Orange Calcite
Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/14730981@N08">James Petts</a> from London, England (CC BY-SA 2.0)
Mineral NameOrange Calcite
Chemical FormulaCaCO3
Mohs Hardness3
Crystal Systemtrigonal
Lustervitreous
Streak Colorwhite
Cleavageperfect rhombohedral in three directions
Fractureconchoidal to uneven
Specific Gravity2.71
Colorsorange, yellow, white
Transparencytranslucent
Type LocalityWorldwide (e.g., Mexico, USA, Iceland)
Mineral GroupCarbonates
Usescement production, construction material, agricultural soil treatment, optical instruments (Iceland spar), ornamental stone, collector specimens
Associated Mineralsquartz, fluorite, barite, galena, sphalerite
Raritycommon
Description
A close-up view of an orange calcite sample, displaying a granular to crystalline texture with lighter, possibly white, areas interspersed throughout its rough, uneven surface.
Geological Context
Calcite is a ubiquitous mineral found in various geological settings, including sedimentary rocks (limestone, marble), hydrothermal veins, and as a secondary mineral in igneous and metamorphic rocks. It often precipitates from groundwater in caves, forming speleothems.
