mineral

Yellow calcite fragment

Calcite (CaCO₃), likely honey/yellow calcite

AI-generated identification · may be incorrect

Typically Mohs hardness 3, pale yellow to honey color, vitreous to pearly luster, and excellent rhombohedral cleavage; translucent pieces may show internal zoning or fibrous texture. The specimen appears rough, yellow, and weakly translucent, though image-only identification is tentative.

Identified August 18, 2026More mineral →

Explore Yellow calcite fragment in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Forms when calcium-carbonate-rich groundwater precipitates in caves, veins, cavities, and sedimentary deposits; yellow coloration commonly comes from iron or organic impurities. Calcite occurs from ancient sedimentary environments through modern hydrothermal systems.

Uses & applications

Used in cement, lime, aggregate, construction stone, soil treatment, and chemical production; transparent attractive pieces are sold as cabinet or metaphysical specimens. Common material has low commercial value.

Geological facts

Calcite effervesces strongly with dilute hydrochloric acid or vinegar, unlike most silicate minerals. It shows birefringence, so printed text viewed through a clear fragment may appear doubled.

Field identification & locations

Common worldwide, especially in limestone regions, hydrothermal veins, caves, and locations such as Mexico, Brazil, Iceland, and the United States. Confirm with hardness, rhombohedral cleavage, and acid reaction; avoid scratching valuable pieces.