Manganoan calcite
Manganoan calcite on
sphalerite
Manganoan calcite
Origin: Dalnegorsk, Primorskiy Kray, Russia
Sample size: 6.5 x 5.5 x 5 cm (top/2nd row), 8 x 7 x 4 cm (3rd/4th row), 12 x
7 x 7 cm (5th row), 11.5 x 7 x 5.5 cm (6th/bottom row)
Variety cobaltocalcite
Origin: Haute-Garonne, Pyrenees, France
Sample size: 5 x 4.2 x 1.8 cm
Manganoan calcite
Origin: Concepcion del Oro, Zacatecas, Mexico
Ex. Martin Zinn collection
Sample size: 9.1 x 7.2 x 6.2 cm
Cobaltian calcite with
malachite
Origin: Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga),
Congo (Zaïre)
Sample size: 3.5 x 2.7 x 2.3 cm
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