👉 Carpholite is a mineral that is often associated with the appearance of black, gray or brown crystals. It can be found in various geological formations and is typically formed by the transformation of other minerals like quartz, feldspar, and calcite. Carpholite can also occur in volcanic rocks and metamorphic rocks. Carpholite has a high porosity and is often used for its unique appearance as it exhibits a distinctive black, gray or brown coloration when exposed to light
