Microcline is one member of the feldspar which is the the most important rock forming mineral in earth surface rocks. This is the Microcline and Quartz combo specimen, from Fujian, China, milky yellow color, greasy luster, sharp geometric shape, looks like popsicle! Assocaited with smoky Quartz, outstanding on the matrix, smoky Quartz are almost transparent. Very interesting specie and crystal shape!