Where is Black Marble found?
Marble (metamorphosed limestone)
Got a photo? Identify rocks instantly with the Rockby app
Open the appBlack Marble occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Black Marble
Marquina, Basque Country, Spain
Source of the famous 'Nero Marquina' black marble, known for its fine grain and striking white veining.
Portovenere, Liguria, Italy
Origin of 'Portoro' marble, characterized by its deep black color with prominent golden and white veins.
Kilkenny, Ireland
Known for 'Kilkenny Black Marble', a dark limestone that is often commercially referred to as marble due to its ability to take a high polish, though technically it is a very dense, dark limestone.
Vermont, USA
Various marble quarries, some producing dark varieties, particularly in the Appalachian Orogeny belt.
China
Numerous quarries produce various types of black marble, often with distinct veining patterns.
Collecting tips
- Geological Maps. Consult regional geological maps to identify areas known for carbonate rock formations (limestone, dolostone) that have undergone metamorphism. Look for areas marked as marble or metamorphic belts.
- Outcrop Examination. In the field, look for exposures of dark-colored, granular rocks that react vigorously with dilute hydrochloric acid (indicating calcite) or slowly (indicating dolomite). The sugary texture is a key indicator.
- Associated Minerals. Black marble may be found in association with other metamorphic minerals like graphite, pyrite, or various silicates, depending on the impurities in the original limestone and the metamorphic conditions.
- Quarry Sites. Abandoned or active marble quarries are excellent places to find samples, though always seek permission before entering private property.
Quick Check
- Color:
- Black, often with white or gold veins.
- Luster:
- Vitreous to dull (unpolished), high polish (polished).
- Streak:
- White (for calcite-rich varieties).
Explore Black Marble
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.