Where to Find Silicified Mastodon Tusks in the United States
1 mapped silicified mastodon tusks spots across 1 U.S. states. Silicified Mastodon Tusks is reported at multiple rockhounding spots across the United States. The map below shows where collectors most often find it on legal public ground.
Map showing where to find silicified mastodon tusks across the United States, with 1 mapped spots
Top states for silicified mastodon tusks
States ranked by number of silicified mastodon tusks spots in our database. States in bold link to a focused silicified mastodon tusks-in-state list.
Every silicified mastodon tusks spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Keya Paha River | Keya Paha County |
| 42.9895, -99.6252 | Public |
Silicified Mastodon Tusks rockhounding FAQ
Where is the best place to find silicified mastodon tusks in the U.S.?+
Nebraska have the highest concentrations of silicified mastodon tusks in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many silicified mastodon tusks rockhounding spots does RockHoundR track?+
1 mapped spots across 1 states. The app keeps these on a map alongside your private finds.
Can I legally collect silicified mastodon tusks on public land?+
Casual hand collecting of common rocks and minerals like silicified mastodon tusks is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always check with the managing agency before a trip.
How do I identify silicified mastodon tusks in the field?+
Field identification of silicified mastodon tusks comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt silicified mastodon tusks on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
