Where to Find Jasper in Texas

Texas jasper concentrates in two regions. The Llano uplift in Mason, Llano, and Burnet counties yields red and brown jasper from the Precambrian metamorphic core, sometimes with hematite banding. Brushy Creek and Honey Creek produce surface float that takes a glassy polish. The Trans-Pecos volcanic belt in Brewster and Presidio counties adds plume jasper, picture jasper, and brecciated material on the same ranches that produce the Big Bend agate. Bouquet jasper, a brecciated red-and-yellow variety, comes from the Stillwell Ranch country. Most Texas jasper ground is private, so plan around ranch fee-dig access. The most productive ground is in Llano uplift (Mason County), Brewster County volcanics, Stillwell Ranch (Brewster County).

Casual hand collection of common rocks and minerals like jasper is allowed on most BLM and U.S. Forest Service land in Texas, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.

Llano uplift (Mason County) is the standout. Other strong ground includes Brewster County volcanics, Stillwell Ranch (Brewster County).