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Rare Earth Minerals

Tuesday, 19 April 2022 02:30 PM

Introducing the "Rare Earth Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including fergusonite-(y), gadolinium oxide, hingganite-(y), kozoite-(nd), lanthanite-(ce), and loparite-(ce) and more from places like Quartz Hill, Lake George, Park Co., Colorado, United States, no locality, Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Russia, Mitsukoshi, Hizen-cho, Karatsu City, Saga, Kyushu, Japan, Nâm Xe REE deposit, Mt Fansipan, Phong Tho District, Lai Châu Province, Vietnam, and Alluaiv Mt., Lovozero Massif, Kola Peninsula, Russia.

Fergusonite-(Y)

#BW58048
Locality
Quartz Hill, Lake George, Park Co., Colorado, United States 
Formula
YNbO4 
Availability
Sold
Size
5 x 3.5 x 2 cm - Miniature 
Tagged
REE mineral  

A mass of vitreous, sub-metallic Fergusonite.


Fergusonite-(Y)

Formula
YNbO4 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Metamict 
Cleavage
Indistinct, None, None 
Luster
Sub Metallic 
Color
black, black, brown, gray, yellow 
Streak
brown 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
5.5-6 
Collection
Bill Wilson Collection

Gadolinium Oxide

#58174
Locality
no locality 
Formula
Gd2O3 
Availability
Available
Price
$75.00
Size
3.5 x 1 x 1 cm - Miniature 

Gadolinium was discovered in 1880 It is named after the mineral gadolinite of the is named after the Finnish chemist Johan Gadolin. Gadolinium is found in Gadolinite.

 


Hingganite-(Y)

with Yttrofluorite & amazonite - #BW58026
Locality
Ploskaya Mt, Western Keivy Massif, Kola Peninsula, Russia 
Formula
YBeSiO4(OH) 
Availability
Sold
Size
3.5 x 3 x 3.5 cm - Miniature 
Tagged
beryllium , REE mineral , pegmatite mineral  

This is a colorful specimen with green Microcline, var. amazonite, and purple yttrofluorite, a variety of Fluorite. The Hingganite occurs on corroded yellowish brown plumbomicrolite as white to colorless acicular sprays from 0.5mm to 2mm groups. 

Ploskaya is a Niobium-Yittrium-Fluorine (NYF) type pegmatite containing heavy rare earth elements (HREE). The pegmatite is now considered the largest amazonite deposit in the world with a beautiful solid green mass measuring 720 x 80ft. 


Hingganite-(Y)

Formula
YBeSiO4(OH) 
Crystal System
Monoclinic 
Crystal Habit
Wheat Sheaf, Aggregates 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
green, yellow brown, white, light blue, light yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
5-6 
Collection
Bill Wilson Collection

Kozoite-(Nd)

#BW58030
Locality
Mitsukoshi, Hizen-cho, Karatsu City, Saga, Kyushu, Japan 
Formula
NdCO3(OH) 
Availability
Sold
Size
3 x 2 x 1.5 cm - Thumbnail 
Tagged
carbonate , REE mineral  

Faint purple chalky crystals to 1mm groups in olivine matrix. May also contain noedymium, lanthanum, samarium and praseodyium. This locality also has these rare earth minerals: Kimuraite-(Y), Hizenite-(Y) (TL), Lanthanite-(Nd), Lokkaite-(Y), which may be present. Praseodymium may be substituted in the Kozoite structure, so included is a small vial of praseodymium oxide.

Neodymium is used in high tech, powerful magnets, lasers, and a coloring agent in ceramics and glass. The manufacturing of the magnets use 69% of the neodymium mined. 


Kozoite-(Nd)

Formula
NdCO3(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Microscopic Crystals 
Luster
Vitreous - Dull 
Color
pale pinkish purple, white 
Class
Orthorhombic - Dipyramidal 
Hardness
Collection
Bill Wilson Collection

Lanthanite-(Ce)

#BW58031
Locality
Nâm Xe REE deposit, Mt Fansipan, Phong Tho District, Lai Châu Province, Vietnam 
Formula
Ce2(CO3)3·8H2
Availability
Available
Price
$75.00
Size
5.5 x 4 x 2.5 cm - Sm Cabinet 
Tagged
carbonate , REE mineral  

Granular reddish brown mass from a carbonatite deposit.


Lanthanite-(Ce)

Formula
Ce2(CO3)3·8H2
Crystal System
Orthorhombic 
Crystal Habit
Platy 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Sectile 
Hardness
2.5 
Collection
Bill Wilson Collection
SOLD
Loparite-(Ce) - BW58032
Loparite-(Ce) - BW58032

Loparite-(Ce)

with Sodalite & Aegerine - #BW58032
Locality
Alluaiv Mt., Lovozero Massif, Kola Peninsula, Russia 
Formula
(Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6 
Availability
Sold
Size
3 x 2 x 2 cm - Thumbnail 
Tagged
REE mineral  
Special Info
Radioactive!! 

Two large black, metallic crystal grains to 6mm with white Sodalite. Loparite is a REE mineral with thorium and titanium and is a member of the Perovskite group. It was first reported from the Lovozero alkaline massif in 1890. It was considered by W. Ramsay as "new mineral number 1" from Lovozero. It wasn't described until 1921. 


Loparite-(Ce)

Formula
(Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6 
Crystal System
Isometric 
Crystal Habit
Twinning Common, Cubic Crystals, Massive - Granular 
Cleavage
Imperfect, None, None 
Luster
Adamantine - Metallic 
Color
black 
Streak
reddish brown 
Class
Isometric - Hexoctahedral 
Fracture
Brittle - Uneven 
Hardness
5.5 
Collection
Bill Wilson Collection
Special Info
Radioactive!!

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