mineral

Honey calcite (orange calcite)

Calcite, calcium carbonate (CaCO₃)

AI-generated identification · may be incorrect

Typically honey-yellow to orange-brown, translucent, with vitreous to pearly luster and prominent rhombohedral cleavage; Mohs hardness 3, specific gravity about 2.71. The specimen appears rough and massive, with possible iron-oxide staining or inclusions.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins, sedimentary limestone cavities, and evaporite environments through precipitation from calcium-rich fluids. Calcite deposits range from ancient sedimentary rocks to modern mineral-forming systems.

Uses & applications

Used in cement, lime, aggregate, glass manufacture, and chemical processing; transparent crystals are collected and occasionally cut as decorative stones. This rough material is primarily a collector specimen.

Geological facts

Calcite strongly effervesces with dilute hydrochloric acid or vinegar, though reaction with vinegar may be slow. It commonly exhibits birefringence, making printed text appear doubled through clear pieces.

Field identification & locations

Identify by its softness, rhombohedral cleavage, and acid reaction; it is commonly found in limestone regions, hydrothermal veins, and caves worldwide, including Mexico, the United States, Brazil, and Iceland.