metamorphic
Polished marble (likely calcitic marble)
Calcite-rich marble; primarily calcium carbonate, CaCO₃
AI-generated identification · may be incorrectTypically white to cream with cloudy gray veining, sugary crystalline texture, vitreous-to-satin polish, Mohs hardness 3, and rhombohedral calcite cleavage; reacts vigorously with dilute hydrochloric acid. The image appears to show a polished architectural slab.
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Physical properties
Typically white to cream with cloudy gray veining, sugary crystalline texture, vitreous-to-satin polish, Mohs hardness 3, and rhombohedral calcite cleavage; reacts vigorously with dilute hydrochloric acid. The image appears to show a polished architectural slab.
Formation & geological history
Formed when limestone recrystallized under heat and pressure during metamorphism; individual pieces may range from Paleozoic to Mesozoic or younger depending on the quarry. Common sources include Italy, Turkey, Greece, Spain, India, and the United States.
Uses & applications
Used for countertops, flooring, wall cladding, sculpture, monuments, and decorative stone; attractive veined material may be sold as interior-design stone rather than jewelry rough.
Geological facts
Marble is softer and more acid-sensitive than granite, so lemon juice, vinegar, and acidic cleaners can etch its surface. The gray patterns commonly reflect impurities, stylolites, or mineral-rich fractures.
Field identification & locations
Identify by its calcite reaction, low hardness, interlocking crystalline texture, and lack of visible quartz grains; distinguish it from quartzite, which is harder and acid-resistant. Exact variety requires petrographic or quarry information.
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