'Due to its luster, German miners gave this "pleasant" rock its name, which means "spark"'
gneiss
GEOLOGY: Due to its luster, German miners gave this pleasant rock its name, which means spark
Due to its luster, German miners gave this "pleasant" rock its name, which means "spark"
Due to its luster, German miners gave this "pleasant" rock its name, which means "spark"
GEOLOGY
gneiss
GEOLOGY