feldspars

the rock contained a significant amount of feldspars.

feldspars are the most abundant group of minerals in the earth's crust.

geologists use feldspars to determine rock origins.

potassium feldspar is a common constituent of granite.

plagioclase feldspars are found in many igneous rocks.

the analysis revealed the presence of albite feldspars.

feldspars weather easily, contributing to soil formation.

microscopic feldspars are often visible in thin sections.

the presence of sanidine feldspar indicated a rapid cooling rate.

identifying feldspars is crucial for petrographic studies.

feldspars exhibit a wide range of chemical compositions.