Nero Marquina marble
Black limestone from Spain From Wikipedia, the free encyclopedia
Nero Marquina marble (mármol Negro Marquina[1]) is a high quality, black bituminous limestone extracted from the region of Markina, Basque Country in northern Spain.[2] This variety of natural stone gets its black color from naturally-occurring bitumen.[3]

It is one of the most important "marbles" from Spain.[citation needed] It has a fine and compact grain with a black background and white veins, which can be abundant.
External links
- Nero Marquina. at natursteinonline.de (German)
References
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