Erdman Farm — Rockhounding in Karnes County, Texas
Erdman Farm is a mapped rockhounding spot in Karnes County, Texas. Reported finds include petrified palm wood, opalized wood, fossils. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Erdman Farm in Karnes County, Texas
Quick details
- Access
- Public area
- County
- Karnes County
- State
- Texas
- Nearest road
- FM 887
- Postcode
- 78113
- Coordinates
- 29.00051, -98.01955
Land & collecting status
Generally open to casual rockhounding
Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.
Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.
Sources & verification
Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.
State guidance last verified:
- Texas Parks and Wildlife Department
- Bureau of Economic Geology — Texas geology
- Big Bend National Park — Rules
- Community submissions reviewed against published agency rules
Found at Erdman Farm
Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.
- Petrified Palm WoodEncyclopedia →
- Opalized WoodEncyclopedia →
- FossilsEncyclopedia →
Nearby rockhounding spots
Other rockhounding spots within driving distance of Erdman Farm.
- Tessman FarmKarnes County, Texas · 9 mi awayAgatized Palm Wood
- H.D. House Ranch areaLive Oak County, Texas · 39 mi awayAgatized Fern Buds, Jasper, Chalcedony
- New BraunfelsComal County, Texas · 51 mi awayPetrified Wood
- Peach CreekGonzales County, Texas · 55 mi awayAgate, Petrified Wood
- MoultonLavaca County, Texas · 66 mi awayAgate, Petrified Wood
- MathisSan Patricio County, Texas · 67 mi awayMoss Agate
- Area surfaces all around SmithvilleBastrop County, Texas · 88 mi awayAgate, Petrified Wood
- E of AustinTravis County, Texas · 90 mi awayAgatized Wood, Petrified Palm Wood
Erdman Farm FAQ
Where is Erdman Farm?+
What rocks and minerals can you find at Erdman Farm?+
Is collecting allowed at Erdman Farm?+
How do I get to Erdman Farm?+
More rockhounding in Texas
See all 85 Texas spots →Open Erdman Farm on the map
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