Mineral Specimen and Product Inventory Search
- Availability
- Available
- Price
- $25.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- KCa4Si8O20F·8H2O
- Size
- 2 x 2 x 1.5 cm - Thumbnail
Pink platy crystals. The group is 1.3cm.
- Availability
- Available
- Price
- $40.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- Mg2Mn3+O2(BO3)
- Size
- 1.3 x 0.5 x 0.4 cm - Thumbnail
Black needles to 3mm. Only two localities reported thus far; Langban and Nordmark districts. Fredrikssonite is a borate of the Ludwigite group.
- Availability
- Available
- Price
- $75.00
- Reduced Price
- $40.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- Ca2Mn2+7Si10O28(OH)2·5H2O
- Size
- 5.5 x 4.5 x 2 cm - Sm Cabinet
Stellate crystals embedded in matrix to 1cm.
- Availability
- Available
- Price
- $125.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- Mg2Mn3+O2(BO3)
- Size
- 2.2 x 1.7 x 1.3 cm - Thumbnail
- Special Info
- Type & Only Locality
Acicular crystals to 4mm in matrix. Excellent specimen of this very rare borate from the only locality in the world.
- Availability
- Available
- Price
- $25.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- (Mg,Mn2+)2(Mn3+,Sb5+)O2(BO3)
- Size
- 2.3 x 1.7 x 2 cm - Thumbnail
Black prismatic crystals embedded in matrix.
- Availability
- Available
- Price
- $25.00
- Locality
- Långban, Filipstad, Värmland, Sweden
- Formula
- (Mg,Mn2+)2(Mn3+,Sb5+)O2(BO3)
- Size
- 2.3 x 1.5 x 1 cm - Thumbnail
- Special Info
- Type Locality
Tiny black needles in matrix.
