Limestone Products:

  • Ag-limestone: calcium carbonate (CaCO3)
  • Ag-dolomite: calcium carbonate with magnesium carbonate (CaCO3MgCO3)
  • Crushed dolomite with fines: works great around livestock watering tanks and under hay stacks, and can be distributed in your fields after use.
  • Current Assays are available, please contact the office for data.


  • White Stone Calcium, Inc.

    Physical address:
    2432 Highway 395 South
    Chewelah WA 99109

    Mailing address:
    PO Box 21
    Chewelah, WA 99109

  • Hours

    Monday through Friday

    Office Hours     7:30am – 3:30pm (PST)

    Loading Hours  7:30am – 1:30pm