Bournonite
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Two very lustrous and smooth silvery crystals, perfectly formed on a bed of quartz points. The largest crystal is a twin shaped as an extruded cross. Bournonite is a very fragile species and it is rare to find crystals as intact as these on a matrix.
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Species
Added on11/10/2024
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Mineral guide
Learn about Bournonite
steel-gray to black sulfosalt famed for cogwheel twinning and metallic luster; prized by collectors for iconic gears and historic localities.
Regional guide
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