Mineral Family: Feldspar

Chemical Composition: NaAISIO8] to CaAl2 Si2  O8
Cleavage: Perfect
Color: Dark gray to grey-black with colorful iridescence
Crystal System: Triclinic
Form/Habit: Massive
Fracture: Uneven, splintery, brittle
Gravity: 2.65-2.75
Hardness: 6-6.5
Luminescence: Violet (long wave) / Red (short wave)
Luster: Pearly
Streak: White
Transparency: Translucent, opaque

Where does Labradorite come from?

Labradorite Placeholder
Labradorite

Labradorite deposits are found in Canada, Madagascar, Mexico and Finland

What is Labradorite?

Labradorite is a Feldspar, which is in turn a Silicate mineral. Silicate minerals are the largest family of minerals, including more than 25% of all known minerals and 40% of all common minerals. In addition to being a major part of the Earth’s crust, Silicate minerals have also been found on the moon and in meteorites. Silicates are minerals which contain the elements Silicon (a light gray shiny metal) and Oxygen (a colorless gas). There are six main groups of Silicate minerals, and these main groups are further subdivided into secondary subdivisions, such as Quartz and Feldspar. Feldspar is a large mineral family in its own right and is subdivided into Alkali Feldspars (rich in Potassium – for example, Amazonite) and Plagioclase Feldspars (rich in Calcium – for example, Sunstone).  Labradorite is a Plagioclase Feldspar.

How is Labradorite formed?

Labradorite is formed in mafic igneous rocks such as Basalt and Gabbo.  It grows in crystalline masses that can range in size from microscopic to over a yard or more in length. On rare occasions, it grows tabular crystals. Labradorite is characterized by multiple layers of Feldpsar that grow on top of one another.  When light shins through these thin layers it results in a brilliant play of iridescence color, known as the “Schiller effect.” The most common colors are blue, green and gold. But depending on the local, the pink, purple and a rainbow of colors may also be seen.

How is Labradorite mined?

Typically mined from the primary deposits still having their original relationship with the host rock.

What is Golden Labradorite?

Golden Labradorite is a marketing name that is used in the metaphysical industry for the mineral Bytownite.  Bytownite and Labradorite are closely related and part of the plagioclase series.  A series is a scientific term for a mineral gradually transforming into a different mineral.  This process happens on an atomic level.  For example, in the plagioclase series sodium and calcium atoms take each other’s place.  The mineral Albite is mostly rich in sodium, while at the other end of the plagioclase series the mineral Anorthite is mostly rich in calcium.  In the middle of the series are minerals like Labradorite (50-70% on the way to Anorthite) and Bytownite (70-90% of the way to Anorthite).  Sunstone, known scientifically as Oligoclase, is also part of this series (10-30% of the way to Anorthite).