Quartz and Calcite on Pyrrhotite from Russia DS2211 aquamarine The structures were empty tubes

The structures were empty tubes

this natural citrine tower has great color

are highly prized

in Jurassic limestone from about 160 million years ago

Quartz and Calcite on Pyrrhotite from Russia DS2211 aquamarine The structures were empty tubesQuartz and Calcite on Pyrrhotite from Russia Approx. Dimensions: 4x4. 25x3 inches Approx. Weight: 646 grams Locality: Nikolaevskiy Mine, Dalnegorsk, Primorskiy Kray, Russia This specimen is a very heavy piece due to the large makeup of pyrrhotite, with calcite and quartz perched atop. The calcite is fluorescent, and overall this specimen is in excellent condition. The Nikolaevskiy Mine, located in the Dalnegorsk mining district of Russia, is a world