Checkout

0 item @ $0.00

Home | My Cart | Login | Register

Recently Released New Additions

Hide Solds

Rare Minerals

Friday, 07 March 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 devilline, eurekadumpite, falkmanite, fluorite, gerhardtite, and johillerite and more from places like Grandview mine, Coconino Co., Arizona, United States, North Star mine, Lander Co., Nevada, United States, Bayerland mine, Pfaffenreuth, Upper Palatinate, Bavaria, Germany, Cresson mine, Cripple Creek, Teller Co., Colorado, United States, Likasi mine, Katanga, Democratic Republic of Congo, and Tolbachik Volcano, Kamchatka, Russia.

SOLD

Devilline

#65509

Details
Data
Provenance
Resources

Locality: Grandview mine, Coconino Co., Arizona, United States
Formula: CaCu₄(SO₄)₂(OH)₆·3H₂O
Availability: Sold
Size: 5 x 3.5 x 2.5 cm - Miniature
Tagged: copper

Deep green tabular crystals to 0.75mm with good coverage.

Devilline

Formula: CaCu₄(SO₄)₂(OH)₆·3H₂O
Crystal System: Monoclinic
Crystal Habit: Spherical, Platy, Tabular
Cleavage: Perfect, Distinct, None
Luster: Vitreous - Pearly
Color: blue, blue green, blue white, white, dark green
Streak: light green
Class: Monoclinic - Prismatic
Fracture: Uneven
Hardness: 2.5

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

SOLD

Eurekadumpite

with Quetzalcoatlite - #65604

Details
Data
Provenance
Resources

Locality: North Star mine, Lander Co., Nevada, United States
Formula: (Cu,Zn)₁₆(TeO₃)₂(AsO₄)₃Cl(OH)₁₈·7H₂O
Availability: Sold
Size: 2 x 2 x 1 cm - Thumbnail
Tagged: copper , tellurium

Bluish green spheroidal crystals to about 0.75mm with bladed sprays of Quetzalcoatlite

Eurekadumpite

Formula: (Cu,Zn)₁₆(TeO₃)₂(AsO₄)₃Cl(OH)₁₈·7H₂O

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

SOLD

Falkmanite

#65605

Details
Data
Provenance
Resources

Locality: Bayerland mine, Pfaffenreuth, Upper Palatinate, Bavaria, Germany
Formula: Pb₃Sb₂S₆
Availability: Sold
Size: 1.5 x 1 x 1.2 cm - Thumbnail
Tagged: sulfide

Compact acicular crystal group.

Falkmanite

Formula: Pb5Sb4S11
Crystal System: Monoclinic
Cleavage: Good, None, None
Luster: Metallic
Color: lead gray, pink brown
Streak: brownish gray
Class: Monoclinic
Hardness: 2-3

On Dakota Matrix: Previously Sold Falkmanite
On Dakota Matrix: Other Available Falkmanite
WebMineral: View Falkmanite
Mindat: View Falkmanite

SOLD

Fluorite

#65557

Details
Data
Provenance
Resources

Locality: Cresson mine, Cripple Creek, Teller Co., Colorado, United States
Formula: CaF₂
Availability: Sold
Size: 7 x 3.5 x 4 cm - Sm Cabinet

Very nice Fluorite specimen from this important gold-telluride locality. The glassy purple crystal measute up to 7mm.

Fluorite

Formula: CaF₂
Crystal System: Isometric
Crystal Habit: Crystalline - Coarse, Massive - Granular, Disseminated
Cleavage: Three perfect, octahedral cleavages.
Luster: Vitreous (Glassy)
Color: purple, clear, yellow, green, red, blue
Streak: white
Geological Setting: Occurs in a wide range of geologic environments including low temperature Missississippi Valley lead-zinc deposits, hydrothermal gold deposits, Alpine cleft metamorphic environments
Class: Isometric - Hexoctahedral
Fracture: Uneven
Hardness: 4