Labradorite : CSIRO Spectroscopy Database

Labradorite [ (Ca,Na)(Si,Al)₄O₈ ]

Image of Labradorite

Photograph of polished labradorite

Image by Linas Juozėnas (via Wikimedia Commons), CC-BY-SA 4.0

Material properties

Formula	(Ca,Na)(Si,Al)₄O₈
Classification	Plagioclase
Luminescence emitter	Mn
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry	Triclinic, Point group 1, Space group P1 (#2)
Tags	Variety, Aluminosilicate

Composition

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

References for Labradorite

Telfer & Walker 1978, luminescence

0

0

Telfer & Walker 1978, luminescence, other

6

0

0

Specimens of Labradorite

Name	Owner	Materials	Phase purity	Image
MES084 Labradorite / Fayalite / Enstatite	CSIRO	Enstatite, Fe, Fayalite, Mg, Ilmenite, Labradorite (57.0%), Phlogopite, Fe, Quartz	57.0	MES084 Labradorite / Fayalite / Enstatite Image of Labradorite, Enstatite (var. Fe), Fayalite (var. Mg), Ilmenite, Phlogopite (var. Fe) and Quartz in specimen 'MES084 Labradorite / Fayalite / Enstatite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
MT8397 Labradorite / Diopside	CSIRO	Augite, Diopside, Fe2+, Labradorite (40.0%), Lizardite, Nontronite-15.6A, Quartz, Rhodonite, Tremolite	40.0	MT8397 Labradorite / Diopside Image of Labradorite, Augite, Diopside (var. Fe2+), Lizardite, Nontronite-15.6A, Quartz, Rhodonite and Tremolite in specimen 'MT8397 Labradorite / Diopside' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
MES119 Augite / Labradorite / Anorthoclase	CSIRO	Anorthoclase, Armalcolite, Augite, Hematite, Labradorite (30.6%), Orthoclase	30.6	MES119 Augite / Labradorite / Anorthoclase Image of Augite, Anorthoclase, Armalcolite, Hematite, Labradorite and Orthoclase in specimen 'MES119 Augite / Labradorite / Anorthoclase' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
MES200 Quartz	CSIRO	Dolomite, Labradorite (2.0%), Microcline, Orthoclase, Quartz	2.0	MES200 Quartz Image of Quartz, Dolomite, Labradorite, Microcline and Orthoclase in specimen 'MES200 Quartz' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
MES103 Albite	CSIRO	Albite, Ca, Labradorite, Microcline, Muscovite-2M1, Quartz	—	MES103 Albite Image of Albite (var. Ca), Microcline, Muscovite-2M1, Quartz and Labradorite in specimen 'MES103 Albite' [CSIRO], from Ottawa, Ontario, Canada. Size: 20×14×13mm. (C) 2025 CSIRO Mineral Resources. All rights reserved.