What is black Cebu rock a mineral?

Black Cebu rock, also known as Cebu black stone or black marble, is a type of igneous rock primarily composed of basalt. Found in the Philippines, particularly in Cebu, it is characterized by its striking dark color and fine-grained texture. This rock is often used in construction and decorative applications due to its durability and aesthetic appeal. It is prized for its unique appearance and is popular in various architectural and design projects.