Checkout

0 item @ $0.00

Home | My Cart | Login | Register

Recently Released New Additions

Hide Solds

Rare Minerals

Wednesday, 01 January 2025 06:00 PM

Introducing the "Rare Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including lizardite, olivenite, parafransoletite, schaurteite, schoderite, and scorzalite and more from places like Bobbio, Piacenza, Emilia-Romagna, Italy, Majuba Hill mine, Pershing Co., Nevada, United States, Tip Top mine, Custer Co., South Dakota, United States, Tsumeb mine, Tsumeb, Namibia, Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States, and Charles Davis Mine, Groton, Grafton Co., New Hampshire, United States.

SOLD

Lizardite

#BAC65207

Details
Data
Provenance
Resources

Locality: Bobbio, Piacenza, Emilia-Romagna, Italy
Formula: Mg₃Si₂O₅(OH)₄
Availability: Sold
Size: 2.4 x 2 x 1.2 cm - Thumbnail

Bubbly green masses of Lizardite, an alteration product of metamorphism. It is a fairly common serpentine.

Lizardite

Formula: Mg₃Si₂O₅(OH)₄
Crystal System: Triclinic
Cleavage: Perfect, None, None
Color: green, green blue, yellow, white
Streak: white
Class: Triclinic - Pinacoidal
Hardness: 2.5

Collection: William & Anne Cook Collection

Mineralpedia: View Lizardite
On Dakota Matrix: Previously Sold Lizardite
On Dakota Matrix: Other Available Lizardite
WebMineral: View Lizardite
Mindat: View Lizardite

SOLD

Olivenite

#JD65248

Details
Data
Provenance
Resources

Locality: Majuba Hill mine, Pershing Co., Nevada, United States
Formula: Cu₂AsO₄(OH)
Availability: Sold
Size: 7 x 6.5 x 3.5 cm - Sm Cabinet
Tagged: arsenate , copper

Incredible needle-like crystals groups to 1.2cm. Very nice piece!

Olivenite

Formula: Cu₂AsO₄(OH)
Crystal System: Monoclinic
Crystal Habit: Acicular to Prismatic, Radial, Fibrous
Cleavage: Indistinct, Indistinct, Indistinct
Luster: Vitreous - Greasy
Color: olive green, yellowish brown, dirty white, blackish green, liver brown
Streak: yellowish green
Geological Setting: In oxidized zone of copper and arsenate rich deposits.
Class: Monoclinic - Prismatic
Fracture: Brittle - Conchoidal
Hardness: 3

Collection: John Dagenais Collection

Mineralpedia: View Olivenite
On Dakota Matrix: Previously Sold Olivenite
On Dakota Matrix: Other Available Olivenite
WebMineral: View Olivenite
Mindat: View Olivenite

SOLD

Parafransoletite

#65223

Details
Data
Provenance
Resources

Locality: Tip Top mine, Custer Co., South Dakota, United States
Formula: Ca₃Be₂(PO₄)₂(PO₃OH)₂·4H₂O
Availability: Sold
Size: 2.5 x 1.6 x 1.7 cm - Thumbnail
Tagged: phosphate , beryllium , pegmatite mineral
Special Info: Type & Only Locality

White bladed crystals of extremely rare Parafransoletite to about 0.3mm in size. The crystals are hard to see since they occur with Englishite, another white, but pearly mineral. The black is a Mn oxide and there is a little Montgomeryite (pink) and Roscherite. All the minerals occur on light green Beryl.

Parafransoletite

Formula: Ca₃Be₂(PO₄)₂(PO₃OH)₂·4H₂O
Crystal System: Triclinic
Crystal Habit: Spear Head, Wheat Sheaf, Radial
Cleavage: None, None, None
Luster: Vitreous - Silky
Color: colorless, white
Streak: white
Class: Triclinic - Pinacoidal
Hardness: 2.5

Special Info: Type & Only Locality

Mineralpedia: View Parafransoletite
On Dakota Matrix: Previously Sold Parafransoletite
On Dakota Matrix: Other Available Parafransoletite
WebMineral: View Parafransoletite
Mindat: View Parafransoletite

SOLD

Schaurteite

#JD65245

Details
Data
Provenance
Resources

Locality: Tsumeb mine, Tsumeb, Namibia
Formula: Ca₃Ge⁴⁺(SO₄)₂(OH)₆·3H₂O
Availability: Sold
Size: 1 x 0.5 x 0.6 cm - Thumbnail
Special Info: Type Locality

White flakey crystals less than 0.5mm on Germanite matrix.

Schaurteite

Formula: Ca₃Ge⁴⁺(SO₄)₂(OH)₆·3H₂O
Crystal System: Hexagonal
Crystal Habit: Acicular, Fibrous
Luster: Silky
Color: silky white
Streak: white
Class: Hexagonal - Ditrigonal Dipyramidal
Hardness: 2.5

Collection: John Dagenais Collection
Special Info: Type Locality

Mineralpedia: View Schaurteite
On Dakota Matrix: Previously Sold Schaurteite
On Dakota Matrix: Other Available Schaurteite
WebMineral: View Schaurteite
Mindat: View Schaurteite

SOLD

Schoderite

#DO65074

Details
Data
Provenance
Resources

Locality: Union Carbide mine, Wilson Springs, Garland Co., Arkansas, United States
Formula: Al₂(PO₄)(VO₄)·8H₂O
Availability: Sold
Size: 0.3 x 0.2 x 0.2 cm - Thumbnail
Tagged: phosphate , vanadium

Nice little specimen of rare Schoderite on the end of a toothpick. Note the fantastic photo on Mindat of Schoderite by Jason Smith. His is a different specimen, of course, but you get an idea how the mineral actually looks. I don't think this specimen is a good however.