metamorphic
White marble tile
Calcite-rich marble (CaCO₃)
AI-generated identification · may be incorrectTypically Mohs hardness 3, white to pale gray with faint gray veining, vitreous to dull luster, and interlocking calcite crystals; calcite shows perfect rhombohedral cleavage and effervesces with dilute acid. The visible piece is polished and cut into a tile.
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Physical properties
Typically Mohs hardness 3, white to pale gray with faint gray veining, vitreous to dull luster, and interlocking calcite crystals; calcite shows perfect rhombohedral cleavage and effervesces with dilute acid. The visible piece is polished and cut into a tile.
Formation & geological history
Marble forms when limestone recrystallizes under heat and pressure during regional or contact metamorphism; its exact geological age depends on the quarry, commonly Paleozoic to Mesozoic. This specimen may be human-processed architectural stone rather than a natural hand specimen.
Uses & applications
Used extensively for flooring, walls, countertops, sculpture, monuments, and decorative stone; it is not generally used as a gemstone. Value is primarily architectural and depends on color, veining, size, and finish.
Geological facts
The pale veining may consist of calcite-rich bands or minor impurities such as quartz, mica, or graphite. Acid testing and a copper-coin or steel scratch test help distinguish it from harder quartzite.
Field identification & locations
Common sources include Italy, Greece, Turkey, Spain, India, and the United States. Identify it by its carbonate reaction, relatively low hardness, crystalline appearance, and polished surface; ordinary tile fragments have little collector value.
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