Checkout

0 item @ $0.00

Home | My Cart | Login | Register

Recently Released Special Editions

Hide Solds

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 samarskite-(y), synchysite-(y), tengerite-(y), terbium oxide, and thulium oxide and more from places like Mitchell Co., North Carolina, United States, Platte Canyon, Jefferson Co., Colorado, United States, Scrub Oak mine, Morris Co., New Jersey, United States, Cardiff Uranium mine, Haliburton Co., Ontario, Canada, no locality.

SOLD

Samarskite-(Y)

#RS58161

Details
Data
Provenance
Resources

Locality: Mitchell Co., North Carolina, United States
Formula: (Y,Ce,U,Fe,Nb)(Nb,Ta,Ti)O₄
Availability: Sold
Size: 2.3 x 1.8 x 1.2 cm - Thumbnail
Tagged: REE mineral
Special Info: Radioactive!!

Dull black tabular crystal set to 2cm.

Samarskite-(Y)

Formula: (Y,Ce,U,Fe,Nb)(Nb,Ta,Ti)O₄
Crystal System: Orthorhombic
Crystal Habit: Massive
Cleavage: Imperfect, None, None
Luster: Vitreous - Resinous
Color: black, brownish, yellowish brown
Streak: reddish brown
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Conchoidal
Hardness: 5-6

Collection: RC Stamberg Collection
Special Info: Radioactive!!

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

SOLD

Synchysite-(Y)

#RS58162

Details
Data
Provenance
Resources

Locality: Platte Canyon, Jefferson Co., Colorado, United States
Formula: CaY(CO₃)₂F
Availability: Sold
Size: 3.3 x 3 x 1.7 cm - Miniature
Tagged: carbonate , REE mineral

Dark red massive piece.

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: RC Stamberg Collection

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)

SOLD

Synchysite-(Y)

#RS58165

Details
Data
Provenance
Resources

Locality: Scrub Oak mine, Morris Co., New Jersey, United States
Formula: CaY(CO₃)₂F
Availability: Sold
Size: 4 x 2 x 2.5 cm - Miniature
Tagged: carbonate , REE mineral
Special Info: Type Locality

Brick red grains to 5mm in magnetite.

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

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)

SOLD

Tengerite-(Y)

#RS58163

Details
Data
Provenance
Resources

Locality: Cardiff Uranium mine, Haliburton Co., Ontario, Canada
Formula: Y₂(CO₃)₃·2-3H₂O
Availability: Sold
Size: 7 x 4.5 x 3.2 cm - Sm Cabinet
Tagged: carbonate , REE mineral

White, flaky and pearly plates of Tengerite-(Y).

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: -

Collection: Robert J. Waidler Collection

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

Terbium Oxide

#58175

Details
Provenance
Resources

Locality: no locality
Formula: Tb₄O₇
Availability: Sold
Size: 3.5 x 1 x 1 cm - Miniature
Tagged: REE mineral

A small vial of terbium oxide concentrate. There are no approved IMA minerals which contain Terbium. However, there is one unknown possible gadolinite member published on Mindat with the chemical formula of Ca(Y,Ce,Nd,Tb,Er)Be₂Si₂(O,OH)₁₀