Product Category: VANSIL® Wollastonite
VANSIL® Wollastonite is unique among soil amendments as a source of silicon and carbon-neutral calcium. It is the only OMRI certified wollastonite mined and milled in the United States.
VANSIL® W-20
Wollastonite

Wollastonite, a natural calcium silicate mineral, is unique among soil amendments as a source of silicon and carbon-neutral calcium.  It is the only OMRI certified wollastonite mined and milled in the United States.