Calcite, Magnetite
Dächelsberg, Niederbachem, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
Greenish, globlar aggregates of calcit in a geode in basalt rock. The matrix rock also hosts some lustrous, black magnetite inclusons. Old find.
© Dr. Marcus Lueg 2016