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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 kamphaugite-(y), kimuraite-(y), lecoqite-(y), luteium oxide, mckelveyite-(y), and nordite-(la) and more from places like Telemark, Norway, Kirigo, Hizen-cho, Higashi-Matsuura-gun, Saga, Kyushu Island, Japan, Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada, no locality, Bastnäs mines, Riddarhyttan, Västmanland, Sweden, and Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia.

SOLD
Kamphaugite-(Y) - PD35396
Kamphaugite-(Y) - PD35396

Kamphaugite-(Y)

#PD35396
Locality
Telemark, Norway 
Formula
Ca2Y2(CO3)4(OH)2·3H2
Availability
Sold
Size
2.5 x 1.2 x 1 cm - Thumbnail 
Tagged
carbonate , REE mineral  

Tiny tannish spheroidal or crude rosettes of rare Kamphaugite-(Y). Kamphaugite-(Y) was first approved as a new IMA mineral in 1987, so fairly recent for a REE mineral. 


Kamphaugite-(Y)

Formula
Ca2Y2(CO3)4(OH)2·3H2
Crystal System
Tetragonal 
Crystal Habit
Spherical 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, white, light yellow 
Streak
white 
Class
Tetragonal - Trapezohedral 
Hardness
2-3 

Kimuraite-(Y)

#PD52151
Locality
Kirigo, Hizen-cho, Higashi-Matsuura-gun, Saga, Kyushu Island, Japan 
Formula
CaY2(CO3)4·6H2
Availability
Available
Price
$40.00
Size
Capsule 
Tagged
phosphate , REE mineral  
Special Info
Type Locality 

White silky looking Kimuraite-(Y). There are approximately 192 IMA and undefined yttrium rare earth minerals. 


Kimuraite-(Y)

Formula
CaY2(CO3)4·6H2
Crystal System
Orthorhombic 
Crystal Habit
Spherical, Aggregates 
Cleavage
Perfect, None, None 
Luster
Vitreous - Silky 
Color
white, light purple pink, light pink 
Streak
white 
Class
Orthorhombic 
Hardness
2.5 
Special Info
Type Locality

Lecoqite-(Y)

#44139
Locality
Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada 
Formula
Na3Y(CO3)3·6H2
Availability
Available
Price
$40.00
Size
Capsule 
Tagged
carbonate , REE mineral  
Special Info
Type Locality 
Special Info
XRD Confirmed 
Special Info
EDS Confirmed 
Special Info
Author's Material 

Lecoqite-(Y) is a relatively new mineral, which was published in 2010 by Pekov et al. In the capsule a little bit of white fibrous crystals. It is a portion of the author's study material.


Lecoqite-(Y)

Special Info
Type Locality
Special Info
XRD Confirmed
Special Info
EDS Confirmed
Special Info
Author's Material

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
SOLD
Nordite-(La) - 41383
Nordite-(La) - 41383

Nordite-(La)

#41383
Locality
Kirovskii mine, Kukisvumchorr Mt., Khibiny Massif, Kola Peninsula, Russia 
Formula
Na3SrLaZnSi6O17 
Availability
Sold
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

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