Place Collected: from float in northern Nevada

Place Collected: Mosquito Creek

Place Collected: Zmeyewskaja-goro, Altai Mtns.

Place Collected: western Transylvanian gold district, Muntii Apuseni (Apuseni Mtns.)

Place Collected: western Transylvanian gold district, Muntii Apuseni (Apuseni Mtns.)

Place Collected: western Transylvanian gold district, Muntii Apuseni (Apuseni Mtns.)

Place Collected: Siberia

Place Collected: St. Gothard

Place Collected: Unknown

Place Collected: Campana Mines

Place Collected: Altai Mtns.

Place Collected: Ural Mtns.