👉 Ptychodium is a type of ionite that forms when sulfur or phosphorus are oxidized in the presence of water and oxygen. It is commonly found in the Earth's crust as a gray, crystalline rock.
👉 Ptychodium is a type of ionite that forms when sulfur or phosphorus are oxidized in the presence of water and oxygen. It is commonly found in the Earth's crust as a gray, crystalline rock.
