Often called green feldspar, some of Broken Hill's plumbian orthoclase samples get misidentified as amazonite. Amazonite is a microcline rather than orthoclase feldspar, a similar mineral with a ...

Magmas rich in felsic components such as quartz and orthoclase feldspar are higher in silica than those rich in igneous rocks. Magmas with a high silica content are viscous. can be thought of as the ...

Often called green feldspar and dubbed by scientists “the Aussie kryptonite,” some of Broken Hill’s plumbian orthoclase samples get misidentified as amazonite.