Langban Rare Minerals, Sweden

SOLD

Pyroaurite

#38751

Details
Data
Provenance
Resources

Locality: Långban, Filipstad, Värmland, Sweden
Formula: Mg₆Fe³⁺₂CO₃(OH)₁₆·4H₂O
Availability: Sold
Size: 5 x 5 x 2.5 cm - Miniature
Tagged: carbonate
Special Info: Type Locality

Blue plates of Pyroaurite from 1 to 3mm. Excellent specimen.

Pyroaurite

Formula: Mg₆Fe³⁺₂CO₃(OH)₁₆·4H₂O
Crystal System: Trigonal
Crystal Habit: Tabular, Fibrous
Cleavage: Perfect, None, None
Luster: Pearly
Color: brownish yellow, brown white, colorless, greenish, yellowish white
Streak: white
Class: Trigonal - Hexagonal Scalenohedral
Fracture: Flexible
Hardness: 2.5

Special Info: Type Locality

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

SOLD

Realgar

with unidentified - #PD38572

Details
Data
Provenance
Resources

Locality: Långban, Filipstad, Värmland, Sweden
Formula: AsS
Availability: Sold
Size: 4 x 2.5 x 2 cm - Miniature
Tagged: sulfide

Realgar is actually quite rare at Langban. This specimen is probably the second occurence as noted in the Langban book by Bollmark with Realgar in granular hematite. There are actually good prismatic crystal forms on this specimen one of which is a nicely terminated crystal sticking straight up. By all considerartions this is likely a very nice specimen from Langban. Associated with the Realgar are white, acicular or fibrous crystals within many of the vugs.

Realgar

Formula: AsS
Crystal System: Monoclinic
Crystal Habit: Prismatic, Massive - Granular, Druse
Cleavage: Good, None, None
Luster: Sub Metallic
Color: aurora red, orange yellow, dark red
Streak: orange
Class: Monoclinic - Prismatic
Fracture: Sectile
Hardness: 1.5-2

Collection: Phillips Collection

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

SOLD

Richterite

with "schefferite" - #PD38587

Details
Data
Provenance
Resources

Locality: Långban, Filipstad, Värmland, Sweden
Formula: Na(CaNa)Mg₅Si₈O₂₂(OH)₂
Availability: Sold
Size: 9.5 x 8 x 4 cm - Cabinet
Special Info: Type Locality

Orange platy crystals of Richterite embedded in matrix with some Diopside, var. schefferite. Krantz label. Possible Hedyphane also.

Richterite

Formula: Na(CaNa)Mg₅Si₈O₂₂(OH)₂
Crystal System: Monoclinic
Crystal Habit: Tabular
Cleavage: Perfect, Perfect, None
Luster: Vitreous (Glassy)
Color: blue, brown, brown red, gray violet, yellow
Streak: white
Class: Monoclinic - Prismatic
Fracture: Brittle - Uneven
Hardness: 6

Collection: Phillips Collection
Special Info: Type Locality

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

SOLD

Sahlinite

with Magnesioferrite - #PD38554

Details
Data
Provenance
Resources

Locality: Långban, Filipstad, Värmland, Sweden
Formula: Pb₁₄O₉(AsO₄)₂Cl₄
Availability: Sold
Size: 2 x 1.5 x 1 cm - Thumbnail
Tagged: arsenate
Special Info: Type Locality

Sahlinite is a rare lead arsenate found in only a handful of places on Earth. Langban is probably the better locality. This specimen contains numerous crystal grains to 1mm in throughout matrix with Magnesioferrite.