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Mckelveyite-(Nd)

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Formula:
(Ba,Sr)(Nd,Ce,La)(CO3)2 · 4-10H2O
System:
Triclinic
Colour:
Greenish yellow-brown.
Hardness:
3 - 3½
(Formula is not charge-balanced, and does not correspond to that of the approved mckelveyite-(Y).)

Classification of Mckelveyite-(Nd)

Rejected
5.CC.05

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
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°
Max Birefringence:
δ = 0.097
Image 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)(CO3)2 · 4-10H2O
Essential elements:
All elements listed in formula:

Relationship of Mckelveyite-(Nd) 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-(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.30Adamsite-(Y)NaY[CO3]2 · 6H2O
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 Mckelveyite-(Nd)

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 Mckelveyite-(Nd)

Reference List:
American Mineralogist (1993): 78: 237.

Internet Links for Mckelveyite-(Nd)

Localities for Mckelveyite-(Nd)

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.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Northern Karelia
ZVMO 119(6):76 (1990)
Mineral and/or Locality  
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