Krasnovite

Chemical formula: Ba(Al,Mg)(PO₄,CO₃)(OH)₂·H₂O

Krasnovite is a very rare mineral from the phosphate group, forming small, colorless to white crystals with a platy habit.

## Characteristics Krasnovite is a hydrated barium, aluminum, and magnesium phosphate, belonging to the rare minerals. It occurs as very small, platy or acicular crystals, rarely exceeding 1 mm in length. The crystals are usually colorless, white, or have a pale yellow tint. It forms aggregates with a radial structure or chaotic clusters on the surface of other minerals. ## Physical Properties Krasnovite crystals are characterized by a vitreous luster. They are transparent to translucent. The Mohs hardness is approximately 3, and the density ranges between 3.45 and 3.55 g/cm³. The mineral exhibits perfect cleavage in one direction. ## History and Name The mineral was named in honor of the Russian geologist and mineralogist, Professor Nikolai Ivanovich Krasnov (1918–1959). It was discovered on Mount Tas-Kazy in the Talas Alatau Range in Kyrgyzstan and approved by the International Mineralogical Association (IMA) in 1991. ## Uses Due to its extreme rarity and microscopic crystal sizes, krasnovite has no commercial or industrial applications. It is solely an object of scientific and collecting interest for specialized collectors of rare minerals.

Properties

Mohs hardness
2
Color
Pale blue
Luster
Silky
Streak
White
Density
3.70
Cleavage
Two parallel to [010]
Fracture
Uneven
Transparency
Translucent
Crystal system
Orthorhombic

Diagnostic features

## Identification Amateur identification of krasnovite is practically impossible. The mineral is recognized based on its unique occurrence environment (barite-quartz veins), characteristic platy habit of very small crystals, and co-occurrence with other rare phosphates. Final confirmation requires advanced analytical methods, such as X-ray diffraction (XRD) and chemical analysis (EDS). ## Distinguishing from Similar Minerals Krasnovite can be confused with other microscopic, colorless or white secondary minerals, such as wardite, variscite, or goyazite, which may occur in similar parageneses. Differentiation is based on chemical composition analysis (presence of barium) and crystallographic data. ## Crystal Forms Krasnovite forms elongated, flattened crystals with a platy or acicular habit. These crystals often arrange into radial aggregates or form chaotic clusters on the surface of the host rock or other minerals.

Geological environment

## Genesis Krasnovite is a hydrothermal mineral. It forms in low-temperature barite-quartz veins that cut black siliceous shales. Its crystallization is associated with metasomatic processes occurring under these specific geological conditions. ## Mineral Associations This mineral co-occurs with barite, quartz, goyazite, gorceixite, crandallite, wardite, variscite, as well as sulfides such as pyrite and chalcopyrite. ## Localities The only confirmed and described occurrence of krasnovite in the world is its type locality - Mount Tas-Kazy in the Talas Alatau Range, in the Talas Region of Kyrgyzstan.

Rarity

Extremely rare

For collectors

## Quality Criteria The quality of a krasnovite specimen is primarily assessed based on the abundance and visibility of crystals on the rock matrix. Since the crystals are microscopic, specimens where they form dense, well-formed aggregates, ideally contrasting with the substrate, are most valued. The size of individual crystals, although always small, also affects the value. ## Popular Localities The only source of krasnovite specimens is its type locality in Kyrgyzstan. Material from this location is extremely difficult to obtain and appears on the collector's market sporadically.

Care and storage

## Cleaning Krasnovite specimens should be cleaned with utmost care, exclusively using compressed air to remove dust. Due to the microscopic and delicate crystals, contact with water, brushes, or ultrasonics is absolutely inadvisable and risks destroying the specimen. ## What to Avoid Avoid all chemicals, including acids and bases. The mineral is sensitive to changes in temperature and humidity. It should not be exposed to direct sunlight, which can cause its degradation. ## Storage Krasnovite specimens are best stored in stable conditions, in enclosed "micromount" boxes that protect them from dust, mechanical damage, and sudden environmental changes. Display should occur under controlled conditions, away from sources of vibration.

External references

Sources

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