What is another word for Prehnite?
Pronunciation: [pɹɪhnˈa͡ɪt] (IPA) 
Prehnite is a mineral that belongs to the phyllosilicate group. It is often referred to as a "secondary" or "alteration" mineral, as it is formed by contact metamorphism and hydrothermal alteration of other minerals. Some synonyms for prehnite include prenite, prehnitite, green apophyllite, and kidney stone. These synonyms are commonly used to describe the greenish-yellow or yellow-green color of prehnite, which is caused by the presence of iron and copper. Prehnite is often found in basaltic rocks, volcanic rocks, and hydrothermal veins. It is commonly used in jewelry, as it is a relatively hard and durable mineral that can be cut and polished into beautiful gemstones.
