Wollastonite has been mined in New York state since the 1940s. The two companies currently mining the mineral in the state are NYCO Minerals and R.T. Vanderbilt.
The NYCO deposit in Essex Cty. contains about 60% wollastonite, 30% garnet and 10% diopside. The Vanderbilt deposit in Lewis Cty. contains only minor amounts of calcite and diopside.
The major uses of wollastonite are in ceramics, plastics and paint. It is also used as an asbestos substitute.
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