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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

Kozoite-(Nd) - BAC62391

Kozoite-(Nd) - BAC62391

Kozoite-(Nd)

#BAC62391

Details
Data
Provenance
Resources

Locality: Mitsukoshi, Hizen-cho, Karatsu City, Saga, Kyushu, Japan
Formula: NdCO₃(OH)
Availability: Sold
Size: 1.8 x 1 x 1 cm - Thumbnail
Tagged: carbonate , REE mineral

Pink crystal groups to less than 1mm. A three locality REE mineral.

Kozoite-(Nd)

Formula: NdCO₃(OH)
Crystal System: Orthorhombic
Crystal Habit: Microscopic Crystals
Luster: Vitreous - Dull
Color: pale pinkish purple, white
Class: Orthorhombic - Dipyramidal
Hardness: -

Collection: William & Anne Cook Collection

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

SOLD

Lanthanite-(Ce) - BAC62383

Lanthanite-(Ce) - BAC62383

Lanthanite-(Ce)

in Baryte - #BAC62383

Details
Data
Provenance
Resources

Locality: Nâm Xe REE deposit, Mt Fansipan, Phong Tho dist., Lai Châu Prov., Vietnam
Formula: Ce₂(CO₃)₃·8H₂O
Availability: Sold
Size: 2 x 2 x 1.8 cm - Thumbnail
Tagged: carbonate , REE mineral

Pinkish red granular Lanthanite in Baryte.

Lanthanite-(Ce)

Formula: Ce₂(CO₃)₃·8H₂O
Crystal System: Orthorhombic
Crystal Habit: Platy
Cleavage: Good, None, None
Luster: Vitreous (Glassy)
Color: colorless
Streak: white
Class: Orthorhombic - Dipyramidal
Fracture: Sectile
Hardness: 2.5

Collection: William & Anne Cook Collection

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

SOLD

Manganiandrosite-(La) - BAC62356

Manganiandrosite-(La) - BAC62356

Manganiandrosite-(La)

#BAC62356

Details
Data
Provenance
Resources

Locality: Grubependity Lake cirque, Maldynyrd range, Komi Republic, Russia
Formula: Mn²⁺La³⁺AlMn³⁺Mn²⁺(Si₂O₇)(SiO₄)O(OH)
Availability: Sold
Size: 0.9 x 0.7 x 0.5 cm - Thumbnail
Tagged: REE mineral

Red granular crystal grains to about 0.3mm pervasive in matrix.

Manganiandrosite-(La)

Formula: Mn²⁺La³⁺AlMn³⁺Mn²⁺(Si₂O₇)(SiO₄)O(OH)
Crystal System: Monoclinic
Luster: Vitreous (Glassy)
Color: reddish brown
Class: Monoclinic - Prismatic
Hardness: -

Collection: William & Anne Cook Collection

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

SOLD

Melanocerite-(Ce) - BAC62375

Melanocerite-(Ce) - BAC62375

Melanocerite-(Ce)

#BAC62375

Details
Data
Provenance
Resources

Locality: Cardiff Uranium mine, Haliburton Co., Ontario, Canada
Formula: (Ce,Ca)₅(SiO₄,BO4)₃(OH,0)
Availability: Sold
Size: 6 x 4.5 x 3 cm - Sm Cabinet
Tagged: REE mineral

Jet black tabular crystals 3 to 3.5cm long by 6mm wide in pink Microcline matrix.

Melanocerite-(Ce)

Formula: (Ce,Th,Ca)5(Si,B)3O12(OH,F)�n(H2O) (?)
Crystal System: Trigonal
Crystal Habit: Tabular, Metamict
Cleavage: None, None, None
Luster: Resinous
Color: brown, black, dark brown, reddish brown
Streak: light brown
Class: Trigonal
Fracture: Brittle - Conchoidal
Hardness: 5-6

Collection: William & Anne Cook Collection

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

SOLD

Melanocerite-(Ce) - BAC62376

Melanocerite-(Ce) - BAC62376

Melanocerite-(Ce)

#BAC62376

Details
Data
Provenance
Resources

Locality: Cardiff Uranium mine, Haliburton Co., Ontario, Canada
Formula: (Ce,Ca)₅(SiO₄,BO4)₃(OH,0)
Availability: Sold
Size: 5.5 x 3.5 x 3 cm - Sm Cabinet
Tagged: REE mineral

A course granular mass with dark purple Fluorite and dark brownish red crystal grains of Melanocerite generally around 5mm.

Melanocerite-(Ce)

Formula: (Ce,Th,Ca)5(Si,B)3O12(OH,F)�n(H2O) (?)
Crystal System: Trigonal
Crystal Habit: Tabular, Metamict
Cleavage: None, None, None
Luster: Resinous
Color: brown, black, dark brown, reddish brown
Streak: light brown
Class: Trigonal
Fracture: Brittle - Conchoidal
Hardness: 5-6

Collection: William & Anne Cook Collection

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

SOLD

Menzerite-(Y) - BAC62395

Menzerite-(Y) - BAC62395

Menzerite-(Y)

inclusions in Almandine - #BAC62395

Details
Provenance
Resources

Locality: Bonnet Island, Georgian Bay, Parry Sound dist., Ontario, Canada
Formula: Y₂CaMg₂Si₃O₁₂
Availability: Sold
Size: 5 x 3.5 x 4 cm - Miniature
Tagged: REE mineral
Special Info: Type Locality

Submicroscopic inclusions in Almandine. See Menzerite page on Mindat (click here). Menzerite is a two-locality mineral and this is the type locality.

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

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

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