- Arsenopyrite, Fluorite
- Ashio mine, Ashio, Tochigi Prefecture, Kanto region, Honshu Island, Japan
- Small Cabinet, 5.4 x 4.3 x 2.3 cm
An old-time and showy Japanese combination specimen of sharp, lustrous, steel-gray arsenopyrite crystals covering matrix and attractively resting above a highly complimentary and contrasting band of intergrown, frosted, translucent, sea-green fluorite crystals. A fine, old specimen from a historic copper mine. Ex. John Ydren Collection.