metamorphic

Brecciated marble (decorative stone slab)

Calcite-rich marble breccia; chiefly calcite (CaCO₃), potentially with dolomite and minor iron oxides

AI-generated identification · may be incorrect

Angular pale gray-white fragments with reddish-brown veining in a darker matrix; calcite has Mohs hardness 3, vitreous to pearly luster, and trigonal crystal structure. The image appears to show a polished or cut slab, so hardness and cleavage are not directly assessable.

Identified September 23, 2026More metamorphic →

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Physical properties

Formation & geological history

Formed when limestone or dolostone recrystallized during metamorphism; brecciation fractured the rock, and mineral-rich fluids or later carbonate cement filled the gaps. The exact age and locality cannot be determined from the image.

Uses & applications

Used as decorative cladding, countertops, flooring, and ornamental stone; less suitable for acidic or heavily worn surfaces because calcite scratches and reacts with acids.

Geological facts

Breccia is defined by its angular rock fragments, unlike conglomerate, whose clasts are rounded.

Field identification & locations

Look for angular pale clasts enclosed by a contrasting matrix and calcite-rich veins; a drop of dilute acid fizzes on exposed calcite. Marble and decorative breccias occur worldwide.