RockWoof
Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Brownsville Mill (Producer)Brownsville Plant (Producer)Brownsville Minerals Plant (Producer)C E Minerals Chrome Plant + 1 more nearby (Past Producer)Brownsville Mill (Producer)Brazos Island (Unknown)
Past ProducerProducerProspectOccurrenceStatus unknown
6 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 3 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

C E Minerals Chrome Plant

We picked it because its USGS record mentions 1 gem or collectible mineral (Fluorite) and 1 of our card minerals overall. That ties with 3 other site(s), so we broke the tie by mine status (past producers first), then USGS record quality, then name. USGS lists it as past producer for Chromium. Minerals mentioned: Fluorite. Approx. location 25.927, -97.457. USGS record.

Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.

Field cards: what kind of sites?

7
Producer

Was producing when the record was made.

2
Unknown

Status not recorded.

1
Past Producer

Produced ore or material at some point in the past.

Status terms come from USGS MRDS records.

Mineral cards

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

No individual minerals are listed in these records.

Commodities

Fluorine-Fluorite 3Titanium 2Barium-Barite 2Manganese 2Phosphorus-Phosphates 1Chromium 1Bentonite 1Strontium 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Fosboro Phosphate PlantPhosphorus-Phosphates—Producer27.954, -97.402
Brownsville MillFluorine-Fluorite—Producer25.898, -97.503
Brazos IslandTitanium—Unknown26.029, -97.169
Padre IslandTitanium—Unknown26.113, -97.173
C E Minerals Chrome PlantChromium—Past Producer25.927, -97.457
Brownsville Minerals PlantBarium-Barite—Producer25.951, -97.451
Brownsville PlantManganese—Producer25.906, -97.483
Brownsville MillBentonite, Barium-Barite—Producer25.956, -97.405
Brownsville MillFluorine-Fluorite—Producer25.898, -97.498
Oglebay Norton Fluorspar PlantFluorine-Fluorite—Producer25.930, -97.455

Fossil collections

The Paleobiology Database lists 1 fossil collection records in Cameron County. These are research records, not public dig sites.

Nearby counties

Jim Hogg County · Duval County · Nueces County · San Patricio County · Webb County

Texas mineral guides

Back to all Texas counties.

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated