Scolecite
Scolecite · Mineral Specimen
Crystal System
Monoclinic, prismatic crystals typically forming acicular, fibrous, or spray aggregates
Mineral Group
Silicates, specifically Zeolite subgroup
Chemical Formula
CaAl2Si3O10·3H2O
Formation Process
Hydrothermal or low-temperature metamorphic processes, typically precipitating from mineral-rich water filling vesicles in basalt.
About This Crystal
White to colorless acicular or needle-like crystals grouped in striking parallel sprays and radiating clusters, translucent to transparent with a vitreous to silky luster.
Physical Characteristics
White body color, white streak, perfect cleavage on two planes, uneven fracture, specific gravity around 2.2, brittle tenacity, and occasionally exhibits weak fluorescence.
Optical Properties
Biaxial (-) with low birefringence and parallel extinction; refractive index ranges from 1.512 to 1.519.
Hardness & Durability
Origin Region
Notable sources include India (Deccan Traps), Iceland, and the USA. Forms in cavities of basaltic and volcanic rocks.
Hardness & Durability
Mohs hardness of 5.5, poor durability for jewelry due to perfect cleavage and brittle acicular nature, easily scratched.
Care & Maintenance
Clean with a soft brush and warm soapy water. Avoid ultrasonic cleaners, harsh chemicals, and extreme thermal shock.
Rarity & Value
Uncommon mineral specimen; value depends heavily on the perfection and size of the crystal sprays, ranging from affordable to high-end collector prices.
Special Characteristics
Often exhibits pyroelectric and piezoelectric properties, developing an electric charge when heated or compressed.
Lore & History
Associated with inner peace, deep relaxation, and the third eye and crown chakras in metaphysical lore, though these are traditional beliefs rather than scientific claims.