Historic Peruvian Bournonite, Chalcopyrite & Quartz – Ex-Richard V. Cain Collection

Historic Peruvian Bournonite from the Prestigious Richard V. Cain Collection

This exceptional bournonite specimen carries remarkable provenance as part of the historic Richard V. Cain Collection of London, one of the most respected private mineral collections of the 20th century. Featuring bournonite with chalcopyrite and quartz from Peru, this piece represents both mineralogical significance and collecting history, making it a treasure for serious collectors who value documented provenance and rare sulfide minerals.

Specimen Details

Minerals: Bournonite, Chalcopyrite, Quartz
Weight: 276 grams (approximately 9.7 ounces)
Dimensions: Approximately 10 cm (4 inches) at longest measurement
Locality: Peru
Provenance: Ex-Richard V. Cain Collection, London

Mineralogical Characteristics

Bournonite (lead copper antimony sulfide) is a relatively rare sulfide mineral prized by collectors for its distinctive crystal forms and metallic luster. This specimen displays characteristic bournonite crystals accompanied by brassy chalcopyrite (copper iron sulfide) and translucent quartz, creating a classic sulfide-quartz association typical of Peruvian hydrothermal deposits. The combination of these three minerals demonstrates the complex chemistry of the mineralizing fluids that formed the deposit.

Richard V. Cain Collection Provenance

Richard V. Cain assembled one of London's most distinguished private mineral collections during the mid-to-late 20th century, focusing on rare species and exceptional examples from worldwide localities. Specimens from the Cain Collection are highly valued by collectors due to their documented history and the collector's reputation for acquiring only quality material. This ex-Cain Collection specimen carries the prestige of this historic collection, adding significant value beyond its mineralogical merits.

All specimens include labels bearing the mineral names, origin, and provenance documentation including Richard V. Cain Collection history. Each piece is handpicked for quality and uniqueness.