mineral
Labradorite
Plagioclase Feldspar ((Na,Ca)(Al,Si)4O8)
AI-generated identification · may be incorrectHardness of 6-6.5 on Mohs scale, dark gray to black base color with vibrant iridescent flashes of blue and green, vitreous luster, triclinic crystal system.
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Physical properties
Hardness of 6-6.5 on Mohs scale, dark gray to black base color with vibrant iridescent flashes of blue and green, vitreous luster, triclinic crystal system.
Formation & geological history
Forms in mafic igneous rocks such as basalt and gabbro through slow cooling of magma deep within the Earth's crust.
Uses & applications
Widely used as an ornamental gemstone in jewelry, for decorative countertops, and highly prized by mineral collectors.
Geological facts
Exhibits a unique optical phenomenon called labradorescence, caused by light diffraction between microscopic mineral lamellae.
Field identification & locations
Identified by its distinct play-of-color flash when rotated under light; commonly sourced from Labrador, Canada, and Madagascar.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous