metamorphic

White Marble

Recrystallized Calcite (CaCO3)

AI-generated identification · may be incorrect

Hardness: 3 on Mohs scale; Color: Pure white to off-white; Luster: Waxy to vitreous; Crystal structure: Trigonal/hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.7

Hardness: 3 on Mohs scale
Color: Pure white to off-white
Luster: Waxy to vitreous

Identified March 25, 2026More metamorphic →

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Physical properties

Hardness: 3 on Mohs scale; Color: Pure white to off-white; Luster: Waxy to vitreous; Crystal structure: Trigonal/hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.7

Formation & geological history

Formed through the regional or contact metamorphism of sedimentary carbonate rocks (limestone or dolostone) under high heat and pressure, causing recrystallization of carbonate minerals.

Uses & applications

Used widely in sculpture (due to its relative softness), construction (tiles, countertops), religious ornaments, and decorative jewelry.

Geological facts

Marble has a low refractive index, allowing light to penetrate several millimeters into the stone before being scattered out, which gives it a characteristic 'waxy' look often compared to human skin in sculptures.

Field identification & locations

Identify by its softness (can be scratched by a copper coin) and its effervescence (bubbling) when in contact with dilute hydrochloric acid. Commonly found in Italy (Carrara), Greece, and various mountain ranges globally.