metamorphic
White marble (likely calcitic marble)
Calcite-rich marble; primarily calcium carbonate, CaCO₃
AI-generated identification · may be incorrectWhite, fine- to medium-grained, crystalline, with a sugary texture and vitreous to pearly luster; Mohs hardness 3, nonfoliated, and typically reacts vigorously with dilute hydrochloric acid. Cleavage is inherited from calcite and fragments may show sparkle.
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Physical properties
White, fine- to medium-grained, crystalline, with a sugary texture and vitreous to pearly luster; Mohs hardness 3, nonfoliated, and typically reacts vigorously with dilute hydrochloric acid. Cleavage is inherited from calcite and fragments may show sparkle.
Formation & geological history
Formed when limestone or dolostone was recrystallized by heat and pressure during regional or contact metamorphism. Its exact geological age cannot be determined from the photograph; marble occurs in metamorphic belts worldwide.
Uses & applications
Used for sculpture, tiles, countertops, aggregate, lime, and cement; attractive pieces may be polished for decorative or lapidary use.
Geological facts
Marble is not a single mineral but a metamorphic rock dominated by recrystallized carbonate minerals. Impurities such as graphite, iron oxides, or silicates can create gray, green, yellow, or pink colors.
Field identification & locations
Field identification relies on its white crystalline appearance, relatively soft surface, and acid fizz; it can be scratched by steel and is softer than quartz. Common sources include Italy, Greece, Turkey, India, and the United States.
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