- Miniature, 4.0 x 3.3 x 1.5 cm
- Basin Creek placers, Cataract District (Comet District; Basin District), Jefferson Co., Montana, USA
A sculptural and highly unusual, layered nodule of botryoidal, lustrous, rich brown, cassiterite from a very uncommon Montana locality. This variety of cassiterite is called "stream tin," due to the rounded, stream-worn character of the cassiterite. Stream tin was named by Cornish miners from the streams, where the rich deposits were first found in Cornwall. This is excellent, old-time material from the Jaime Bird Collection.