Siliceous concretion
Public domain (CC0). Shown at web resolution; the full download is at the foot of this page.

Siliceous concretion

TitleSiliceous concretion
ArtistCalcite - Associated Mineral
OriginNear Owyhee Dam and Lake Owyhee State Park, Oregon, United States, North America
Holding institutionSmithsonian Open Access
RightsPublic domain (CC0). Free to use for any purpose.

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