How do I identify Legrandite?

Legrandite can be identified by its hardness of 4.5 on the Mohs scale, Yellow to colourless color, Vitreous, Resinous, Waxy, Sub-vitreous luster, Monoclinic crystal system. Look for these key characteristics when examining specimens.

What color is Legrandite?

Legrandite typically appears in Yellow to colourless, pale yellow to colourless in transmitted light. Color can vary depending on impurities and formation conditions.

How hard is Legrandite?

Legrandite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.

Legrandite

A variety of Minerals

Rare

Legrandite specimen - rock identification

What is Legrandite?

Legrandite is an extremely rare mineral prized by collectors for its yellow or yellow-orange color. Although exceptionally beautiful, this mineral doesn't find its use in jewelry because of its fragility. The smaller specimens are transparent, but the bigger the crystal the more opaque it gets.

Etymology & Origins

It was first described in 1934 for an occurrence in the Flor de Peña Mine, Nuevo León, Mexico and named after M. Legrand, a Belgian mining engineer .

Optical Properties

Refractive Index: 1.702-1.740
Birefringence: 0.06
Pleochroism: Yellow to colourless
Optical Character: Biaxial positive

Legrandite Market Value Calculator

Estimate the market value of Legrandite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Legrandite Localities Map

See where Legrandite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

Health & Safety Information

⚠️Harm Reason: Legrandite dust is toxic because it contains heavy metals Arsenic, Zinc.
⚠️Heavy Metal: Arsenic
⚠️How to prevent the risks of Legrandite?