US CalciumTalk to our teamContact

One stone.Every size.

From rip rap and landscape stone to the −10 blend and fine milled powders, all from the same Idaho deposit.

  1. 6″ × 12″
  2. 3″ × 5″
  3. 3″ minus
  4. 1″ × 2.5″
  5. 1″ minus
  6. ¼″ × 1″
  7. −1O blend
  8. −2OO mesh
  9. −3OO mesh
Grades

Crushed & screened · DarlingtonCaCO₃ · 97–99.9%

Crushed stone, classified material and milled grades. The name is the starting point; the sieve analysis is the specification.

Crushed stone

Scale for the site.

  • 6″ × 12″Rip rapLarge stone for specified rock and erosion-control applications.
  • 3″ × 5″Sugar rockCrushed limestone from the original USCal product range.
  • 3″ minusRoad baseGraded material for the specified base application.
  • 1″ × 2.5″Raw material & landscapeLandscape and raw-material sizing from the USCal range.

Classified material

Separation with a purpose.

  • 1″ minusApplication-specific sizingReview the current sieve analysis with our team.
  • ¼″ × 1″Application-specific sizingClassified calcium carbonate; confirm your intended use and size requirements.
  • −1O × −4Granular materialRequest current particle-size distribution and grade specifications.

Milled & blended

Surface area, carefully controlled.

  • −1O blendFine powder + sand-sized granulesOur signature blend combines fine and granular fractions in one material.
  • −3OO meshFine milled gradeSelect fine material against the particle-size requirements of your process.
  • −2OO meshFine milled gradeCurrent sieve and chemical analysis are available for grade evaluation.

Confirm the current sieve analysis, calcium content, moisture and handling before ordering. Custom sizes and blends can be discussed with our team.

Close view of the −10 blend grade

Our −10 blend brings fine powder and sand-sized granules together for immediate reaction and continued release. Fine grades mill down to −200 and −300 mesh.

See what’s in the analysis

Let’s put itto work.

Share your application, specifications and volume. We’ll help you select a grade, evaluate a sample and plan your supply.

Loading screened limestone in the US Calcium yard

Contact

Call our team208-858-5250

Talk to our team

Tell us what you need. A person on our team will get back to you.

Prefer to talk? 208-858-5250

Required