G-200 Feldspar
Notes. G-200 Feldspar was a high quality potassium / sodium / calcium aluminum silicate ground to 200 mesh for ceramic applications. Carefully beneficiated and controlled for quality, G-200 offered high potash content and low iron oxide per unit of alumina. It was mined in Monticello, GA. September 2013: The trials at the Feldspar Corporation failed.
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