Call Today: (210) 378-2008  

Natural Mineral Wholesaler Supplier for Volcanic Ash Sodium Bentonite
Processing Plant Certified ISO-9001


We have an extensive infrastructure to efficiently service the demand of bentonite mineral used for sealing stock and recreational ponds, water treatment, cat litter, oil and gas wells, drilling mud, and other applications. Some of our main products, operations and processes involve extracting the mineral, processing, blending, formulate and blend with other ingredients, packaging, private label, storing and building ponds applying quality milled powder 200 mesh, granular or cluster, HY high yield gel and API spec. sodium bentonite  (Montmorillonite).

Serving Texas, Oklahoma, Louisiana, Arkansas and New Mexico. Our headquarters is located in San Antonio, Texas. And our main warehouse is located in Eagle Pass and Bulverde TX.


Mineral Bentonite Clay and Barite Supplier

We offer High-Quality Minerals – Sodium and Calcium Bentonite for applications such as Water Treatment, Pond Water Sealer,  High Yield Mud Slury, and Water Leaks.


Wholesale Distribution

We can supply milled mineral clay direct from our pressurized pig tanks or silo to load directly in a hopper pneumatic trailers for your logistics needs.

Manufacturing plant and packaging facility offers many different packaging options to satisfy our customers’ requirements and logistics needs.

Available packaging:

  • 7, 12, and 25 lbs. Bags.
  • 50 lbs. Plastic buckets
  • 50 lbs. bags.
  • 100 lbs. bags.
  • 2,000 lbs. Jumbo Bags.
  • 3,000 lbs. Super Sacks.
  • 3,400 lbs. Super Sacks.
  • Palletized and shrink-wrapped.

For drilling mud we offer a high yield sodium bentonite “Gel” quality API (American Petroleum Institute) specifications API 13A sec 9: HY high yield bentonite that yields over 200 BBL barrel (viscosifying capability) sodium bentonite.

High-grade sodium and calcium bentonite powder, granular or cluster form. Also, we offer special private label blended products for water treatment, cat litter, and other applications.

Milling process offering product in many different mesh sizes and forms as:

  • 200 mesh fine powder.
  • 30 ~ 40 mesh granular.
  • Mix mesh – granular from powder to bigger particles up to 30 mesh mix.
  • Cluster powders on particles from 10 to 50 mesh size.
  • Chips and granular.

Some of our formulas are blended with Polymers, minerals, and chemicals.  Our product variety is from mix mesh, granular, powder and cluster formulated products. Low grit, and minimum dust control (dust-free). Clumping cat litter odor control and dust free. (Premium high end quality cat litter formulated blended for odor control and no dust-no tracking)

We are pioneers in a new development of clustering powder clay offering a new way to mix the mineral with other ingredients and controlling the dust, flow and fluid of material. (Perfect for Water treatment plants and similar applications that require blending clays with other formulated ingredients to create a base or slurry to use on water treatment plants or mixers and filter press equipment).

Texas ranchers needing pond or water tank sealer in your ranch we can supply excellent quality sodium bentonite deliver at our main warehouse in Eagle Pass, TX.  Or Bulverde, TX. Warehouse. We also deliver directly to the final destination by pallet or full truckload using local trucking and logistics company services.

Please call us with your pond dimensions, type of soil and we can help you estimate the volume of bentonite needed for your tank.

The recommended amount of Pond Sealant (mix mesh granular) required for ponds:

Pounds of bentonite persquare foot area

  Soil conditions:                 square foot area:

  • Rock or Gravel        3.o to 3.5 lbs.
  • Clean Sand               2.5 ~ 3.0 lbs.
  • Silty Sand                 2.0 to 2.5 lbs.
  • Sandy Silt 20% +-    1.5 to 2.0 lbs.
  • Clay Soil                   1.0 to 1.5 Lbs.

(Please consider that if you use chips or granular bigger particles of bentonite you’ll need twice or three times as much volume of bentonite than using our special made blend mix mesh formula for ponds)

Farmers use bentonite to seal retention ponds and line canals. It works extremely well and is a natural mineral that will not harm the fish, wild life and plants.

Bentonite is the commercial name given to a whole range of clays having its origin since time immemorial. Bentonite clay is a product formed from volcanic ash. Our product is extracted from quality sodium bentonite mines.

Bentonite clay expands significantly when water is added to it; that is why people use sodium bentonite pond sealant liner while constructing new ponds or repairing old ponds. Pond water sealer, and water leaks.

Perfect to line the base of landfills to prevent sipping or leaking, slurry walls, impermeable barrier, waterproofing, water well plug.

Groundwater barrier – Low Permeability Barrier.

The clay self – sealing capability is by swelling on contact with water making it extremely useful as a barrier sealant.

Building Ponds Services, Water Treatment Clays, Industrial Equipments and Foundry applications:

Our water treatment division specializes on developing blended clays to treat contaminated water with oils, greases, soap, detergents, base chemicals, minerals, metals, inks, paint and other contaminants.

Bentonites for water treatment plants operating in manufacturer’s plants of corrugated cardboard, inks, laundries, mechanical shops, farms, food and beverage processing plants, etc.

Our team of engineers develops custom made formulas for your water problems and we also offer a complete line of industrial equipment for clay feeders, clay mixers and filter press equipment.

Our products are always available for immediate delivery from our Eagle Pass, TX. Warehouse and some of our distributors located in different areas. Available by the full truckload, partial load or by the pallet.

With over 60 years of accumulated experience from our company group we can help you on your clay application and needs, we have a team of engineers and the necessity laboratory equipment to offer consulting services.
Lone Star GTC is top quality provider for bentonite used in the foundry industry of steel & iron, which is extremely water-absorbent clay that will dry melted iron, and we are highly involved in the process (milling) and logistics of our minerals. We supervise every aspect, including the mining, milling, and loading of the product assuring our clients a high-quality product at a competitive price.

Bentonite for Metal casting Foundry Systems

In the iron and steel foundry industry, over 60% of metal castings are made using the green sand foundry molding process. Green sand is a specific combination of sand or aggre­gate, clay and water. The term “green sand” refers to the fact that the mold is in a green/uncured state.

We also offer quality cat litter bentonite, which is odor controlled, fast clumping, dust free, and easy to scoop, while being pet, planet, and people friendly. (Private label)

Many customers have used our clay to prevent water leaks, and pond liners.

Since our product contains no chemical additives and is a 100% natural substance, it is completely safe for use around fish, livestock, and plants.

Sodium Bentonite clay applications include drilling fluids used to aid and maintain stability and composition of drilling mud used on boreholes for oil, water, and gas.

Another important application for our product is for powder soap and powder detergents.


History of Bentonite.


An American geologist, identified water swelling clay in and around rocky formation near Fort Benton.

Bentonite was given the name “mineral soap.” However, interest in bentonite increased during the 1920s when researchers called bentonite a whole range of clay, which mainly consist of mineral montmorillonite and with lesser amounts of some other minerals such as pyrite, feldspar, quartz, and calcite.

Important Properties of Bentonite

The density of bentonite ranges between 2.2 and 2.8 g/cm3 depending upon its quality and the presence of other minerals. When wet, the volume is expanded almost 13 times more than when it is dry and several times its dry mass in water (depending on the quality of the bentonite). This property of bentonite clay is favorable for filling small and large voids or spaces. Pond sealer bentonite acts as a barrier between the water and the surface preventing seepage of water, which is an essential requirement while constructing any body of water, like ponds, dams, wells, and lagoons.

“Become a Satisfied Customer”

Laboratory test results are available on every lot that we deliver / Custom packaging is available.


If transportation is needed, we can arrange for pickup and delivery with one of our business partners in the mineral logistics field.
Flatbed, dry box container, pneumatic trailers, or specialized transportation can be arranged. Primarily serving the south Texas, Oklahoma, New Mexico and Louisiana area.


Offering clay products, building ponds, water treatment blended clay, private label, packaging, logistic services, trans loading services, wholesale distribution, competitive prices, inventory and warehousing, mix mesh blends, milling options, new cluster clay (no dust),  cat litter formulated as required for odor control, drop ship services, consulting services, laboratory test analysis, industrial water treatment equipment, manufacture equipment and equipment installation among other products and services offered by Lone Star GTC, LLC


We have a team of experts with more than 60 years of experience working and doing businesses every day on the full process of extracting minerals at the mines, milling and selling bentonite and barite minerals. Clients include various companies national and international that work in the different industries as drilling and fracking oil gas & water. Pet industry, steel foundry, water treatment, laundry, detergents and pond builders, pond liners, construction foundation, and concrete.