Nero Marquina marble (mármol negro Marquina) is a high quality, black bituminous limestone extracted from the region of Markina, Basque Country in the North of Spain. This variety of marble gets its black color from naturally-occurring

bitumen Asphalt, also known as bitumen (, ), is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term a ...

.{{cite web , url=https://www.riadtile.com/nero-marquina-marble-tile/ , title=Nero Marquina Marble Tile , website=Riad Tile , publisher= Riad Tile , access-date=November 19, 2021 It is one of the most important marbles from Spain. It has a fine and compact grain with a black background and white veins, which can be abundant. It has gained recognition worldwide due to its beautiful black color. Similar black marbles are now also produced in China and Iran.

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Marble Basque Country (autonomous community) Mining in Spain