metamorphic

Marble

Metamorphosed Limestone

AI-generated identification · may be incorrect

Hardness of 3 on Mohs scale, typically white or light colored with variable veining, sugary to crystalline texture, non-foliated. Composed primarily of interlocking calcite or dolomite crystals.

Identified September 23, 2026More metamorphic →

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Physical properties

Hardness of 3 on Mohs scale, typically white or light colored with variable veining, sugary to crystalline texture, non-foliated. Composed primarily of interlocking calcite or dolomite crystals.

Formation & geological history

Formed by regional or contact metamorphism of limestone or dolostone under high heat and pressure, causing the carbonate minerals to recrystallize. Occurs worldwide in mountainous regions.

Uses & applications

Extensively used as a dimension stone in construction, flooring, countertops, and sculpture. Crushed marble is used in construction, agriculture, and as a filler.

Geological facts

The Taj Mahal and the Lincoln Memorial are famously constructed from white marble. Veins and swirls in marble are typically due to various mineral impurities such as clay, silt, sand, iron oxides, or chert.

Field identification & locations

Identified by its relatively low hardness (can be scratched by a knife) and by effervescing (fizzing) when exposed to dilute hydrochloric acid. Common worldwide.