Carrollite In Calcite with minor Billietite (No. 3261-08172017)

Kamoto Principal Mine (Kamoto Fond Mine; Kamoto Mine), Kamoto, Kolwezi District, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)

10° 43' 20'' South , 25° 24' 7'' East

4.0 × 3.5 × 2.0 cm

A 1cm crystal of Carrollite in Calcite matrix. In the matrix there are some smaller Carrollite crystals. Before this find in 2000 Carrollite in big crystals were not known. The 1cm crystals has no damage and is mirror bright. There are numerous tiny amber colored Billietite crystals on the reverse side of this specimen, most in tabular squares, transparent.

 

Carrollite Formula: Cu(Co,Ni)2S4

Strunz: 2.DA.05

Hardness: 4.5 - 5.5

Color: Bright silver

Crystal System: Isometric

 

Calcite Formula: CaCO3

Strunz: 5.AB.05

Hardness: 3.0

Color: White

Crystal System: Trigonal

 

Billietite Formula: Ba(UO2)6O4(OH)6 · 4-8H2O

Strunz: 4.GB.10

Hardness: 0.0

Color: Amber-yellow

Crystal System: Orthorhombic

 

 

BOX AI

 

Ex: The Dutch Collectors Eye

Acquired: Aug. 17, 2017

Done