metamorphic

Polished white marble tile

Calcite marble (predominantly CaCO₃)

AI-generated identification · may be incorrect

Typically Mohs hardness 3, white to cream with gray veining, vitreous to satin luster, granular interlocking calcite crystals, and excellent cleavage in individual calcite grains. The dark circular spots and grout-like seams appear to be manufactured tile features or mounting hardware.

Identified September 11, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when limestone recrystallized under heat and pressure during mountain building; ages vary widely, commonly Paleozoic to Mesozoic. This image shows a human-cut and polished architectural product rather than a natural hand specimen.

Uses & applications

Used for flooring, wall cladding, countertops, sculpture, and decorative interiors; generally low collector value as a tile.

Geological facts

Calcite marble reacts vigorously with dilute hydrochloric acid or vinegar, producing bubbles, though polishing may slow the reaction. Gray veining commonly consists of graphite, clay minerals, quartz, or other impurities.

Field identification & locations

Identify by its cool stone feel, translucent white calcite matrix, soft scratch resistance, and acid reaction; it can be scratched by a steel knife. Common sources include Italy, Greece, Turkey, Spain, India, and the United States.