How do I identify Holmquistite?

Holmquistite can be identified by its hardness of 5.5 on the Mohs scale, Black color. Look for these key characteristics when examining specimens.

What color is Holmquistite?

Holmquistite typically appears in Black, dark-violet, light sky-blue. Color can vary depending on impurities and formation conditions.

How hard is Holmquistite?

Holmquistite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.

How to Identify Holmquistite | Properties, Meaning & Uses

What is Holmquistite?

Holmquistite is a lithium magnesium aluminium inosilicate mineral with chemical formula Li2(Mg,Fe2+)3Al2Si8O22(OH)2. It crystallizes in the orthorhombic crystal system as prismatic crystals up to 10 cm (3.9 in) or as massive aggregates. It has a Mohs hardness of 5-6 and a specific gravity of 2.95 to 3.13. Color could vary from black, dark violet to light sky blue. It occurs as metasomatic replacements on the margins of lithium rich pegmatites. It was first described in 1913 from an occurrence in Utö, near Stockholm, Sweden. It was named for the Swedish petrologist Per Johan Holmquist (1866–1946).

Holmquistite Market Value Calculator

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

Holmquistite Localities Map

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