ARSENIC, PYRARGYRITE, Storliden Mine, Vasterbotten, Sweden

Good, rich specimen of this semi-metal, dull black botryoids in contrasting white calcite, with minor reddish smears of pyrargyrite. Highly poisonous but safe to handle with common-sense precautions; do not chew this rock.

A) A large, 20mm clump of botryoids, 40x30x30mm, $25

B) A TN sized chunky mixture of black arsenic and white calcite, with minor filmy pyrargyrite (requires magnification to see), 30mm across, $12

C) A rich, almost solid lump of blackish-grey arsenic, with the calcite etched away. Micro fluorite cubes, very sparse micro sphalerite xls, and pyrargyrite films are present. There is some very limited micro xlization of the pyrargyrite, with at least one very minute red xl hiding in the crannies, and I suspect that some of the arsenic is crystallized as well. 40x40x20mm, $20