Scolecite is a mineral that belongs to the zeolite group. Scolecite typically forms slender, needle-like (acicular) crystals frequently appearing in radiating aggregates. Its most common colors are colorless or white, but it can also occur in shades of pink, yellow, green, and rarely orange. The crystals can be transparent or translucent.
Scolecite is primarily found in basaltic lava flows. This region produces high-quality mineral specimens, including scolecite, often found alongside other zeolites like stilbite, apophyllite, and heulandite. Scolecite exhibits pyroelectricity and piezoelectricity, which can create a temporary electrical charge when heated or subjected to mechanical pressure. It's also known for its ability to absorb and release water and other molecules, a characteristic feature of zeolite minerals.
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Chemical Formula: CaAl2Si3O10⋅3H2O
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Crystal System: Monoclinic
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Appearance: Scolecite typically forms slender, needle-like crystals that can be white, colorless, or occasionally tinted with shades of pink or green.
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Luster: Vitreous to silky
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Hardness: 5 to 5.5 on the Mohs scale
