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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.

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Askagenite-(Nd) - BAC62379

Askagenite-(Nd) - BAC62379

Askagenite-(Nd)

#BAC62379

Details
Data
Provenance
Resources

Locality: Åskagen, 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)

Bastnasite-(Ce) - 61291

Bastnasite-(Ce) - 61291

Bastnasite-(Ce)

#61291

$50.00 - Available
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Details
Data
Provenance
Resources

Locality: Andakatany, Manandriana, Amoron'i Mania, Madagascar
Formula: CeCO₃F
Availability: Available
Price: $50.00
Size: 3 x 3 x 2.5 cm - Thumbnail
Tagged: carbonate , REE mineral

Shiny brick-red, cleavable mass with nice vitreous luster.

Bastnasite-(Ce)

Formula: CeCO₃F
Crystal System: Hexagonal
Crystal Habit: Prismatic, Massive - Granular
Cleavage: Imperfect, Indistinct, None
Luster: Vitreous - Greasy
Color: yellow, reddish brown
Streak: white
Class: Hexagonal - Ditrigonal Dipyramidal
Fracture: Uneven
Hardness: 4-5

Mineralpedia: View Bastnasite-(Ce)
On Dakota Matrix: Previously Sold Bastnasite-(Ce)
On Dakota Matrix: Other Available Bastnasite-(Ce)
WebMineral: View Bastnasite-(Ce)
Mindat: View Bastnasite-(Ce)

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Bastnasite-(Ce) - 62350

Bastnasite-(Ce) - 62350

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.

Bastnasite-(Ce)

Formula: CeCO₃F
Crystal System: Hexagonal
Crystal Habit: Prismatic, Massive - Granular
Cleavage: Imperfect, Indistinct, None
Luster: Vitreous - Greasy
Color: yellow, reddish brown
Streak: white
Class: Hexagonal - Ditrigonal Dipyramidal
Fracture: Uneven
Hardness: 4-5

Mineralpedia: View Bastnasite-(Ce)
On Dakota Matrix: Previously Sold Bastnasite-(Ce)
On Dakota Matrix: Other Available Bastnasite-(Ce)
WebMineral: View Bastnasite-(Ce)
Mindat: View Bastnasite-(Ce)

SOLD

Bastnasite-(Ce) - BAC62400

Bastnasite-(Ce) - BAC62400

Bastnasite-(Ce)

#BAC62400

Details
Data
Provenance
Resources

Locality: Sphene Ghari, Nanger, Afghanistan
Formula: CeCO₃F
Availability: Sold
Size: 1.3 x 1.6 x 1.2 cm - Thumbnail
Tagged: carbonate , REE mineral

Deep red hexagonal crystal, terminated.

Bastnasite-(Ce)

Formula: CeCO₃F
Crystal System: Hexagonal
Crystal Habit: Prismatic, Massive - Granular
Cleavage: Imperfect, Indistinct, None
Luster: Vitreous - Greasy
Color: yellow, reddish brown
Streak: white
Class: Hexagonal - Ditrigonal Dipyramidal
Fracture: Uneven
Hardness: 4-5

Collection: William & Anne Cook Collection

Mineralpedia: View Bastnasite-(Ce)
On Dakota Matrix: Previously Sold Bastnasite-(Ce)
On Dakota Matrix: Other Available Bastnasite-(Ce)
WebMineral: View Bastnasite-(Ce)
Mindat: View Bastnasite-(Ce)

SOLD

Britholite-(Y) - BAC62390

Britholite-(Y) - BAC62390

Britholite-(Y)

#BAC62390

Details
Data
Provenance
Resources

Locality: Burpala alkaline Massif, Eastern-Siberian region, Russia
Formula: (Y,Ca)₅(SiO₄)₃OH
Availability: Sold
Size: 5 x 3.5 x 4 cm - Miniature
Tagged: REE mineral

Dark red resinous and glassy crystalline mass.

Britholite-(Y)

Formula: (Y,Ca)₅(SiO₄)₃OH
Crystal System: Hexagonal
Crystal Habit: Prismatic, Massive
Cleavage: Imperfect, Imperfect, None
Luster: Resinous
Color: reddish brown, black
Streak: pale brown
Class: Hexagonal - Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 5

Collection: William & Anne Cook Collection

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

SOLD

Calkinsite-(Ce) - BAC62392

Calkinsite-(Ce) - BAC62392

Calkinsite-(Ce)

with Burbankite - #BAC62392

Details
Data
Provenance
Resources

Locality: Big Sandy Creek, Bearpaw Mts., Hill Co., Montana, United States
Formula: Ce₂(CO₃)₃·4H₂O
Availability: Sold
Size: 2.1 x 1.5 x 1.3 cm - Thumbnail
Tagged: carbonate , REE mineral

Yellow anhedral masses of Calkinsite-(Ce) with brown Burbankite. I am not sure what the white crystals are.

Calkinsite-(Ce)

Formula: Ce₂(CO₃)₃·4H₂O
Crystal System: Orthorhombic
Cleavage: Perfect, Distinct, None
Color: light yellow
Class: Orthorhombic - Disphenoidal
Hardness: 2.5

Collection: William & Anne Cook Collection

Mineralpedia: View Calkinsite-(Ce)
On Dakota Matrix: Previously Sold Calkinsite-(Ce)
On Dakota Matrix: Other Available Calkinsite-(Ce)
WebMineral: View Calkinsite-(Ce)
Mindat: View Calkinsite-(Ce)

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