Adhesives & sealants
Used as a filler and rheology aid in adhesives, caulks, and sealants — loading, body, and whiteness in the finished compound.
Industrial mineral · CaCO₃
Calcium carbonate for manufacturing
Ground calcium carbonate supplied to plants that need a reliable mineral filler — not landscaping stone. Tell us the industry, the volume, and where it ships. We quote from there.
What it is
A natural mineral used as an industrial raw material
Calcium carbonate (CaCO₃) is ground from high-purity marble and limestone. Manufacturers use it as a functional filler and extender: it adds body, brightness, and process control without changing the job the finished product has to do.
Masstone Supply is a U.S. supplier connected to Calci Mexicana. We sell into adhesives, plastics, paints and coatings, agriculture, and industrial construction. Particle size and packaging are quoted to the application — we do not stock every mesh on the market.
If you searched for marble sand, filler sand, or marble dust, you are looking at the same mineral under the name your industry uses.
Where it is used
Industries we supply
These are the markets this product is built for. If your plant is in a related process, send the spec and we will tell you whether we can match it.
Plastics, resins & polymers
Functional filler in plastics and resin systems. Improves stiffness, surface, and cost-in-use versus neat polymer.
Paints & coatings
Extender for brightness and opacity in paints and coatings. Often used to manage titanium dioxide loading.
Agriculture & nutrition
Soil amendment and pH control, plus mineral supply into agricultural and nutrition applications that specify calcium carbonate.
Industrial construction
Mineral input for industrial building materials and large-scale construction — hangars, plants, and other non-residential work.
Other industrial fillers
Paper, rubber, and specialty compounds that specify ground calcium carbonate. Share the grade. We confirm fit before quoting.
Marble sand, filler sand, and marble dust are the same mineral
Those names describe particle size and the market that buys it — not three different rocks. Calcium carbonate is the product. If your PO says marble dust or filler sand, we still start from CaCO₃ and match the grind you need.
How it ships
Packaging & quantities
Orders are quote-based. No online checkout. We currently supply Texas, Tennessee, Arkansas, and Colorado, and review freight requests from other U.S. destinations.
Bags
Including 50 lb and 96 lb paper bags
Super sacks
Bulk bags for plant receiving
Pallets
Unitized loads for wholesale and production
Bulk tons
Truckload and larger industrial volumes
Buying
Frequently asked questions
Is this the same as the decorative stone on the rest of the site?
No. Decorative marble and beach pebbles are a separate line. This page is the industrial mineral: calcium carbonate sold into manufacturing and related processes.
What mesh sizes do you carry?
Particle size is quoted to the job. We do not list every competitor grade. Send the mesh or spec sheet you run today and we will tell you what we can supply.
Can I get a sample before a bulk order?
Yes. Trade and industrial buyers can request a sample to check grind and color before committing to bags, super sacks, or truckload.
Do you ship nationwide?
We regularly serve Texas, Tennessee, Arkansas, and Colorado. Full truckload, LTL, and job-site freight elsewhere in the U.S. is reviewed on the quote.
Who should request the quote?
Purchasing, plant, or a distributor buying for production. Include industry, volume, destination, and any mesh requirement so the first reply is usable.
Next step
Need calcium carbonate for a plant or project?
Send the product, quantity, and delivery city. Masstone Supply will follow up with availability, packaging, and pricing.