The Texas Antiquities Code: What Metal Detectorists and Fossil Hunters Need to Know

The Texas Antiquities Code exists because of one lawsuit. In 1967 an Indiana company, Platoro Ltd., began salvaging the Espíritu Santo, one of three Spanish ships that went down off Padre Island on April 29, 1554. The state went to court, won an injunction, seized the recovered artifacts and spent 17 years in litigation before it was awarded them in 1984. The Legislature passed the Antiquities Code in 1969, in the middle of that fight, so that nobody would have to argue the question again.

The result is Chapter 191 of the Texas Natural Resources Code. For a detectorist it does two separate things. It declares certain things on public land the property of the State of Texas, and it makes removing them without a Texas Historical Commission (THC) permit a crime. It does not decide whether you can turn a detector on in a given place. That is the landowner's rule: a city beach ordinance, a state-park regulation or a federal regulation. Most confusion about "is metal detecting legal in Texas" comes from mixing those two layers up. Our Texas metal detecting overview covers the landowner layer beach by beach; this guide covers the ownership layer.

What the Code doesn't cover

Modern losses. Section 191.091 is about pre-twentieth-century wrecks and treasure. A ring lost last summer, a phone, or coins from recent decades are not landmark material. Nothing in Chapter 191 stops you keeping them, though the local rule on where you may detect and dig still applies. The harder cases are items that are old but not obviously pre-1900. The statute gives no age cut-off for § 191.092 artifacts, so if something looks historic, treat it as the state's until the THC says otherwise.

Fossils. The Code and the THC's rules are written around human activity. 13 TAC § 26.3 defines an archeological site as a place "containing evidence of prehistoric or historic human activity," and an artifact as an object that relates "to human life and culture." Neither the statute sections nor those definitions mention fossils. So on Texas public land, fossil collecting is controlled by the land manager's own rule instead: state parks ban taking any fossil without a permit under 31 TAC § 59.134(l)(2), Corps lakes ban removing "paleontological resources" without written permission under 36 CFR 327.14(a), and national park units ban it under 36 CFR 2.1. Section 191.092 does list sites of "scientific" interest, so a significant fossil locality on public land could in principle be designated as a landmark, but the Code gives no general fossil rule.

Private land. The Code does not make artifacts on private land state property. A private site can become a landmark only with the landowner's written consent, recorded in the county deed records (§ 191.094(b)–(c)). The one general private-land offense is § 191.133: entering someone else's enclosed land without consent to dig, remove or damage artifacts, sites or burials.

Penalties and who can enforce them

A violation is a misdemeanor, "punishable by a fine of not less than $50 and not more than $1,000, by confinement in jail for not more than 30 days, or by both," and "each day of continued violation" is a separate offense (§ 191.171). The fine is small, but it's rarely the only exposure. The Attorney General can seek restraining orders, injunctions and the return of items taken (§ 191.172), and any Texas citizen can sue for the same relief (§ 191.173). A detectorist who posts a colonial-era coin from a Texas beach online is inviting exactly that.

In a state park, TPWD's own rule is enforced separately: violating 31 TAC § 59.134 is a Class C Parks and Wildlife Code misdemeanor. In a national park unit, federal penalties apply and ARPA can add much larger ones for archaeological resources. See the Padre Island National Seashore page for how that works on the coast where the 1554 fleet wrecked.