Works of "Research Collection"
Place Collected: Alexo Mine
Place Collected: west side of mtn.
Place Collected: Cerhovice
Place Collected: Montserrat Mine
Place Collected: Poorhouse Quarry
Place Collected: Sing Sing Quarry
Place Collected: Poorhouse Quarry
Place Collected: Washington District
Place Collected: Llallagua
Place Collected: Narssarssuk Pegmatite
Place Collected: Madagascar