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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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Monazite-(La) - BAC62397

Monazite-(La) - BAC62397

Monazite-(La)

#BAC62397

Details
Data
Provenance
Resources

Locality: Shinkolobwe, Katanga, Democratic Republic of Congo
Formula: LaPO₄
Availability: Sold
Size: 4 x 2.5 x 1 cm - Miniature
Tagged: phosphate , REE mineral

Massive beige Monazite.

Monazite-(La)

Formula: LaPO₄
Crystal System: Monoclinic
Crystal Habit: Crystalline - Fine, Twinning Common
Cleavage: Distinct, Indistinct, None
Luster: Adamantine - Resinous
Color: brown, brown, yellowish brown, pink, yellow
Streak: grayish white
Class: Monoclinic - Prismatic
Fracture: Conchoidal
Hardness: 5-5.5

Collection: William & Anne Cook Collection

Mineralpedia: View Monazite-(La)
On Dakota Matrix: Previously Sold Monazite-(La)
On Dakota Matrix: Other Available Monazite-(La)
WebMineral: View Monazite-(La)
Mindat: View Monazite-(La)

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Monazite-(Nd) - BAC62396

Monazite-(Nd) - BAC62396

Monazite-(Nd)

with Parisite-(Nd) - #BAC62396

Details
Data
Provenance
Resources

Locality: Kangankunde Carbonatite Complex, Balaka, Southern Region, Malawi
Formula: NdPO₄
Availability: Sold
Size: 2.5 x 2.2 x 2 cm - Thumbnail
Tagged: phosphate , REE mineral

Bottle green subhedral Monazite to 3-4mm associated with dark brown Parizite.

Monazite-(Nd)

Formula: NdPO₄
Crystal System: Monoclinic
Crystal Habit: Crystalline - Fine, Twinning Common
Cleavage: Distinct, Indistinct, None
Luster: Adamantine - Resinous
Color: brown, red, yellow, orange
Streak: grayish white
Class: Monoclinic - Prismatic
Fracture: Conchoidal
Hardness: 5-5.5

Collection: William & Anne Cook Collection

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

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Synchysite-(Y) - BAC62386

Synchysite-(Y) - BAC62386

Synchysite-(Y)

#BAC62386

Details
Data
Provenance
Resources

Locality: Scrub Oak mine, Morris Co., New Jersey, United States
Formula: CaY(CO₃)₂F
Availability: Sold
Size: 4.5 x 2.5 x 2 cm - Miniature
Tagged: carbonate , REE mineral
Special Info: Type Locality

Red anhedral crystals to 4mm in glassy matrix.

Synchysite-(Y)

Formula: CaY(CO₃)₂F
Crystal System: Monoclinic
Crystal Habit: Massive
Cleavage: Distinct, None, None
Luster: Earthy (Dull)
Color: reddish brown
Streak: brown
Class: Monoclinic - Prismatic
Hardness: 6-6.5

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

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

Tengerite-(Y) - 59814

Tengerite-(Y) - 59814

Tengerite-(Y)

#59814

$50.00 - Available
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Details
Data
Provenance
Resources

Locality: Paratoo Cu mine, Mt Lofty Ranges, South Australia, Australia
Formula: Y₂(CO₃)₃·2-3H₂O
Availability: Available
Price: $50.00
Size: 4.5 x 5 x 1.3 cm - Miniature
Tagged: carbonate , REE mineral

Pearly white platy crystals in scattered singles and some radial groups. Most of the coverage is on one side.

Tengerite-(Y)

Formula: Y₂(CO₃)₃·2-3H₂O
Crystal System: Orthorhombic
Crystal Habit: Fibrous, Pulverulent
Luster: Vitreous - Dull
Color: white
Streak: white
Class: Orthorhombic - Pyramidal
Hardness: -

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

SOLD

Thalenite-(Y) - BAC62385

Thalenite-(Y) - BAC62385

Thalenite-(Y)

#BAC62385

Details
Data
Provenance
Resources

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: View Thalenite-(Y)

SOLD

Wakefieldite-(Y) - BAC62357

Wakefieldite-(Y) - BAC62357

Wakefieldite-(Y)

#BAC62357

Details
Data
Provenance
Resources

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: View Wakefieldite-(Y)

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