Industrial Minerals, Ore & Mining Testing - Clark Testing

Minerals, Ore and Mining Testing

Minerals have four classifications based on their economic use:

Energy minerals

Energy Minerals are those which are mined to produce electricity and fuel. Energy minerals include coal, oil, and natural gas.


Metals are mined for an abundance of uses; commonly: Iron for steel production for vehicles and building materials, Copper for electrical, and aluminum for packaging and aircraft.

Construction minerals

Construction minerals include sand and gravel, brick clay and crushed rock aggregates. They are used in the manufacture of concrete, asphalt, bricks, etc.

Industrial minerals

Industrial minerals are non–metallic minerals used applications including the manufacture of chemicals, glass, fertilizers, pharmaceuticals, plastics and paper.

Clark Testing has a long history of providing testing services to producers, distributors, and end users of various Minerals. Clark provides on-site sampling services at mine sites or barge and rail terminals.
We perform the preparations necessary for testing which may include machining of the materials, notably crushing. Clark’s Analytical Chemistry lab and Particle Characterizing lab offer both the chemical composition and physical property testing. Following ISO/IEC 17025 quality guidelines, we give the reassurance that mineral products meet our customer’s criteria for their application and industry specifications.

Testing services most commonly include:

  • Crystalline Phase Identification
  • Elemental composition
  • Particle Sizing
  • Density
  • Porosimetry
  • Surface Area

Building Materials

  • Slate
  • Dolomite
  • Granite
  • Gypsum
  • Marble
  • Pumice
  • Limestone
  • Cement (Portland)


  • Bentonite
  • Talc
  • Kaoline
  • Ball Clays
  • Vericulite
  • Pumice

Refractory Materials

  • Corundum
  • Adalusite
  • Potash
  • Sillimanite
  • Kyanite


  • Silica Sand
  • Feldspar
  • Diatomite
  • Tripoli
  • Mica
  • Coal Ash
  • Quartz
  • Perlite
  • Coke Ash
  • Olivine
  • Fly Ash


  • Aluminum Ore / Bauxite
  • Iron Ore
  • Sinters
  • Base Metal Ore

Slag and Flux

  • Fluorspar
  • Basic Slag
  • Wollastonite
  • BOP Slag
  • EAF Slag
  • Slag Conditioners


  • Baryte
  • Alunite
  • Mirabilite


  • Sand
  • Ceramics



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Clark Testing has been providing product qualification testing and design verification for manufactures for over 20 years. We provide our clients with independent testing.

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Testing Services Offered

Analytical Chemistry