We offer high-quality natural minerals, professional consulting, and years of experience to efficiently help our customers meet their demand for bentonite clay and its multiple applications.
Pond Liner
Fix ponds
Cat litter
Pond Construction
Drilling Mud
Wastewater Treatment

Fix your dried pond with Bentonite clay

The most effective, low cost and environmentally safe solution for leaking ponds and lakes.

dry pond with out bentonite for ponds
Without Bentonite
pond with gater treated 1
With Bentonite Pond Sealant

Please contact and request a quote for us to apply the bentonite clay and line your pond.

Products, Solutions and Services

Bentonite is an absorbent clay consisting mostly of Montmorillonite that works exceptionally well as a pond line

pond liner bentonite

Bentonite Pond Liner

Our Special developed formula will ensure water retention on any soil conditions. Sodium Bentonite can be used on any water deposits, is completely natural harmless, and safe for water life, livestock and swimming.

Truck sprinkling sodium bentonite

Fix Leaking Ponds and Lakes

We have  60 years of accumulated experience in the industry. We can assist you in repairing your pond’s water leaks using bentonite clay pond sealer. We provide the knowledge, workforce, resources, mineral materials, and equipment.

Bentonite Cat Litter

We are a valuable source for premium cat litter, odor-controlling, fast-clumping, dust-free, and easy-to-scoop cat litter bentonite that is also pet, earth, and people-friendly.

Pond Construction

Professional services to design your new pond, bentonite clay liner application, building, and construction services. Use our products and services to get everything right from the beginning.

filling pond

Wastewater Treatment

Our team of engineers develops custom formulations for the wastewater industry. Blends clay for water treatment plants. It will recommend the particle size for your particular process application. from powder, granular, or cluster dust-free form.

Drilling Mud Gel

We sell API-certified high-quality bentonite gel, HY High Yield 200 bbl sodium bentonite, and API Barite 4.10 + specific gravity in bulk or bags for the drilling mud industry. 

Professional Pond Repair Service

Save money, water and future headaches with our professional pond repair service

Sodium Bentonite is a great pond sealant, but the effectiveness of the seal depends on the quality of the mineral and the application.

Lonestar offers high quality bentonite and 60 years of experience applying bentonite pond sealant and repairing ponds.

Talk with our experts about your leaking pond and get a free estimate in the next 24 hrs.

About Lonestar Minerals

We offer a full product line of our mined quality bentonite minerals and professional services.


It all starts with mining, milling, packaging, and logistics to ensure our customers’ on-time deliveries.


Only the highest quality clays are selected, assuring a super product for constructing and treating a pond or lake.

Sodium Bentonite Plant

Core Values


In all our operations, we are dedicated to excellence in terms of quality, service and continuous improvement.


We care for our customers and employees; we aim to help them grow and be successful.


Our company follows the highest level of integrity. We operate by laws, legislation, and policies.

Benefits of our Minerals and Services

Bentonite and minerals at Wholesale price

Processing plant certified ISO-9001

High quality minerals help you to save money

60+ years of experience working with minerals

Nationwide delivery for Bentonite Clay and minerals

Turnkey Service

Our Clients are saying

“My business is simple. I design ponds. Lonestar has been my main supplier of bentonite for the past 7 years. They are honest, hard-working, and have never let me nor any of my clients down.


With pleasure, I sure do recommend them!”

Alex Hankins


“Lonestar Bentonite declares to have a high-performance product. The product seems to work as advertised. We’re very pleased with the results so far. Every day, it seems to be better. I highly recommend this product, as I tried other options on the market and didn’t work as well as this one.”

Pat Talamas




We ship nationwide, dispatching trucks for the southern states from our warehouses in Eagle Pass, Laredo, Bulverde, and the northern states directly from our Wyoming facilities. We can deliver to most Texans cities, like Dallas, Odessa, Amarillo, Galveston, Houston, among others, in one day. We also serve quick locations in Oklahoma, Nebraska, New Mexico, Utah, Colorado, Kansas, Idaho, Arkansas, Louisiana, Missouri, California, and Nevada.

From a 50 lb bag to full trucks, we can supply any amount of sodium bentonite your project requires.

Click on the button to get a Free Quote.

How much bentonite is needed to seal a pond?

Calculator - Home Page

Bentonite Calculator

Please, enter your pond measurements, deepest point, and soil condition to find out [approximately] how much bentonite you would need to fix your leaking pond.

Type of Soil of your Pond *
Pond Shape *

Helpful Tools & Recommendations For Bentonite applications

Where to buy bentonite clay for ponds?

The bentonite that is used for ponds is sodium bentonite, and you can buy it with Lonestar Minerales. We deliver nationwide at a great price per ton.
Request a Free Quote.

How much Sodium Bentonite is needed to seal my pond?

The amount depends on three main factors, the type of soil, the size of the pond, and the quality of the Bentonite.

Rock or gravel soils require around 3.5 ponds per square foot mind while clay soil only needs 1.5.

The quality of the bentonite is also important, the better the product, the less quantity is needed

Lonestar Minerals provides high-quality certified Bentonite as our plant is ISO-9001 certified.

To know the application rate and the amount of Lonestar  Bentonite pond liner do you need you can visit our Bentonite calculator.

Do you offer a pond repair service?

YES!, Besides offering our bentonite clay we also provide a complete service to repair your pond. We will supply the minerals, equipment, experience, and workforce.

We also, design and construct new ponds.

Request a Quote

How do I calculate the area of my pond?

Pond Size Area Calculating Formula:

Step 1.- Multiply your depth of deepest point by two, and the resulting number needs to be added to the length dimension of the pond.

Then repeat this process, multiply your depth of deepest point by two, and the resulting number needs to be added to the width dimension of the pond.

(Length + Depth x 2= “X”) and (Width + Depth x 2= “Y”)


Step 2.-Then, multiply the resulting number from both equations, from the above formula.

(L X W = Total Pond Area)

*This formula gives a reasonable approximation of the size of your pond.

To estimate the area of a Circular Pond:
Follow this process below!

Step 1.- You will need to measure the circumference of the pond. Once you have acquired those measurements, you will divide the circumference by two times pi. This resulting number is the radius of the pond.

Pond Circumference / (2 X Pi) = Pond Radius

Step 2.- Once you have solved for your radius. You will square the radius and multiply it by pi.

(Radius^2) X Pi = Pond Area

Feel free to contact us for any questions or concerns, our experts through our contact page, or give us a call. We can calculate the square footage of the pond you!

(To calculate your pond square footage size area, we need the longest pond length, longest pond width, and deepest pond depth).

Why use our Pond sealant mix mesh granular and powder particles sizes blend and not the granular or chips?

We offer a unique milled clay product for pond sealant that is a mix mesh powder granular product from fine 200 mesh powder to a 40-mesh mix.

This pond sealant mix meshes granular/powder is by far the best product for this application.

If you were to use a granular bigger particle size chips, you would need twice or three times as much to perform as good.

(Please see the picture of our product so you can have a better idea of our work) to give you an idea, if you hold our product in your hand, it will feel like you were holding beach sand.

Can you buy our bentonite pond liner by the full truckload, less than a truckload, by the pallet, bag, or by the ton?

We offer our products delivered at any of our warehouses. (Inventory always available)

The main warehouse is in Laredo, TX. and Wyoming, We also have a warehouse in Eagle Pass and Bulverde, TX. (11 miles North of San Antonio TX.)

We can coordinate logistics delivery nationwide at a very competitive rate.

We can ship directly from Wyoming mines depending on your location and the logistics cost.

We offer a delivery service, and we can coordinate delivery from LTL –  less than a full truckload order to an FTL full truckload order.

(Please call us for a landed price quote).

Our headquarters office is in San Antonio, TX.

Information on unloading your order from truck, equipment needed and pallets and super sacks weight?

Please consider that you’ll need equipment to unload 3,000 lbs super sacks or 2,500 lbs pallet from a flatbed truck.

These super sacks have straps on top to grab with your tractor, excavator, front loader, bobcat, or forklift. and you can unload from the eighteen-wheeler flatbed truck

Must of the time, the super sacks do not have wooden pallets underneath; if you require pallets, please call and request on your order (cost per pallet will be added to your order).

All our super sacks come with a very efficient discharge valve. The location of the discharge valve is underneath the super sack, for effortless pouring. To efficiently release the pond sealant, you must pick up the bag and untie the valve to start pouring the liner on top of your soil.

Sodium Bentonite vs Calcium Bentonite ?

Both are absorbents but, they absorb different things, therefore, they have different applications.
Sodium Bentonite absorbs water mine while Calcium Bentonite absorbs fat.
For more information about their properties and applications just follow the link.

What is Bentonite and its History?

Bentonite is volcanic ash from million or thousand of years old. It mainly consists of mineral montmorillonite and lesser amounts of other minerals such as pyrite, feldspar, quartz, and calcite.


An American geologist identified swelling water clay in and around rocky formation near Fort Benton and given the name “mineral soap.”


During the 1920s, when researchers called bentonite clay and the important Properties of montmorillonite Bentonite.


Mineral with a density between 2.2 and 2.8 g/cm3 depending upon its quality and the presence of other minerals. When wet, the volume expands almost 13 times more than when it is dry and 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 water body, like ponds, dams, wells, and lagoons.

bentonite mine


For those who want a good pond seal to solve and repair the base of their water retention stock tanks, natural sodium bentonite clay is the best alternative. Clay prevents water from escaping or flowing, while at the same time, it is harmless to fish, cattle, livestock, and plants.


  • Ranch Owners
  • Farmers
  • Homeowners
  • Businesses
  • Golf courses
  • Residential Communities
  • Municipalities
  • State governments
  • Etc.
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