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Gilsonite Natural asphalt

Gilsonite or natural bitumen is a hydrocarbon for the mineral known as natural asphalt,bitumen powder, drilling mud or uintahite.This unique mineral is used in more than 160 products, primarily in dark-colored printing inks and paints, oil well drilling muds and cements, asphalt modifiers, foundry sands additives and a wide variety of chemical products.

Gilsonite or natural asphalt is compatible with microcrystalline and paraffin wax, petroleum resin and oil, rosins, tall oil pitch, vegetable oil (linseed, soya, etc), petroleum process oils and  petroleum asphalt.

As the world’s major supplier of Gilsonite or natural asphalt products, we market many different grades of Gilsonite and Gilsonite resins, each with properties tied to a specific end-use. We have extensive experience in shipping direct from Mine Site and through Vessel, truck and train  also small quantity by airplane in over 50 countries around the world.

From our plants we provide customers with a dependable supply of made-to-spec products in a variety of packaging options, including our refined Gilsonite or natural asphalt through a proprietary solvent extraction process. Our products are carefully screened for mesh, dried to controlled moisture specifications from around 1.5%, classified by particle size, held in large concrete silos until ready for final packaging, and stored in a covered warehouse prior to shipment. Our labs conduct extensive quality controls throughout the production process and every order is shipped with an individual certificate of analysis that guarantees its adherence to specifications.

For orders or additional information, please contact us directly or send us an electronic information request form. We look forward to meeting your business needs.

Gilsonite (natural asphalt) Major uses:

Drilling Gilsonite specification

Gilsonite is used to control API and HTHP fluid loss in the oil base drilling fluid. when mixed with organophilic clays, it is particular grind size and softening point are ideal for reducing whole mud losses to the formation .Gilsonite pulverized is only partially soluble in aromatic hydrocarbons.

Gilsonite Pulverized is relatively stable and of low hazard. however, it should not be stored or used near strong oxidizing  agents  such as chlorates, nitrates or peroxides. Excessive dust is subject to combustion or explosion upon contact with spark or open flame and should be minimized. use good industrial hygiene practice to avoid eye and excess skin contract. Wear a protective dust mask and goggles when handling and mixing.


Gilsonite is available in 22.68kg(50LBS)25Kg-50Kg-100Kg-1000Kg muli-wall paper sacks or jumbo bag.

Recommended treatment

Gilsonite should be added a rate of 10-30Kg/m3

Roofing Gilsonite

Gilsonite is used in roofing materials primarily as an agent to lower the penetration of petroleum asphalt without aging or oxidizing the base asphalt. Lowering the penetration of the base asphalt in this way allows the base asphalt to maintain some of its flexibility while at the same time maximizing the asphalt’s ability to withstand high temperatures without softening. Gilsonite is also used as a modifier to reach roofing specifications when air-blowing facilities are not available.

Gilsonite is also used by a number of manufacturers producing patching materials for roofing. Gilsonite is used to modify the patching materials and is distributed in containers to retail customers. Using Gilsonite as a modifier allows the product to remain pliable until applied, after which it permanently attaches to the treated surface.

Inking and painting Gilsonite

The paint applications, Gilsonite is usually used in combination with bitumen (asphalt). In most cases, if Gilsonite is used alone, the final paint will be  very hard and brittle after drying. If normal straight-run bitumen is used alone, the finished paint is too soft and tacky . Therefore, a combination of Gilsonite and bitumen is used to achieve the desired hardness (penetration) and drying time of the finished paint. In addition to imparting hardness to the paint, Gilsonite is also increasing the paint’s: (1) adhesion; (2) gloss; (3) chemical resistance; (4) water resistance; and (5) body.
For hardness, Gilsonite has a zero (0) penetration (at 25°C; 100 gm, 5 sec.) compared to the 60-70 pen, 80-100 pen or softer bitumens commonly available from petroleum companies or asphalt manufacturers. Approximately 90% of all bitumen is used for road construction and these hardness grades are acceptable for that purpose. However, they are too soft by themselves for the manufacture of paint and surface coatings which require hardness values around 5 penetration for acceptable paint drying. Paint films composed of bitumen alone are tacky if the penetration is more than 10, and are brittle if less than 4.

Asphalt and paving Gilsonite

Gilsonite is used as a performance-enhancing agent for asphalt mixes. Gilsonite-modified paving mixes achieve higher PG grades and incorporate perfectly into the asphalt blend with no need for high shear milling as is the case with many other modifiers. Gilsonite can partially or totally replace, or complement, the use of SBS polymers in modified asphalts at a fraction of the cost. Gilsonite-modified asphalts have higher stability, reduced deformation, reduced temperature susceptibility and increased resistance to water stripping than non-modified asphalts. Gilsonite is also used to make both solvent-based and emulsion pavement sealers with superior appearance and weathering properties.

How to mix Gilsonite with bitumen?

Gilsonite application:

History of uses :  The first known use of Gilsonite turned out badly – a blacksmith mistook the material for coal, and used it to fire up his forge.  His shop almost burned down when hot liquid asphalt began leaking out of his furnace.  Samuel Gilson began exploration of the region in 1886 and opened the first Gilsonite mine in 1888.  He was a tireless promoter of Gilsonite as a wonder product, and it has a myriad of uses: A) it is distilled and heat-refined to produce high-octane automotive gasoline, diesel fuels, LPG, raw naphtha, lubricating oils, road oils, and asphalt paving products; B) Saturates roofing and building construction papers (tar paper); C) Base for paints, varnishes, anticorrosive coatings; D) Component of battery boxes; E) Insulating and waterproofing jackets for underground pipes; F) Stabilizer in non-smearing inks; G) Additive for oil-well slurries; H) Binder for wood fibers; I) High-BTU component of explosives; J) Can be heated and calcined to produce metallurgical grade carbon coke, and high-purity carbon electrodes for the nuclear power industry.

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