukanov, N.V., Voloshin, A.V., Pakhomovsky, Y.A., Bogdanova, A.N., and Moiseev, M.M. (2008): Geology of Ore Deposits 50(7), 620-628.
    www.koeln.netsurf.de/~w.steffens/vuori.htm; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • Wyoming
      • Sweetwater Co.
        • Green River Formation
    		Am Min 50:593-612
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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.
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