Rockhounding in San Jacinto County, Texas

1 mapped rockhounding spot in San Jacinto County. Most commonly produces agate, carnelian, jasper, petrified palm wood.

San Jacinto County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Polished petrified palm wood showing its rod pattern, the Texas state stone found in Sam Houston National Forest — Sam Houston National Forest (Double Lake)San Jacinto County, Texas

Minerals reported in San Jacinto County

Standout in San Jacinto County

Hand-picked spot in San Jacinto County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Sam Houston National Forest (Double Lake)
Public
San Jacinto County
Sam Houston National Forest carries petrified palm wood, the official Texas state stone since 1969, along with agate, jasper, and chalcedony weathered from young Gulf Coastal Plain gravels. The US Forest Service permits personal collection of common lapidary minerals and petrified wood here under a free use permit. Vertebrate fossils and artifacts are excluded.
Petrified Palm Wood, Petrified Wood, Agate, Jasper

Spots in San Jacinto County

Spot	Minerals	Coordinates	Access
Sam Houston National Forest (Double Lake)	Petrified Palm Wood Petrified Wood Agate Jasper Carnelian	30.5485, -95.1306	Public

Neighboring counties in Texas

Adjacent rockhounding counties, ranked by how close their centroids sit to San Jacinto County. A natural extension if San Jacinto County is already on your trip plan.

San Jacinto County FAQ

Where can I rockhound in San Jacinto County, Texas?+

RockHoundR tracks 1 rockhounding spot in San Jacinto County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in San Jacinto County?+

Spots in San Jacinto County most often produce Agate, Carnelian, Jasper, Petrified Palm Wood, Petrified Wood. Individual spots can vary widely.

Are these San Jacinto County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.

Plan a San Jacinto County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.