Research output: Contribution to journal › Article › peer-review
Abstract: Single crystals of “malakhovite” (an anthropogenic silico-oxide from burnt dumps of the Chelyabinsk coal basin; sp. gr. (Formula presented.), a = 10.555(4) Å, b = 10.928(3) Å, c = 9.059(3) Å, α = 106.338(12)°, β = 95.87(7)°, γ = 124.40(2)°, V = 781.0(5) Å3, Z = 1, R1 = 0.0378 have been investigated by electron-probe microanalysis, Raman spectroscopy, and X-ray diffraction analysis. The idealized formula of the mineral is Ca4(Fe8.563+Mg1.72Ca0.82Fe0.552+Mn0.22Ti0.13)Σ12.00(Fe6.483+Al2.82Si2.71)Σ12.01O40. It is shown that malakhovite is not only chemical but also crystal chemical anthropogenic analogue of khesinite (Ca4Mg2Fe103+O4Fe103+Si2O36). The relationships between the malakhovite and the minerals from the dorrite–khesinite series of the rhönite group in the sapphirine supergroup are discussed.
Original language | English |
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Pages (from-to) | 66-75 |
Number of pages | 10 |
Journal | Crystallography Reports |
Volume | 66 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2021 |
ID: 74772342