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
Streak ColorWhite
CleavagePerfect rhombohedral in three directions
FractureConchoidal to uneven
Specific Gravity2.71
Colorsorange, white
TransparencyTranslucent
Type LocalityWorldwide
Mineral GroupCarbonates
Usescement production, construction material, soil treatment, optical instruments (Iceland spar), decorative stone, collector specimens
Associated Mineralsquartz, fluorite, barite, pyrite, galena, sphalerite
Raritycommon
Description
This is a rough, blocky specimen of orange calcite, exhibiting a translucent quality and a somewhat sugary or granular texture on its surfaces, with areas of lighter white.
Geological Context
Calcite is a ubiquitous mineral found in diverse geological settings, forming major components of sedimentary rocks like limestone and marble, and frequently occurring in hydrothermal veins and as a secondary mineral in various rock types.
