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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

Allanite-(Nd)

#BAC62380

Details
Data
Provenance
Resources

Locality: Åskagen quarry, Persberg dist., Filipstad, Värmland, Sweden
Formula: CaNdAl₂Fe²⁺(SiO₄)(Si₂O₇)O(OH)
Availability: Sold
Size: 2 x 1.7 x 1.7 cm - Thumbnail
Tagged: REE mineral
Special Info: Type Locality

Black metamict mass of Allanite-(Nd).

Allanite-(Nd)

Collection: William & Anne Cook Collection
Special Info: Type Locality

Mineralpedia: View Allanite-(Nd)
On Dakota Matrix: Previously Sold Allanite-(Nd)
On Dakota Matrix: Other Available Allanite-(Nd)
WebMineral: View Allanite-(Nd)
Mindat: View Allanite-(Nd)

SOLD

Allanite-(Y)

#BAC62384

Details
Data
Provenance
Resources

Locality: Bancroft, Ontario, Canada
Formula: CaYFe²⁺Al₂(Si₂O₇)(SiO₄)O(OH)
Availability: Sold
Size: 2 x 1.1 x 0.2 cm - Thumbnail
Tagged: REE mineral

Single black, rough but complete crystal.

Allanite-(Y)

Formula: CaYFe²⁺Al₂(Si₂O₇)(SiO₄)O(OH)
Crystal System: Monoclinic
Crystal Habit: Massive - Granular, Disseminated
Cleavage: Imperfect, Imperfect, None
Luster: Vitreous - Greasy
Color: brown, black
Streak: grayish brown
Class: Monoclinic - Prismatic
Fracture: Conchoidal
Hardness: 5.5

Collection: William & Anne Cook Collection

On Dakota Matrix: Previously Sold Allanite-(Y)
On Dakota Matrix: Other Available Allanite-(Y)
WebMineral: View Allanite-(Y)
Mindat: View Allanite-(Y)

SOLD

Askagenite-(Nd)

#BAC62379

Details
Data
Provenance
Resources

Locality: Åskagen quarry, Persberg dist., Filipstad, Värmland, Sweden
Formula: Mn²⁺NdAl₂Fe³⁺(Si₂O₇)(SiO₄)O₂
Availability: Sold
Size: 2 x 1.5 x 1 cm - Thumbnail
Tagged: REE mineral

Dark brown to black metamict mass of Askagenite-(Nd). This is the type and only locality.

Askagenite-(Nd)

Collection: William & Anne Cook Collection

Mineralpedia: View Askagenite-(Nd)
On Dakota Matrix: Previously Sold Askagenite-(Nd)
On Dakota Matrix: Other Available Askagenite-(Nd)
WebMineral: View Askagenite-(Nd)
Mindat: View Askagenite-(Nd)

SOLD

Bastnasite-(Ce)

#62350

Details
Data
Provenance
Resources

Locality: Bull Hill, Bear Lodge Mountains, Crook Co., Wyoming, United States
Formula: CeCO₃F
Availability: Sold
Size: 6 x 5.5 x 5.5 cm - Sm Cabinet
Tagged: carbonate , REE mineral

A resinous, metamict matrix with yellow pods of Bastnesite thought to be replacements after Burbankite. This deposit is still under exploration and processing studies by Rare Element Resources. The best source of information can be found in this pdf by Roche Engineering: Bear Lodge Project.