2.65" Intense Orange Calcite Crystal Cluster - Poland

This is a 2.65" wide cluster of sharp orange calcite crystals on basalt. This comes from the Grabiszyce Basalt Quarry in the Luban District of Poland. Under shortwave UV, these crystals fluoresce a white-orange color.

One edge of the basalt has been cut flat for presentation purposes.

About Calcite Crystals

Calcite crystals are a form of calcium carbonate (CaCO₃) known for their diverse shapes, transparency, and vibrant range of colors. They typically form in rhombohedral, scalenohedral, or prismatic shapes, often with well-defined, sharp edges and glossy surfaces. Calcite crystals are often translucent or transparent, sometimes displaying a double refraction effect where objects viewed through the crystal appear doubled. They can appear in various colors—white, clear, yellow, pink, blue, green, and orange—depending on impurities or trace minerals.

A notable characteristic of calcite is its reaction with weak acids like vinegar, which causes it to effervesce, or fizz, as it releases carbon dioxide. This property makes calcite crystals a key tool in geological identification and studies. Calcite forms in many environments, from sedimentary rocks like limestone and marble to hydrothermal veins.
FOR SALE
$35
DETAILS
SPECIES
Calcite
LOCATION
Grabiszyce Basalt Quarry, Lesna, Luban District, Poland
SIZE
2.65 x 2 x 1.2"
CATEGORY
ITEM
#311452