Check the listing for details. Slate Sand - Medium/Coarse. Condition: New. Listed at 16.50 USD. Slate Sand - Medium/Coarse Size: 1/8" and smaller Color: Gray Buckingham slate is quarried in Buckingham County, Virginia, in the town of Arvonia. This natural stone has a distinct gray/blue/black color and glistens due to its mica content. Buckingham slate sand is the finest form of our signature slate chippings. The sand mimics real sand, working nicely as a surface dressing in finer-textured and natural look. The L-Series sand also works as a soil additive, helping to improve drainage and aeration in clay or compacted soils. Slate is a metamorphic rock that is primarily made up of quartz, illite, and chlorite, which can account for up to 95% of its composition. Other minerals that are often present in slate include hematite, magnetite, pyrite, and biotite. Product Details Use as an ingredient in specialty mortars and plasters Blend with a binder such as Lime Putty, Natural Cement, NHL or White Portland Cement Use with a clear and UV stable epoxy Made in America! Technical Data Sheet Caution: stone sand may irritate eyes and skin. Wear a mask when working & do not breathe the dust. Keep out of reach from children.