Rock Identifier
Pink Tourmaline in Quartz Matrix (Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)) — mineral
mineral

Pink Tourmaline in Quartz Matrix

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)

Hardness: 7-7.5 (Tourmaline), 7 (Quartz); Color: Pink to rubellite red embedded in white or translucent matrix; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: Indistinct; Specific gravity: 3.0-3.2

Hardness
7-7
Luster
Vitreous to greasy
Identified More mineral

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Physical properties

Hardness: 7-7.5 (Tourmaline), 7 (Quartz); Color: Pink to rubellite red embedded in white or translucent matrix; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: Indistinct; Specific gravity: 3.0-3.2

Formation & geological history

Formed in lithium-rich igneous pegmatites through hydrothermal processes. Most specimens are from the Phanerozoic eon, often found in granitic intrusions where boron-rich fluids crystallize late in the cooling process.

Uses & applications

Used primarily in jewelry as a gemstone, as lapidary rough for carvings, and as a popular collector's mineral specimen. Pink tourmaline is also used in metaphysical practices.

Geological facts

Pink tourmaline is often called 'Rubellite' when the color is deep and saturated. This variety is pyroelectric, meaning it can generate an electrical charge when heated or cooled, which often causes it to attract dust.

Field identification & locations

Identify by the characteristic elongated, striated prismatic crystals of tourmaline embedded in a hard, glassy quartz matrix. Commonly found in Minas Gerais (Brazil), Madagascar, Afghanistan, and San Diego County (USA). Look for the vertical striations on the crystal faces.