underthescopeminerals:Cobaltoan Calcite, KolweziteLocality:Katanga (Shaba), Democratic Republic of C
underthescopeminerals:Cobaltoan Calcite, KolweziteLocality:Katanga (Shaba), Democratic Republic of Congo (Zaïre)Well formed Cobaltoan Calcite crystals with spherical green aggregates of Kolwezite, which crystallized heterogeneity Copyright: Leonardus -- source link