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

Hockley Plant (Producer)Hockley Salt Mill (Producer)Houston Plant Bauxite (Past Producer)Vermiculite Products Plant + 2 more nearby (Producer)Pierce Junction Mine (Past Producer)Plant No. 2 (Producer)Southern Clay Products Inc (Producer)Houston Sulfur Plant (Producer)Pasadena Plant (Producer)Houston Barite Plant + 1 more nearby (Producer)Charter International Oil Co (Producer)Humble Dome Prospect + 1 more nearby (Occurrence)Galena Park Mill (Producer)(Facility) Atlantic Richfield Refinery (Plant)South Houston Salt Dome (Occurrence)Champion Paper (Producer)Armco Steel Corp + 1 more nearby (Producer)Wallisvill Road Barite Plant (Producer)Webster Salt Dome (Occurrence)Deer Park Sulfur Plant (Producer)(Facility) Exxon Baytown Refinery + 1 more nearby (Plant)
Past ProducerProducerProspectOccurrenceStatus unknown
21 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Field cards: what kind of sites?

20
Producer

Was producing when the record was made.

3
Occurrence

The mineral was noted here, without development.

2
Past Producer

Produced ore or material at some point in the past.

2
Plant

A processing plant site.

Status terms come from USGS MRDS records.

Minerals recorded here

Halite 4Anhydrite 1Gypsum 1

Commodities

Sulfur 8Barium-Barite 6Halite 3Bentonite 2Salt 2Phosphorus-Phosphates 2Vermiculite 1Calcium 1Strontium 1Silica 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Humble Dome ProspectSulfurAnhydrite, Gypsum, HaliteOccurrence30.004, -95.243
Pierce Junction MineHaliteHalitePast Producer29.633, -95.440
South Houston Salt DomeHaliteHaliteOccurrence29.667, -95.234
Webster Salt DomeHaliteHaliteOccurrence29.534, -95.117
Vermiculite Products PlantVermiculite—Producer29.787, -95.431
Houston Barite PlantBarium-Barite—Producer29.791, -95.293
Champion PaperCalcium—Producer29.805, -95.213
(Facility) Exxon Baytown RefinerySulfur—Plant29.740, -95.003
Houston Barite,PlantStrontium, Bentonite, Barium-Barite—Producer29.777, -95.280
Houston Sulfur PlantSulfur—Producer29.757, -95.347
Galena Park MillBarium-Barite—Producer29.732, -95.250
Plant No. 2Barium-Barite—Producer29.756, -95.399
Wallisvill Road Barite PlantBarium-Barite—Producer29.827, -95.118
Hockley PlantSalt—Producer30.027, -95.851
Vestal PitSilica—Producer30.012, -95.229
Deer Park Sulfur PlantSulfur—Producer29.719, -95.115
Charter International Oil CoSulfur—Producer29.719, -95.270
(Facility) Atlantic Richfield RefinerySulfur—Plant29.715, -95.233
Pasadena PlantPhosphorus-Phosphates—Producer29.708, -95.317
Armco Steel CorpIron—Producer29.753, -95.196
Hockley Salt MillSalt—Producer29.964, -95.840
Houston Plant BauxiteAluminum—Past Producer30.084, -95.439
Chromalloy American CorpBarium-Barite—Producer29.795, -95.430
Pasadena PlantPhosphorus-Phosphates—Producer29.741, -95.194
Signal Sulfur PlantSulfur—Producer29.768, -95.441
Southern Clay Products IncBentonite—Producer29.776, -95.355
Baytown Sulfur PlantSulfur—Producer29.754, -95.025

Fossil collections

The Paleobiology Database lists 4 fossil collection records in Harris County. These are research records, not public dig sites.

Nearby counties

Chambers County · Fort Bend County · Galveston County · Liberty County · Wharton County

Texas mineral guides

Back to all Texas counties.

Related articles

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