mineral
Black Tourmaline
Schorl (NaFe3Al6(Si6O18)(BO3)3(OH)4)
AI-generated identification · may be incorrectHardness of 7 to 7.5 on the Mohs scale, deep black color, vitreous luster, and trigonal crystal system with prismatic habit.
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Physical properties
Hardness of 7 to 7.5 on the Mohs scale, deep black color, vitreous luster, and trigonal crystal system with prismatic habit.
Formation & geological history
Forms in pegmatites and hydrothermal veins associated with cooling magma and metamorphic environments.
Uses & applications
Widely used in jewelry, metaphysical healing, and industrial applications due to its pyroelectric and piezoelectric properties.
Geological facts
Black tourmaline is a natural electrical semiconductor and is one of the most popular minerals for grounding and protection in crystal healing.
Field identification & locations
Easily identified by its striated prismatic crystals, conchoidal fracture, and lack of cleavage; found globally, notably in Brazil and the USA.
