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Alphabetical » READE Products » Minerals and Ores, Powder

Basalt Rock, Basalt Powder & Basalt Fiber / Strand from READE PDF Print E-mail

 Basalt, black granite, traprock, basalt powder, meta basalt, basalt fiber, basalt sand, basalt rock, basalt yarn,    Basalt, black granite, traprock, basalt powder, meta basalt, basalt fiber, basalt sand, basalt rock, basalt yarn,

  • Basalt Powder / Fiber Synonyms: 

Basalt, black granite, basalt chopped strand, wet, traprock, basalt powder, meta basalt, basalt fiber, basalt sand, basalt rock, basalt yarn,  

  • Basalt Powder / Fiber Designations:  

Chemical Name: Mafic

Chemical Formula: See below

  • Basalt Powder / Fiber Description:

    a) The basalts are extrusive naturally mined igneous rock. They are dense fine-grained rocks that are of very dark color- green or black and form when molten lava from deep in the earth's crust rises up and solidifies. Slightly coarser old sheets of basalt, now partially altered but still dark in color, are extensively quarried, crushed, and sold as "traprock".

    b) Basalt is a hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance. 

   c) Its main use is as a crushed rock used in construction, industrial and highway engineering. However it is not commonly known that basalt can be used in manufacturing and made into fine, superfine and ultra fine fibers. Comprised of single-ingredient raw material melt, basalt fibers are considered superior to other fibers in terms of thermal stability, heat and sound insulation properties, vibration resistance and durability.

   d) Basalt continuous fibers offer the prospect of a completely new range of composite materials and products.

   e) Basalt products have no toxic re-action with air or water, are non-combustible and explosion proof. When in contact with other chemicals they produce no chemical reactions that may damage health or the environment. Basalt replace almost all applications of asbestos and has three times its heat insulation properties. Basalt based composites can replace steel and all known reinforced plastics (1 kg of basalt reinforcement equals 9.6 kg of steel). The life of basalt fiber pipes, designed for a variety of applications, could be at least 50 years without maintenance or electrical or technical protection.

    f) Basalt fibers together with carbon or ceramic fibers as well as various metals is one of the most advanced and exciting area of application, as they can develop new hybrid composite materials and technologies.

   g) Basalt’s special properties can possibly reduce the cost of products whilst improving their performance. More than hundred specific unique manufacturing techniques using basalt fiber materials and products have been developed and patented in Russia.

  • Basalt Powder / Fiber Chemical Properties Available:

a) Plagioclase and pyroxene

b) The cut fibers are coated with a sizing treatment, which makes them highly compatible with epoxy and phenolic resins

c) Typical purity: 99.8%

  • Basalt Powder / Fiber Physical Properties Available:

a) Crushed pieces, sand and powder. (40 mesh x down and 150 mesh by down)

b) Cut fiber length= 2 mm

c) Cut fiber diameter= 9 microns

  • Basalt Powder / Fiber Nominal Characteristics:

• High tensile strength
• Alkali resistant
• High thermal conductivity
• No carcinogenic risk or other health hazards
• Completely inert with no environmental risks
• Resistant to acids and aggressive chemicals
• High E modulus resulting in excellent specific tenacity, three
  times that of steel fiber
• Good fatigue resistance
• Electro-magnetic resistant

  • Basalt Powder Nominal Physical Constants:

Density (

100 to 110

Tensile Strength (psi)

500k to 550k

Sintering Temperature(°C)


Operating Temperature(°C)

-265 to +700

Modulus of Elasticity (kg/mm3)




Mohs Hardness @20°C

 5 to 9

Melting Point (deg. C)


Heat Resistance (deg.C)


Elongation At Break (%)


Refractive Index


Elastic Modulus


  • Basalt Typical Applications:

Crushed stone, concrete aggregate, railroad ballast, production of high quality textile fibers, floor tiles, acid-resistant equipment for heavy industrial use, rockwool, basalt plastic pipers, basalt plastic reinforcement bars, basalt fiber roofing felt (ruberoid), basalt laminate used as a protective coating, heat-insulating basalt fiber materials, glass wool (fiber glass), etc.

• Basalt is the best reinforcement for concrete due to its tensile strength and natural     resistance to deterioration from alkali

• Reinforcement for composites, polyester/epoxy resins and plastics as used in automotive body panels, boat hulls and pultruded products, etc.

• Friction materials such as brake pads and linings

• Manufacture of basalt mat/felt

• High-temperature insulation applications

• Passive fire protection materials

• Filler for gypsum and sheetrock board requiring increased ‘burn-thru’ capability, to meet building regulations

• High-performance automotive muffler filler

  • Basalt Powder Packaging Options:

Jars, pails, drums, multiply paper bags, bulk bags and fiberboard containers

  • Basalt Powder TSCA (SARA Title III) Status:

For further information please call the E.P.A. at +1.202.554.1404

  • Basalt Powder CAS Number:





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