metamorphic
Likely calcite-rich limestone or marble
Calcite (CaCO₃); possibly recrystallized limestone (marble)
AI-generated identification · may be incorrectWhite to beige, dull-to-pearly luster, granular crystalline texture, and irregular cleavage/fracture; calcite has Mohs hardness 3 and specific gravity about 2.71. The layered, foliated-looking appearance may indicate marble, though the photograph cannot confirm it.
Identified More metamorphic →
Explore Likely calcite-rich limestone or marble in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
White to beige, dull-to-pearly luster, granular crystalline texture, and irregular cleavage/fracture; calcite has Mohs hardness 3 and specific gravity about 2.71. The layered, foliated-looking appearance may indicate marble, though the photograph cannot confirm it.
Formation & geological history
If marble, it formed when limestone recrystallized during regional or contact metamorphism, commonly at various geologic ages. If unaltered limestone, it is sedimentary and formed from accumulated carbonate mud or shells in a marine environment.
Uses & applications
Used as crushed stone, cement and lime feedstock, aggregate, dimension stone, and—when attractive—雕? decorative marble; calcite specimens are also collected.
Geological facts
Calcite effervesces vigorously with dilute hydrochloric acid or strong vinegar, whereas dolomite reacts weakly unless powdered. Marble may show interlocking calcite grains and acid reaction across a fresh surface.
Field identification & locations
Common in carbonate terrains worldwide; test a fresh spot for fizz, inspect grain size, and check hardness against a copper coin or steel nail. The specimen appears relatively ordinary and weathered.
More like this
