Acanthite
A specimen of the mineral acanthite (silver sulphide) From Wheal Newton, Harrowbarrow, near Calstock, Cornwall. These are pseudo-crystals, paramorphous after argentite which is only stable at higher temperatures
Picture No
10705072
Media ID
47571992
Size
2654px x 3293px
(5.1MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
