Where to Find Chalcedony in Texas
13 mapped chalcedony rockhounding spots in Texas, across 11 counties. Chalcedony is the parent name for microcrystalline quartz, including agate, jasper, carnelian, and chrysoprase. Texas rockhounding spans agate fields in the Big Bend region, petrified palm wood across the south and east, and limestone fossils across most of the state.
Map of 13 chalcedony rockhounding spots in Texas
Chalcedony by county in Texas
Counties ranked by number of chalcedony spots in our database.
Every chalcedony spot in Texas
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| General AreaCalamity Creek Road | Brewster County |
| 30.1676, -103.5948 | Public |
| Terlingua CreekJoe Moss Road | Brewster County | 29.2906, -103.5475 | Public | |
| W side of Glass Mountains | Brewster County |
| 30.3704, -103.4002 | Public |
| Quitman Mountains (South) | Hudspeth County | 31.1005, -105.5080 | Public | |
| Marfa and Ft. DavisTX 17 | Jeff Davis County | 30.4511, -103.9821 | Public | |
| H.D. House Ranch areaTX 72 | Live Oak County |
| 28.4665, -98.2258 | Public |
| Eagle PassStone Hill | Maverick County | 28.7373, -100.4712 | Public | |
| Chinati Mts | Presidio County | 30.0004, -104.3529 | Public | |
| Hinton CreekCo 364 | San Saba County | 31.0145, -99.0645 | Public | |
| Rio Grande | Starr County | 26.3624, -98.8352 | Public | |
| Btwn Groveton & Trinity | Trinity County | 31.0331, -95.2220 | Public | |
| Rio Grande River AreaRio Grande Vega Trail | Webb County | 27.4979, -99.4922 | Public | |
| LopenoEl Tigre Road | Zapata County | 26.7131, -99.1313 | Public |
Chalcedony in Texas FAQ
Where can I find chalcedony in Texas?+
RockHoundR tracks 13 chalcedony spots in Texas, spread across 11 counties. The strongest concentration is in Brewster County.
Is collecting chalcedony legal in Texas?+
Casual hand collection of common rocks and minerals like chalcedony 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.
What is the best chalcedony location in Texas?+
Brewster County has the most chalcedony spots in our database for Texas. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for chalcedony
Hunt chalcedony in Texas on the map
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