American Tripoli and Sandstone

What is tripoli?

Tripoli is a highly porous, lightweight material. Due to its porous structure is so soft that it can easily cut with a finger nail and crumbled to a fine powder between the fingertips.

While it may easily be crumbled to a powder, the ultimate individual grains (usually 0.01 millimeter or more refined) are so strong they will scratch steel.

Tripoli, when dry, is exceptionally absorbent. For example, a 4-inch square will absorb one-third of its water weight (complete saturation) in less than 5 minutes. This moisture will dry at ordinary room temperature and humidity in approximately three days.

Tripoli's color is usually pure white, but certain portions can be stained by iron oxide to cream, yellow, brown, and rose-colored.

Limited to a small area in the foothills of the Ozark Mountains in the southwest corner of Missouri and the northeast corner of Oklahoma, within a radius of fifteen miles of Seneca, Missouri, U.S.A., formerly the home of the Seneca Indians, nature has furnished the world one of its most unique non-metallic minerals. No other place on earth on any continent has this material called "Seneca Standard" Tripoli been discovered.

Many non-metallic minerals with chemical analyses similar to "Seneca Standard" Tripoli have been termed "Tripoli," although entirely different in physical particle structure.
Seneca Standard Tripoli
Labels & Product Recommendation Chart

Once Ground Cream

White Label

Once Ground Rose

Red Label

Double Ground Cream


Double Ground Rose

Green Label

Air Float Rose

Black Label

Premium Cream

Gray Label

R - 45

Lime Label

C - 45

SunBurst Label

R - 30


C - 30

Salmon Label

R - 15

Teal Label

C - 15

Fushia Label

R - 10

Maroon Label

C - 10

Purple Label


Sandy Beach Label
Recommendation Chart
These are just a few recommendations of the almost unlimited uses of our product. Below this recommendation chart is a list of industry sectors where you can find our Tripoli products being used:


Application Requirement


Loading Level (%)

High Cut (aggressive)
Metal Finishing
Chrome, aluminum & light stainless, post, pans, bumpers, & wheels
Medium Cut (slight color)
Metal Finishing
Chrome, aluminum & light stainless, post, pans, bumpers, & wheels
Low Cut (higher color)
Metal Finishing
Fine polish, usually used after Once Ground or Double Ground
For polishing of minerals & rocks
Light Cut (high color)
Metal & Metal Substitute Finishing
Polish & finish, light soft metals, paints, plastics
Very Light Cut (very high color)
Metal & Metal Substitute Finishing
Polish & finish, light soft metals, paints, plastics
Extremely Light Cut (mirror color)
Metal Finishing
Very soft metals, aluminum, stainless, chrome, brass, paints, such as picture frames, small ornament pieces, display metals, coins, etc.
Least Cut (finest mirror color)
Used in polyolefin purging compounds. Also, used as a less abrasive, higher impact & flexural strength producing silica material in molded epoxy compounds
Friction Agent
Scouring Agent
Used in blocks, pads & shoes
Loading levels shown are those more frequently encountered
Tripoli possesses a natural characteristic of friability, regardless of the size of the particle. The particles will break down, or crumble into smaller particles as it is being applied. Larger Tripoli particles will cut a surface when first applied, and as the particles break down into smaller sizes, they begin to polish, or color the finished item.

It should be remembered that the larger the Tripoli particle size, the more aggressive cut and little polish, or color will be the finished result. The smaller the Tripoli particle size, the less cut and more polish, or color will result.

It should also be remembered that Cream Tripoli is a softer material than Rose Tripoli. Rose Tripoli will always have more cut and less polish ability than Cream Tripoli. Both will produce the same result, but Cream would always be less aggressive.

The item to be buffed or polished will dictate the Tripoli product to be applied. The more aggressive Once Ground Tripoli product will cut heavy metal items such as aluminum bumpers or wheels, where Tripoli R-15 would not even touch the surface. The Tripoli R-15 will provide a mirror finish for a thin brass picture frame with absolutely no cut to the surface.

The above Tripoli characteristics should always be considered before determining which product would provide the desired properties.
Tripoli Synonyms
Crystalline silica- tripoli, seneca cream premium, seneca cream 45, seneca cream 30, seneca cream 15, tripoli, seneca rose 15, seneca rose 30, seneca rose premium tripoli powder, seneca standard tripoli powder, once ground, double ground, air float, trifil, tripoli powder, american tripoli powder, tripoli powder, cas 1317-95-9, Agate, Chalcedony, Chert, Clathrasil, Coesite, a b Cristobalite, CSQZ, DQ 12, Flint, Jasper, Keatite, Min-U-Sil, Moganite, Novaculite, Porosil, a-Quartz, a b Quartz, Quartzite, Sandstone, Sil-Co-Sil, Silica sand, Silica W, Snowit, Stishovite, Sykron F300, Sykron F600, a b1 b2 Tridymite, Zeosil, Aerosil, Art Sorb, Baykisol, Bindzil, Biogenic silica, Britesorb, Cab-O-Sil, Celatom, Celite, Clarcel, Colloidal silica, Decalite, Diamantgel, Diatomaceous earth (flux-calcined), Diatomaceous earth (uncalcined), Diatomite, Fina/Optima, FK, Fused silica, Gasil, HDK, Hi-Sil, Hispacil, KC-Trockenperlen, Ketjensil, Kieselguhr, Lucilite, Ludox, Nalcoag, Neosyl, Nipsil, Nyacol, Opal, Precipitated silica, Quartz glass, Reolosil, Seahostar, Sident, Silcron, Silica fibres (biogenic), Silica-Perlen, Silica-Pulver, Sipernat, Skamol, Snowtex, Spherosil, Suprasil, Sylobloc, Syloid, Sylopute, Syton, TAFQ, Tixosil, Tripolite, Trisyl, Ultrasil, silica dioxide, silica, silica gel, diatomaceous earth, kieselsol, colloidal silica, E551, rottenstone
American Tripoli Abrasive Powder, (SiO2) U.S. EPA TSCA (SARA Title III) Status: Listed.

American Tripoli Abrasive Powder, (SiO2) Chemical Abstract Service Number: CAS# 1317-95-9.

For further information please call the U.S. Environmental Protection Agency at +1.202.554.1404
Our Tripoli products can be found in various industry product sectors and this list is continuously growing…
Aquaculture -minerals and filtration
Agriculture – Optimization of plant nutrition using non-traditional    organic fertilizers
Apothecary - Medicine chemists, blood clotting activator
Dental Laboratory Technicians
Hydrothermal technologies - production of porous ceramics under low    temperatures
Jewelers - Brass, Diamond, Gold, Glass, Stone, Glass polishing
Medical - blood clotting activators
Metal Workers
Model Makers
Oil and Gas - Fracking, drill mud
     ● 3D Printing
     ● Abrasives - Polishers, Buffing, and burnishing compounds,         toothpaste, facial scrubs
     ● Aggregates – high-quality lightweight construction and road         surfacing material, cat litter
     ● Agriculture – Soil mineral additive, grain storage natural insecticide,         anti-caking agent, a indigestible marker, Automobile
     ● Automobile
     ● Cement - The binding agent used in concrete pavements and         foundations, enhances strength and washability.
     ● Ceramic - red brick manufacturing, porous ceramics
     ● Chemical - porous support for catalysts, silica-enzyme-ionic liquid         composite, biological compounds, Sol-gel, bio-/photocatalysis,         bioremediation processes, electrochemistry, Hydrophobic, and         superhydrophobic coatings
     ● Detergents - Scouring soaps and powders
     ● Electronics
     ● Industrial - Abrasive, Ceramics, Fertilizers, Filler, Fluxes, Foundry         minerals, Insulators, Pigments, and Refractories
     ● Feed - mineral additive, grain storage natural insecticide,anti-caking         agent, a indigestible marker
     ● Filters - Filtration for Aqua, syrups, sugar, honey, beer, wine, almost         any liquid
     ● Dynamite / Fireworks - stabilizing component
     ● Glass - Polishing
     ● Hydroponics - Filtration, growing medium
     ● Oil and Gas - Catalyst agent carrier
     ● Paint - Pigments, Coatings
     ● Pesticides - mechanical insecticide
     ● Plastics - Reinforcing Filler or extender, anti-blocking for plastic         films
     ● Rubber - Reinforcing Filler or extender
     ● Sealants - Reinforcing Filler or extender
     ● Solar - Thermal heat barrier
     ● Salt-water-pool-delivered - high (>60%) crystalline content
     ● Veterinarian - Deworming agent in animals