How do I identify Fluckite?

Fluckite can be identified by its hardness of 3.5 - 4 on the Mohs scale, colorless color. Look for these key characteristics when examining specimens.

What color is Fluckite?

Fluckite typically appears in colorless, pale pink, pale rose red. Color can vary depending on impurities and formation conditions.

How hard is Fluckite?

Fluckite has a hardness of 3.5 - 4 on the Mohs scale. This gives it moderate hardness.

Fluckite

A variety of Minerals

What is Fluckite?

Fluckite is an arsenate mineral with the chemical formula CaMnH2(AsO4)2·2(H2O). Fluckite's mineral crystallography is triclinic meaning it has three axis of different length and three different interior angles that do not equal 90°. Because fluckite possesses three axes with different angles and lengths it is an anisotropic mineral. This means that it has more than one optic axis. This mineral is a member of the P1 space group meaning that it can be rotated 360° degrees and inverted to obtain the original figure. Optically, this mineral has positive biaxial birefringence, which can be shown obtaining an interference figure that is blue in the upper right and lower left quadrants of the figure while looking down the c- axis. Fluckite possesses moderate optical relief which is the degree to which the mineral stands out from the mounting medium.

Fluckite Market Value Calculator

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

Fluckite Localities Map

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

Map preview

North ZoneCentral RidgeSouth Basin

Key Characteristics

Formation of Fluckite

Fluckite was first described in 1980 for an occurrence in the Gabe-Gottes Mine in Haut-Rhin, Alsace, France, and named for mineralogist Pierre Fluck of Louis Pasteur University in Strasbourg, France. The mineral was found in at a depth of 100 m (330 ft). It occurs as a post-mine phase on carbonate gangue. It occurs in association with native arsenic, tennantite, skutterudite, sainfeldite, pharmacolite, villyaellenite, picropharmacolite, calcite, dolomite, ankerite and quartz.