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Recently Released Special Editions

Rare Earth Minerals

Thursday, 31 August 2023 12:30 PM

Rare Earth Minerals are those minerals which contain a rare earth element such as yttrium, lanthanum, cerium etc. There are 17 REE's all together and each are used in high tech applications such as computers, cell phones, and televisions to name just a few.

SOLD
Thalenite-(Y) - BAC62385
Thalenite-(Y) - BAC62385

Thalenite-(Y)

#BAC62385
Locality
Hundholmen, Tysfjord, Nordland, Norway 
Formula
Y3Si3O10(OH) 
Availability
Sold
Size
4 x 3 x 2.6 cm - Miniature 
Tagged
REE mineral  

Two (10mm and 7mm) yellowish good crystals showing faces associated with Allanite and Gadolinite.


Thalenite-(Y)

Formula
Y3Si3O10(OH) 
Crystal System
Monoclinic 
Crystal Habit
Tabular, Prismatic 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
pink, brownish green, brown 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Brittle - Conchoidal 
Hardness
6-6.5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Thalenite-(Y)
On Dakota Matrix
Other Available Thalenite-(Y)
WebMineral
View Thalenite-(Y)
Mindat
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SOLD
Wakefieldite-(Y) - BAC62357
Wakefieldite-(Y) - BAC62357

Wakefieldite-(Y)

#BAC62357
Locality
White Tank Mountains, Maricopa Co., Arizona, United States 
Formula
YVO4 
Availability
Sold
Size
2.3 x 1.7 x 1.1 cm - Thumbnail 
Tagged
REE mineral , vanadium  

Black glassy crystalline mass to 1.1cm.


Wakefieldite-(Y)

Formula
YVO4 
Crystal System
Tetragonal 
Color
yellow, light brown, light yellow brown 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Hardness
5 
Collection
William & Anne Cook Collection
On Dakota Matrix
Previously Sold Wakefieldite-(Y)
On Dakota Matrix
Other Available Wakefieldite-(Y)
WebMineral
View Wakefieldite-(Y)
Mindat
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SOLD
Yttrotungstite-(Y) - BAC62353
Yttrotungstite-(Y) - BAC62353

Yttrotungstite-(Y)

#BAC62353
Locality
Kramat Pulai mine, Kinta dist., Perak, Malaysia 
Formula
YW2O6(OH)3 
Availability
Sold
Size
1.7 x 1.2 x 1 cm - Thumbnail 
Tagged
REE mineral , tungsten  
Special Info
Type Locality 

The entire mass is Yttrotungstite-(Y) and is vuggy. Filling the vugs are a variety of habits of this very rare mineral including globular, smooth and spheroidal, and platy crystals. It is found only in Malaysa.


Yttrotungstite-(Y)

Formula
YW2O6(OH)3 
Crystal System
Monoclinic 
Crystal Habit
Earthy, Encrustations, Lath 
Cleavage
Good, Poor, None 
Luster
Earthy (Dull) 
Color
canary yellow, light yellow 
Streak
yellow white 
Class
Monoclinic - Prismatic 
Hardness
1 
Collection
William & Anne Cook Collection
Special Info
Type Locality
On Dakota Matrix
Previously Sold Yttrotungstite-(Y)
On Dakota Matrix
Other Available Yttrotungstite-(Y)
WebMineral
View Yttrotungstite-(Y)
Mindat
View Yttrotungstite-(Y)

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