Keith F. Compton

Smithsonite

Silver, Acanthite

Smoky Quartz

Ferberite with Quartz

Barite

Amethyst

Calcite

Opal

Rhodochrosite, Quartz

Erythrite

Rhodonite, Galena, Calcite

Schorl

Galena

Fluorite

Calcite

Cassiterite

Pyromorphite, Malachite

Calcite (Iron-rich), Aragonite

Anglesite, Cerussite

Rhodochrosite, Quartz

Galena, Quartz

Cassiterite pseudomorph after Orthoclase

Wulfenite