![Labradorite rough fragment ((Ca,Na)[Al,Si]A̲₁O₈) — mineral](https://media.rock.id/labradorite-rough-fragment-a5334d71-da72-40ae-8ddf-0f6ca4463f56-compressed.jpg)
mineral
Labradorite rough fragment
(Ca,Na)[Al,Si]A̲₁O₈
Hardness: 6-6.5 (Mohs), Color: Dark grey to black with iridescent blue/green flashes (labradorescence), Luster: Vitreous, Crystal structure: Triclinic, Cleavage: Perfect in two directions
- Hardness
- 6-6
Identified More mineral →
Explore Labradorite rough fragment in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-6.5 (Mohs), Color: Dark grey to black with iridescent blue/green flashes (labradorescence), Luster: Vitreous, Crystal structure: Triclinic, Cleavage: Perfect in two directions
Formation & geological history
Found in mafic igneous rocks such as basalt and gabbro. Forms as magma cools slowly.
Uses & applications
Primarily used as a gemstone in jewelry, also carved for ornamental objects.
Geological facts
Named after the Labrador Peninsula in Canada where it was first discovered. The optical effect is caused by internal fractures reflecting light.
Field identification & locations
Identified by its distinctive optical effect 'labradorescence'. Commonly found in Canada, Madagascar, and Finland.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock