Etymology. The name feldspar derives from the German Feldspat, a compound of the words Feld, "field", and Spat, "a rock that does not contain ore". The change from Spat to -spar was influenced by the English word spar, meaning a non-opaque mineral with good cleavage. Alibaba.com offers 1,196 feldspar in ceramics products. About 19% of these are other non-metallic minerals & products, 16% are ceramics, and 14% are other non-metallic…