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Rare & Mixed Minerals

Thursday, 16 June 2022 06:00 PM

Introducing the "Rare & Mixed Minerals" gallery which is part of our New Additions galleries. This gallery contains mineral specimens for sale including kozyrevskite, lawsonite, leucophosphite, malachite, metacinnabar, and mimetite and more from places like Tolbachik Volcano, Kamchatka, Russia, Reed Station, Tiburon Peninsula, Marin Co., California, United States, Tip Top mine, Custer Co., South Dakota, United States, Tsumeb mine, Tsumeb, Namibia, Mount Diablo mine, Contra Costa Co., California, United States, and San Pedro Corralitos, Chihuahua, Mexico.

SOLD

Kozyrevskite

#57790

Details
Data
Provenance
Resources

Locality: Tolbachik Volcano, Kamchatka, Russia
Formula: Cu₄O(AsO₄)₂
Availability: Sold
Size: 1.8 x 1.4 x 1.1 cm - Thumbnail
Tagged: arsenate , copper
Special Info: Type Locality
Special Info: XRD Confirmed
Special Info: EDS Confirmed
Special Info: Author's Material

Bright green platy crystals throughout matrix. Very rich.This is author's study material from Dr. Igor Pekov. Kozyrevskite is dimorphous with Ericlaxmanite.

The exact locality is: Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka, Russia

Kozyrevskite

Special Info: Type Locality
Special Info: XRD Confirmed
Special Info: EDS Confirmed
Special Info: Author's Material

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

SOLD

Lawsonite

#RS58619

Details
Data
Provenance
Resources

Locality: Reed Station, Tiburon Peninsula, Marin Co., California, United States
Formula: CaAl₂Si₂O₇(OH)₂·H₂O
Availability: Sold
Size: 2.5 x 2 x 2.5 cm - Thumbnail
Special Info: Type Locality

Glassy light blue blocky crystals to 5mm with a green mica.

Lawsonite

Formula: CaAl₂Si₂O₇(OH)₂·H₂O
Crystal System: Orthorhombic
Crystal Habit: Prismatic, Tabular
Cleavage: Perfect, Perfect, Poor
Luster: Vitreous - Greasy
Color: colorless, white, gray, blue, pinkish
Streak: white
Class: Orthorhombic - Dipyramidal
Fracture: Brittle - Uneven
Hardness: 7.5

Collection: RC Stamberg Collection
Special Info: Type Locality

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

SOLD

Leucophosphite

with Hureaulite & Rockbridgeite - #58591

Details
Data
Provenance
Resources

Locality: Tip Top mine, Custer Co., South Dakota, United States
Formula: KFe³⁺₂(PO₄)₂(OH)·2H₂O
Availability: Sold
Size: 5.5 x 4.2 x 2.8 cm - Sm Cabinet
Tagged: phosphate , pegmatite mineral

Glassy green masses of Leucophosphite replacing Triphylite and purple Leucophosphite crystals to 3mm. Also within the cavity are light pink, sharp crystals of Hureaulite to 5mm and 1-3mm acicular, black crystals of Rockbridgeite.

Leucophosphite

Formula: KFe³⁺₂(PO₄)₂(OH)·2H₂O
Crystal System: Monoclinic
Cleavage: Indistinct, None, None
Luster: Vitreous - Dull
Color: brown, brownish yellow, colorless, greenish, white
Streak: white
Class: Monoclinic - Prismatic
Fracture: Brittle
Hardness: 3.5

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

Malachite

#RS58620

$85.00 - Available
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Details
Data
Provenance
Resources

Locality: Tsumeb mine, Tsumeb, Namibia
Formula: Cu₂CO₃(OH)₂
Availability: Available
Price: $85.00
Size: 4.5 x 2.5 x 1.5 cm - Miniature
Tagged: carbonate , copper
Special Info: Antique Specimen

Green Malachite from the collection of Herbert Maucher, the son of Wilhelm Maucher (1879 - 1930), the famed German mineral dealer. W. Maucher attended the Freiburg Mining Academy and the mineral Maucherite was named in his honor. More on Maucher can be read on the Mineralogical Label Archive.