Labradorite [ (Ca,Na)(Si,Al)4O8 ]

Image of Labradorite

Material properties

Formula (Ca,Na)(Si,Al)4O8
Crystal symmetry Triclinic, Point group 1, Space group P1 (#2)
Classification Plagioclase
Luminescence emitter Mn
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Tags Aluminosilicate, Variety

Composition

Element Atoms
O 8
Na 0.4
Ca 0.6
Al 1.6
Si 2.4
Total: 13

References for Labradorite

Reference
Lines Spectra Images
Telfer & Walker 1978, luminescence 1 0 0
Telfer & Walker 1978, luminescence, other 6 0 0

Specimens of Labradorite

Name Owner Materials Phase purity Image
MES084 Ferrosilite CSIRO Enstatite (var. Fe), Fayalite (var. Mg), Ilmenite, Labradorite (57.0%), Phlogopite (var. Fe), Quartz 57.0
MT8397 Pigeonite CSIRO Augite, Diopside (var. Fe2+), Labradorite (40.0%), Lizardite, Nontronite-15.6A, Quartz, Rhodonite, Tremolite 40.0
MES119 Rhönite CSIRO Anorthoclase, Armalcolite, Augite, Hematite, Labradorite (30.6%), Orthoclase 30.6
MES200 Quartz CSIRO Dolomite, Labradorite (2.0%), Microcline, Orthoclase, Quartz 2.0
MES103 Labradorite CSIRO Albite (var. Ca), Labradorite, Microcline, Muscovite-2M1, Quartz —