The Journal of Geology, Vol. 34, No. 7, Part 1 (Oct. - Nov., 1926), pp. 591-611 (21 pages) Both potash- and soda-feldspar end-members are believed to be trimorphous. The Millard-Michel Lévy theory of ...

The white, grey and black minerals that look like blades are plagioclase feldspars. On top of that, different things that can happen to minerals like reactions or growth defects or "twinning" will ...

Feldspar successfully completes the first functional prototype of its sensor-enabled, high-performance track, marking a historic leap in sports flooring technology. Early testing with some of the ...