Plagioclase feldspars contain significant, variable percentages of which elements?
A)calcium and magnesium
B)sodium and calcium
C)sodium and sulphur
D)iron and magnesium

Question

Quizplus · Accepted Answer

Plagioclase feldspars are a series of solid solution minerals that contain both sodium and calcium. The percentages of these elements can vary from one end-member (pure sodium) to the other (pure calcium).

Plagioclase Feldspars Contain Significant, Variable Percentages of Which Elements