👉 Brushite, also known as beryllium nitride, is a mineral that has a grayish-brown color and a hardness of about 7.5-8 on the Mohs scale of mineral hardness. It is often used in the production of abrasives, such as sandpaper, and in the manufacturing of refractory materials for ceramic tiles, bricks, and ceramics. Brushite is composed of beryllium (Be) atoms bonded together by nitrogen (N). The structure
