- Bournonite, Quartz
- Small Cabinet, 6.5 x 4.8 x 4.1 cm
- Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Menheniot Area, Liskeard District, Cornwall, England, UK
An old-time, classic specimen from the Herodsfoot Mine of Cornwall. Lightly iridescent bournonite cogwheels are aesthetically set on the crest and sides of a mounded matrix of lustrous quartz crystals. Historic specimens of this quality were recovered from 1850-1875. Ex. Borland Collection.