Unusual 4.4" Dogtooth Calcite Crystal - Morocco

This is an unusual shaped dogtooth calcite crystal collected from Morocco. This crystal is 4.4" tall, and has a brown-yellow coloration. The crystal has stress fractures that likely give the crystal its curved shape, however there is little damage to its termination.

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.
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DETAILS
SPECIES
Calcite
LOCATION
Morocco
SIZE
4.4" tall, 2.5" wide
CATEGORY
ITEM
#57374