👉 Micropegmatite is a mineral that appears in various rocks and minerals, particularly in the Earth's crust. It is composed of small particles or grains smaller than 0.5 mm in size, typically about 1-2 micrometers (μm). Micropegmatites are often found in sedimentary rock layers and are used as a source of rare-earth elements for scientific research. Micropegmatite has a distinctive appearance due to its unique crystal structure, which is composed of a
