Kurnakovite
A variety of Minerals
What is Kurnakovite?
Kurnakovite is a hydrated borate of magnesium with the chemical composition MgB3O3(OH)5·5H2O. It is a member of the inderite group and is a triclinic dimorph of the monoclinic inderite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Kurnakovite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Kurnakovite Localities Map
See where Kurnakovite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Kurnakovite
Kurnakovite has triclinic - pinacodial crystallography. It forms as rough, prismatic crystals, typically in dense aggregates. Kurnakovite has distinct cleavage and a conchoidal fracture. Its tenacity is brittle and it ranges between 2.5 – 3 on the Mohs hardness scale. It is not soluble in water, though it will start dissolving in warm acid. Kurnakovite is usually colorless or white and either transparent or translucent. It has a vitreous, pearly luster and a refractive index of between 1.488 - 1.525.
Formation of Kurnakovite
Kurnakovite, was first described by Godlevsky in 1940 for an occurrence in the Inder borate deposits in Atyrau Province, Kazakhstan, and is named for Russian mineralogist and chemist Nikolai Semenovich Kurnakov (1860–1941). In addition to the type locality in Kazakhstan, kurakovite has also been reported from the Zhacang-Caka brine lake, Tibet; the Kirka borate deposit, Kiitahya Province, Turkey; the Kramer borate deposit, Boron, Kern County, California; Death Valley National Park, Inyo County, California; and the Tincalayu borax deposit, Salar del Hombre Muerto, Salta Province, Argentina.
Quick Facts
Physical Properties
- Color
- White, colourless in transmitted light
- Hardness (Mohs)
- 2.5 - 3
- Density
- 1.855 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- MgB3O3(OH)5 · 5H2O
- Elements
- B, H, Mg, O
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Kurnakovite FAQs
How do I identify Kurnakovite?
Kurnakovite can be identified by its hardness of 2.5 - 3 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Kurnakovite?
Kurnakovite typically appears in White, colourless in transmitted light. Color can vary depending on impurities and formation conditions.
How hard is Kurnakovite?
Kurnakovite has a hardness of 2.5 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the characteristics of kurnakovite of Kurnakovite?
Kurnakovite has triclinic - pinacodial crystallography. It forms as rough, prismatic crystals, typically in dense aggregates. Kurnakovite has distinct cleavage and a conchoidal fracture. Its tenacity is brittle and it ranges between 2.5 – 3 on the Mohs hardness scale. It is not soluble in water, though it will start dissolving in warm acid. Kurnakovite is usually colorless or white and either transparent or translucent. It has a vitreous, pearly luster and a refractive index of between 1.488 - 1.525.
What is the formation of kurnakovite of Kurnakovite?
Kurnakovite, was first described by Godlevsky in 1940 for an occurrence in the Inder borate deposits in Atyrau Province, Kazakhstan, and is named for Russian mineralogist and chemist Nikolai Semenovich Kurnakov (1860–1941). In addition to the type locality in Kazakhstan, kurakovite has also been reported from the Zhacang-Caka brine lake, Tibet; the Kirka borate deposit, Kiitahya Province, Turkey; the Kramer borate deposit, Boron, Kern County, California; Death Valley National Park, Inyo County, California; and the Tincalayu borax deposit, Salar del Hombre Muerto, Salta Province, Argentina.
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