Reviews
4" Green Kolwezite on Vibrant Cobaltoan Dolomite - DR Congo
This is a sparkling cobaltoan (cobalt-bearing) dolomite crystal cluster that features aggregations of rare, sage green kolwezite over some of the dolomite crystals. It was collected from the Kansalawile Open Pit at the Tenk-Fungurume Mines, located in the Democratic Republic of the Congo.
Comes with an acrylic display stand.
Comes with an acrylic display stand.
About Kolwezite
Kolwezite is a rare copper-cobalt carbonate mineral that most frequently bears a green color, often olive or sage green. It is part of the rosasite group, a group of metal hydroxide carbonate minerals that includes more common species like malachite. Typically forming in oxidized copper-cobalt hydrothermal ore deposits, it earned its name from the locality it was discovered, Kolwezi in the Katanga Province of the D.R. Congo.
General Chemical Formula - CuCo(CO3)(OH)2
Kolwezite is a rare copper-cobalt carbonate mineral that most frequently bears a green color, often olive or sage green. It is part of the rosasite group, a group of metal hydroxide carbonate minerals that includes more common species like malachite. Typically forming in oxidized copper-cobalt hydrothermal ore deposits, it earned its name from the locality it was discovered, Kolwezi in the Katanga Province of the D.R. Congo.
General Chemical Formula - CuCo(CO3)(OH)2
About Cobaltoan Dolomite
Cobaltoan dolomite is a vibrant, pink to purplish-pink variety of the mineral dolomite that owes its striking coloration to traces of cobalt. This rare and visually distinctive mineral is typically found as crystalline coatings or rhombohedral crystals on matrix, often associated with cobalt-bearing minerals such as erythrite. The vivid hue and lustrous crystal surfaces make cobaltoan dolomite a favorite among mineral collectors. It is most famously sourced from the Katanga region in the Democratic Republic of the Congo, where some of the world’s finest specimens have been found. Though chemically similar to regular dolomite (CaMg(CO₃)₂), the substitution of cobalt in place of magnesium during formation gives it its unmistakable color.
General Chemical Formula - (Ca,Mg,Co)(CO₃)₂
Cobaltoan dolomite is a vibrant, pink to purplish-pink variety of the mineral dolomite that owes its striking coloration to traces of cobalt. This rare and visually distinctive mineral is typically found as crystalline coatings or rhombohedral crystals on matrix, often associated with cobalt-bearing minerals such as erythrite. The vivid hue and lustrous crystal surfaces make cobaltoan dolomite a favorite among mineral collectors. It is most famously sourced from the Katanga region in the Democratic Republic of the Congo, where some of the world’s finest specimens have been found. Though chemically similar to regular dolomite (CaMg(CO₃)₂), the substitution of cobalt in place of magnesium during formation gives it its unmistakable color.
General Chemical Formula - (Ca,Mg,Co)(CO₃)₂
$75
SPECIES
Kolwezite & Dolomite var. Cobalt-Bearing
LOCATION
Kansalawile Open Pit, Tenk-Fungurume Mines, Lualaba, Democratic Republic of the Congo
SIZE
4 x 1.95"
CATEGORY
ITEM
#347438
