1. A hydrated silicate mineral that typically forms colorless or white crystals and is valued by collectors and in crystal healing practices.
Usage: mineralogy; geology

Examples

• The geologist identified the specimen as apophyllite based on its crystal structure and optical properties.
• Apophyllite crystals are often found in basaltic rocks and are prized by mineral collectors.
• The museum's mineral exhibit featured a striking display of apophyllite alongside other zeolite minerals.
• Apophyllite is known for its pearlescent luster and perfect basal cleavage.
• Some people believe apophyllite has calming properties, though this is not scientifically proven.