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This Specimen has been sold.
HERE ARE SOME OTHER SIMILAR FOSSILS FOR SALE
3.4" Unusual Calcite Crystal Formation - Telemark, Norway
This is a unique, 3.4" wide cluster of calcite crystals that was collected from the Kjørholt mine near Porsgrunn, Norway. There are a variety of calcite formations on this specimen including small bladed crystals, large scalenohedral crystals and a rare crystal formation that the dealer referred to as "twin calcite". This crystal type was first discovered in 2009, with many of the specimens featuring micro-apophyllite crystals encrusting the calcite.
The base of the specimen has been stabilized with glue. It comes with an acrylic display stand.
The base of the specimen has been stabilized with glue. It comes with an acrylic display stand.
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.
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.
SPECIES
Calcite
LOCATION
Kjørholt Mine, Brevik, Porsgrunn, Telemark, Norway
SIZE
3.4 x 3.2"
CATEGORY
ITEM
#177555
