👉 Eucryptite is a mineral that typically occurs in the rocks of the Earth's crust. It is composed of two minerals, orthopyroxene and plagioclase, which are both common in this type of rock. Eucryptite can be found in various forms such as feldspar crystals, quartz, or calcite, depending on its mineral composition. It is a very hard mineral with a hardness that ranges from 7 to 8 on the Mohs scale and can
