5.8" Graveyard Plume Agate Slab - Eastern Oregon

This is a gorgeous specimen of Graveyard Plume agate from the Owyhee Mountains in far Eastern Oregon. It is polished on one side and as-cut on the other.

This specimen comes with an acrylic display stand.

Long known for its beautiful "plume" inclusions that look like moss or snow-covered trees, agate from this area comes from just a couple of small mines. Plumes or dendrites that occur within rock are most often a result of intruding (percolating) mineral solutions that contained manganese and/or iron. These solutions can work their way through microscopic cracks in the rock, leaving behind a branching pattern throughout the agate. By an untrained eye, these can be mistaken for plant fossils within the rock.

Quartz var. Agate
Owyhee Mountains, Eastern Oregon
5.8" wide, .43" thick