VC Matte with 7.5% Tin Oxide and 0.2% Chrome Oxide

Mary Jane Findley's tests:

V.C. Matte cone 6 Electric

40.0 Nepheline Syenite
8.0 Whiting
14.0 Silica
10.0 Kaolin
10.0 Gerstley Borate
8.0 Lithium Carbonate
________

10% Titanium Dioxide


Tin 7.5 %
Chrome Oxide 0.2%