Carbon and Graphite Newsgroup

Location: RUSSIA, PETROZAVODSK KARELIA

Pigment color black carbon shungite.
Mineral Inorganic Black Pigment of Shungite Zazhoginsky shungite is a unique natural phenomenon. Due to its unusual composition, structure and properties, it is used for a variety of purposes – in metallurgy, water treatment, medicine, chemical industry, and construction. Shungite-bearing rocks contain carbon. 30% of shungite is globular metastable shungite carbon and 70% is finely dispersed silicate particles. X-ray shows that shungite carbon is a non-crystalline form of carbon with a graphite-like structure. At the same time, shungite lacks structured graphite pattern. Compared to a graphite monolayer, the cellular pattern of shungite is defective, highly deformed, and is characterized by an increased interatomic spacing. Despite the fact that there are no chemical bonds between carbon and SiO2 in shungite, they are not broken during powdering and remain two interpenetrating structures. What are the properties of shungite powders? Finely dispersed shungite powders have abnormal thermal conductivity, thermal capacity, electroconductivity, and diamagnetic properties with the effect of wave absorption. Shungite powder (1-20 microns) is a non-dustforming, environmentally safe black powder with no additives. Properties 1. Carbon content – no less than 20% 2. Density – 300-400 g/dm3 3. Ash content, % – no more than 75% 4. Particle size – 1-20 microns 5. Mohs hardness – 3 6. Pigment – mineral 7. Color – black