a rock is found to be composed almost entirely of quartz, but with a small amount of a flaky mineral that breaks into thin sheets when you scratch it. what is the mineral composition of this rock?

The stone has been found to be composed almost entirely of quartz but contains small amounts of flaky minerals that separate into thin layers when scratched. The mineral composition of this rock consists of quartz and pyroxene.Quartz-based sandstone is an important component. Large amounts of quartz sand are used in the manufacture of glass and ceramics, and in molds for metal casting.Quartz is a major component of many types of rocks. Quartz is abundant in certain igneous rocks. It forms clear to gray to even white massive masses in granite and is composed mostly of siliceous or felsic igneous rocks. It is absent or rare in more primitive basic or siliceous igneous rocks such as basalt.To learn more about quartzhttps://brainly.com/question/12822959#SPJ4