Uakitite

Chemical formula: V<sup>3+</sup>N<sup>3-</sup>

Uakitite is an extremely rare mineral, a vanadium nitride, found as microscopic grains in an iron meteorite.

## Characteristics Uakitite is a vanadium nitride, belonging to the very rare group of nitrides. It occurs as extremely small, rounded grains, typically not exceeding 5 micrometers in size. Due to its microscopic size, its visual features can only be observed under a microscope in reflected light, where it reveals a metallic luster and a light gray color with a delicate pinkish tint. ## Physical Properties This mineral is characterized by very high hardness, estimated at 9-10 on the Mohs scale, which places it among the hardest known minerals. Its density, calculated based on its chemical composition and crystal structure, is 6.13 g/cm³. It is completely opaque and has a metallic luster. ## Colors and Varieties The observed color of uakitite is light gray, with a characteristic, subtle pinkish tint visible in microscopic examinations. No color varieties or commercial varieties are known. ## History and Name The mineral's name comes from the Uakit meteorite, in which it was first identified. This meteorite was found in the Bauntovsky (Evenkiysky) district of Buryatia, Russia. Uakitite was officially recognized as a new mineral species by the International Mineralogical Association (IMA) in 2018. ## Applications Due to its extreme rarity and microscopic size, uakitite has no practical applications. Its significance is purely scientific and collectible, as a unique component of meteorites.

Properties

Mohs hardness
9-10
Luster
Metallic
Density
6.13
Transparency
Opaque
Crystal system
Cubic

Diagnostic features

## Identification Identification of uakitite is impossible without advanced analytical equipment. Recognition requires the use of a scanning electron microscope (SEM) with chemical composition analysis (EDS), which can confirm the presence of vanadium and nitrogen. ## Distinguishing from Similar Minerals Within the meteorite, it can be confused with other rare nitrides, such as carlsbergite (CrN) or osbornite (TiN). Differentiation is only possible based on precise chemical analysis. ## Crystal Forms Uakitite forms microscopic, rounded or irregular grains embedded in the metallic matrix of the meteorite. No well-formed crystal faces are observed.

Geological environment

## Genesis Uakitite formed under conditions of extremely low oxygen partial pressure and high temperature within the parent body of an iron meteorite of the IIAB type, from which the Uakit meteorite originated. ## Mineral Associations It co-occurs with minerals typical of iron meteorites, such as kamacite and taenite (iron-nickel alloys), as well as troilite and daubréelite. ## Localities The only confirmed locality of uakitite in the world is the Uakit meteorite, found in Buryatia, Russia.

Rarity

Extremely rare

For collectors

## Quality Criteria For collectors, the value of a specimen lies in possessing a fragment of the Uakit meteorite with confirmed presence of uakitite. Since the mineral is microscopic, its visual "quality" is irrelevant. Authenticity and scientific documentation of the specimen are what matter. ## Popular Localities The only source of specimens is the Uakit meteorite from Russia.

Care and storage

## Cleaning Specimens containing uakitite (meteorite fragments) should generally not be cleaned to avoid damaging the delicate matrix and microscopic inclusions. Any procedures should only be performed by specialists. ## What to Avoid Moisture should be avoided, as it can cause oxidation (rusting) of the meteorite's iron matrix. Contact with chemicals and extreme temperature changes should also be avoided. ## Storage Meteorite fragments with uakitite are best stored in a dry environment, for example, in specialized boxes with a desiccant, to prevent degradation.

External references

Sources

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