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Mckelveyite-(Nd)

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Formula:
(Ba,Sr)(Nd,Ce,La)(CO
 
3
)
 
2
 · 4-10H
 
2
O
System:TriclinicColour:Greenish yellow-brown.
Hardness:3 - 3½


Donnayite group.

Classification of Mckelveyite-(Nd)

IMA status:Rejected
Strunz 8th edition ID:5/D.04-25
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:15.3.4.3

15 : HYDRATED NORMAL CARBONATES
3 : AmBn(XO3)p·xH2O, with (m+n):p = 1:1
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Physical Properties of Mckelveyite-(Nd)

Diaphaneity (Transparency):Transparent, Opaque
Colour:Greenish yellow-brown.
Hardness (Mohs):3 - 3½

Crystallography of Mckelveyite-(Nd)

Crystal System:Triclinic

Optical Data of Mckelveyite-(Nd)

Type:Biaxial (-)
RI values: nα = 1.556 nβ = 1.650 nγ = 1.653
2V:Measured: 10° to 13°, Calculated: 18°
Maximum Birefringence:δ = 0.097

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v strong

Chemical Properties of Mckelveyite-(Nd)

Formula:
(Ba,Sr)(Nd,Ce,La)(CO
 
3
)
 
2
 · 4-10H
 
2
O
Essential elements:Ba, C, H, Nd, O
All elements listed in formula:Ba, C, Ce, H, La, Nd, O, Sr

Relationship of Mckelveyite-(Nd) 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-(Y)
Ba
 
3
Na(Ca,U)Y(CO
 
3
)
 
6
 · 3H
 
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

Other Names for Mckelveyite-(Nd)

Synonyms:
Mackelveyite-(Nd)
Other Languages:

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-(Nd)

Reference List:

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

Internet Links for Mckelveyite-(Nd)

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    • Localities for Mckelveyite-(Nd)

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    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    		ZVMO 119(6):76 (1990)
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