As highlighted in the photos

stalactites

Approx Weight (per piece): 6

and oxygen

Quenstedticeras and others of the Callovian Stage (161 m

Calcite Crystal | 96 gr | Limestone Quarry Povodje | Ljubljana, Slovenia Amphibole As highlighted in the photosThis is an attractive specimen of calcite crystals from Limestone Quarry, Povodje, Ljubljana, Slovenia. The entire top surface of the specimen is covered with many sharp well formed golden calcite crystals. It is in excellent condition. Calcite is found throughout the world in sedimentary, metamorphic, and igneous rocks. Some geologists consider it to be a "ubiquitous mineral" one that is found everywhere. Calcite is the principal constituent of