S24016 – Tetrahedrite
This famous English locality has produced some of the most stylish chalcopyrite over tetrahedrite specimens. Such brilliantly marked iridescent chalcopyrite selectively coating modified tetrahedral crystals is a Cornwall classic. Fine Cornish piece returning after decades from collector Rosa Nowels.
S22433 – Tetrahedrite
This famous English locality has produced some of the finest chalcopyrite over tetrahedrite specimens. Such brilliantly marked iridescent chalcopyrite selectively coating modified tetrahedral crystals is a Cornwall classic.
S20546 – Tetrahedrite
This snazzy and unusual bluish iridescent chalcopyrite over tetrahedrite is most pleasing. They give off the appearance of an electroplated coating. Combine this with famous locality, and we have an outstanding thumbnail.
S20551 – Tetrahedrite
This sparkling iridescent layer of chalcopyrite selectively coats modified tetrahedral crystals on white quartz. A well-known identity from the Herodsfoot mine that has produced a soup of mineralogy, and here in excellent condition.
S7059 – Bournonite
This bournonite is from an important early find in mineral collecting history. The cogwheel twin is of good size, 4.3 x 3.2 cm, shows well from front or back, and comes with a British Museum (Natural History) and Don Boydston label.
