This specimen of calcite has second generation rose pink crystals of cobaltoan
calcite with stepped trigonal terminations to 1.2 cm
Origin: Aghbar Mine, Bou Azzer, Morocco
Sample size: 5.5 x 3.5 x 2.7 cm (top/2nd row), 4.5 x 3.7 x 3 cm (3rd/bottom
row)
Origin: Dal Negorsk, Primorskiy Kray, Russia
Sample size: 3.6 x 3.3 x 2.4 cm
Calcite twin, this form of twinning in calcite crystals is rare with (10-11)
or (02-21) as twin planes.
Origin: Westfalen Mine, Rio Grande do Sol, Brazil
Sample size: 2.7 x 2.1 x 0.7 cm
This clam shell -species Mercenaria permagna - is replaced by calcite crystals
with scalenohedral form.
Origin: Rucks Pit, Okeechobee Co., Florida, U.S.A.
Sample size: 12 x 8.5 x 4.7 cm
Cobaltoan calcite
Origin: Kolwezi, Dem. Rep. of the Congo
Sample size: 4.8 x 3.5 x 3.1 cm
This specimen is comprised of calcite crystals which are included with
chalcanthite.
Origin: Canaveille, Pyrenee Mountains, France
Sample size: 8.5 x 5.5 x 4.3 cm
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