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Dendritic Agate
Dendritic Agates have very thin tree-like inclusions of iron, manganese, or other metallic oxides that grow in natural fractures.
These inclusions called dendrites were named after the Greek word “Dendron” which means tree.
Most often they are in clear or milky agate or quartz and the dendrites are black, red or brown. The black is usually from manganese oxides and the red and brown come from iron oxides.
Moss inclusions are generally more mossy shaped, and plume inclusions are more solid and flower shaped.
Medicine Bow Dendritic Agate is a white agate with black manganese dendrites that comes from Wyoming.
Amethyst Sage Agate (sometimes called Purple Sage) is named for its purple/gray color and lovely manganese dendrites, and it is found in the Bilk Mountain range in Oregon.
Sowbelly Amethyst Agate from the Las Chance Mine in Creede, Colorado has dendritic formations of native silver scattered throughout the agate!
Saddle Mountain Picture Wood, well-known for its dendritic patterns and metallic iron inclusions, is found in the Columbia River Basalt Formation in Grant County, Washington.
OakRocks has been in the rock and mineral business for over 40 years.
We are a great source for Dendritic Agates