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    • What is Sodium Bentonite?

      Bentonite is primarily composed of clay mineral montmorillonite, a magnesium-aluminum silicate. Bentonite hydrates in fresh water and disperses to varying degrees, depending on the nature of the cations that are loosely held and exchangeable (High cation exchange capacity) The presence of exchangeable sodium ions enhances hydration and dispersion. Divalent cations such as calcium reduce the degree to which the individual platelets disperse, Bentonite is added to freshwater mud for use in one or more of the following purposes:

      1. Increase the borehole cleaning capability.
      2. Reduce filtration into the permeable formations.
      3. Form a thin low permeability filter cake.
      4. Promote borehole stability in poorly consolidated formations.
      5. Control loss of circulation.

      Bentonite has a specific gravity of 2.5 and a Mohs hardness of 1 to 1.5. It ranks second in quality only to barite as a drilling – fluid additive.

      Bentonite, Is mined primarily in South Dakota and Wyoming, Arizona, California, Colorado, Mississipi, Nevada, and Oregon. Major deposits outside the United States are in Argentina, Brazil, Cyprus, Germany, Greece, India, Italy, Mexico, and Turkey.


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  • API Bentonite “Gel”

    Our Bentonite clay 200 mesh complies with API 13ª Section 9, specifications for drilling fluid materials. This type of Bentonite is mainly used for oil and gas drilling, deep water wells and in other applications where these special characteristics are required.

    Lone Star GTC, LLC is a Texas company based in San Antonio, TX with operations in Laredo and Eagle Pass, TX. Doing business in collaboration with a team of experts with over 50 years of experience in the process of extracting minerals, mining, and milling that allow us to guarantee the raw and milled material with API spec for our customer’s needs.

    Bentonite is a mineral that can be used in many industries given its unique chemical and physical properties. Lone Star GTC primarily supplies a product that is used as viscosity for drilling muds in the oil, gas, water and foundation industries.

    Some of our clients use our product for soap, detergent, animal feed, cosmetic, pharmaceutical, sealant, paint, ink, and as a clarifier of wine and juice




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  • Standard Bentonite “Gel”

    Our standard sodium bentonite is a 200 mesh product used in the elaboration of drilling fluids for water wells, foundations, general construction, trenches and other civil engineering applications.

    This product is just under API 13a section 9 specifications

  • Sodium Bentonite

    Sodium bentonite for water leaks and pond sealer.

    Texas ranchers can use our sodium bentonite to mix and blend with soil to prevent water leaks and seal pond.

    Many other applications of our products include water cleaning treatment, emulsifier and use on the iron and steel foundry.

    This construction bentonite is a 200 mesh product used in the deep excavations and applications where cement is used, aqueducts, foundations, tunnels, dams, and general civil engineering projects.

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    Cat litter Hour cat litter has a tight clumping ability that produces a solid clump that is easily scooped away. Rapid Clumping:: since cats cover and scratch, our rapid clumping formula ensures lest dust and tracks around the house. Odor Control: Our cat litter is made of 100% bentonite wich is a natural absorbent and we also offer various choices of natural scents for maximum odor control. Environmental friendly and Dust free: bentonite which is an inert compound eliminating all fine particles that avoid cleaning or breathing dust.

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  • What is Barite?

    Barite is a mineral composed of barium sulfate (BaSO4). It receives its name from the Greek word “barys” which means “heavy.” This name is in response to barite’s high specific gravity of 4.5, which is exceptional for a nonmetallic mineral. The high specific gravity of barite makes it suitable for a wide range of industrial, medical and manufacturing uses. Barite also serves as the principal ore of barium.

    Our barite is a natural barium sulfate designed to meet all the properties of drilling grade barite. Meets or exceeds all API requirements.


    Drilling grade Barite (BsSO4) 4.1 ~ 4.2 Specific Gravity is used to increase the weight of fluids. Barite or baryte is a mineral consisting of Barium Sulfate.

    Some 77% worldwide is used as a weighting agent for drilling fluids in oil and gas exploration to suppress high formation pressures and prevent blowouts. As a well is drilled, the bit passes through various formations, each with different characteristics. The deeper the hole, the more barite is needed as a percentage of the total mud mix. An additional benefit of barite is that it is non-magnetic and thus does not interfere with magnetic measurements taken in the borehole, either during logging-while-drilling or in separate drill hole logging.

    Barite used for drilling petroleum wells can be black, blue, brown or gray depending on the ore body. The barite is finely ground so that at least 97% of the material, by weight, can pass through a 200-mesh (75-μm) screen, and no more than 30%, by weight, can be less than 6 μm diameter. The ground barite also must be dense enough so that its specific gravity is 4.1 or greater, soft enough to not damage the bearings of a tricone drill bit, chemically inert, and containing no more than 250 milligrams per kilogram of soluble alkaline salts.






  • PackagingOur barite is available in super sacks of one and a half metric ton or in bulk pneumatic tank. 100 lb and 50 lb. paper bags can be custom ordered.