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Rare Earth Minerals

Thursday, 27 February 2020 12:00 PM

Introducing the "Rare Earth Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including lokkaite-(y), luteium oxide, mckelveyite-(y), nordite-(la), phosinaite-(ce), and praseodymium oxide and more from places like Pyörönmaa pegmatite, Kangasala, Finland, no locality, Bastnäs mines, Riddarhyttan, Västmanland, Sweden, Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia, Kedykverpakhk Mt., Lovozero Massif, Kola Peninsula, Russia.

Lokkaite-(Y)

with Tengerite-(Y) - #43848
Locality
Pyörönmaa pegmatite, Kangasala, Finland 
Formula
CaY4(CO3)7·9H2
Availability
Available
Price
$50.00
Size
3.5 x 1.5 x 2 cm - Miniature 
Tagged
carbonate , REE mineral  

The two minerals af virtually indistinguishable on this specimen. Both are white and platy. Rich specimen.


Lokkaite-(Y)

Formula
CaY4(CO3)7·9H2
Crystal System
Orthorhombic 
Crystal Habit
Radial, Aggregates 
Luster
Vitreous (Glassy) 
Color
snow white 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle 
Hardness

Luteium Oxide

#52268
Locality
no locality 
Formula
Lu2O3 
Availability
Available
Price
$45.00
Size
4 x 1 x 1 cm - Miniature 
Tagged
REE oxide  

Small vial of Luteium oxide


Mckelveyite-(Y)

on Allanite - #DP52221
Locality
Bastnäs mines, Riddarhyttan, Västmanland, Sweden 
Formula
NaBa3(Ca,U)Y(CO3)6·3H2
Availability
Sold
Size
1.5 x 1.2 x 0.8 cm - Thumbnail 
Tagged
carbonate , REE mineral  

Mckelveyite-(Y) is a rare yttrium carbonate. Dark greenish plates on black Allanite. Questionable ID.


Mckelveyite-(Y)

Formula
NaBa3(Ca,U)Y(CO3)6·3H2
Crystal System
Monoclinic 
Crystal Habit
Pyramidal 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, black, greenish gray, white, gray 
Streak
white 
Class
Monoclinic - Domatic 
Hardness
3.5-4 
Collection
Don Phillips Collection

Nordite-(La)

#41383
Locality
Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia 
Formula
Na3SrLaZnSi6O17 
Availability
Available
Price
$75.00
Size
Capsule 
Tagged
REE mineral  
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 

A 3mm grain of Nordite-(La) with a vial lanthanum oxide. Nordite-(La) is rare and occurs in just three localities worldwide.


Nordite-(La)

Formula
Na3SrLaZnSi6O17 
Crystal System
Orthorhombic 
Crystal Habit
Metamict, Tabular, Fibrous 
Cleavage
Good, None, None 
Luster
Vitreous - Greasy 
Color
light brown, dark brown, blackish brown 
Streak
light brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal - Uneven 
Hardness
5-6 
Special Info
XRD Confirmed
Special Info
EDS Confirmed

Phosinaite-(Ce)

#44147
Locality
Kedykverpakhk Mt., Lovozero Massif, Kola Peninsula, Russia 
Formula
Na13Ca2Ce(SiO3)4(PO4)4 
Availability
Available
Price
$125.00
Size
3 x 2 x 1 cm - Thumbnail 
Tagged
phosphate , REE mineral  

2mm wide pinkish-brown tabular crystal. Phosinaite-(Ce), like most REE minerals, may also accomadate several other rare earth elements within its structure. Phosinaite-(Ce) may also contain La, Th, Nd, or Pr. This specimen comes with a few grams of powdered cerium oxide.


Phosinaite-(Ce)

Formula
Na13Ca2Ce(SiO3)4(PO4)4 
Crystal System
Orthorhombic 
Crystal Habit
Columnar 
Cleavage
Perfect, Indistinct, Indistinct 
Luster
Vitreous (Glassy) 
Color
colorless, pink, light brown 
Streak
white 
Class
Orthorhombic - Disphenoidal 
Hardness
3.5 

Praseodymium Oxide

#52264
Locality
no locality 
Formula
Pr6O11 
Availability
Available
Price
$42.00
Size
4 x 1 x 1 cm - Miniature 
Tagged
REE oxide  

Small vial of Praseodymium oxide.


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