Abstract

Single crystals of “malakhovite” (an anthropogenic silico-oxide from burnt dumps of the Chelyabinsk coal basin; sp. gr. P\(\bar {1}\), 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) ų, 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(Fe\(_{{8.56}}^{{3 + }}\)Mg_1.72Ca_0.82Fe\(_{{0.55}}^{{2 + }}\)Mn_0.22Ti_0.13)_Σ12.00(Fe\(_{{6.48}}^{{3 + }}\)Al_2.82Si_2.71)_Σ12.01O₄₀. It is shown that malakhovite is not only chemical but also crystal chemical anthropogenic analogue of khesinite (Ca₄Mg₂Fe\(_{{10}}^{{3 + }}\)O₄Fe\(_{{10}}^{{3 + }}\)Si₂O₃₆). The relationships between the malakhovite and the minerals from the dorrite–khesinite series of the rhönite group in the sapphirine supergroup are discussed.

中文翻译：

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车里雅宾斯克煤盆地（南乌拉尔）的人为焚烧垃圾场中的钾钠锰矿的人为类似物“ Malakhovite”的晶体化学

摘要

“malakhovite”（一个人为从里雅宾斯克煤盆地的烧焦转储硅-氧化物的单晶; SP克。。P \（\巴{1} \） ，一个= 10.555（4），b = 10.928（3）埃，ç = 9.059（3）埃，α= 106.338（12）°，β= 95.87（7）°，γ= 124.40（2）°，V = 781.0（5）³，ž = 1，- [R ₁ =通过电子探针显微分析，拉曼光谱和X射线衍射分析研究了0.0378，该矿物的理想配方为Ca ₄（Fe \（_ {{{8.56}} ^ {{3 +}} \） Mg _1.72 Ca _0.82 Fe \（_ {{0.55}} ^ {{{2 +}} \）的Mn _0.22的Ti _0.13）_Σ12.00（FE \（_ {{6.48}} ^ {{3 +}} \）的Al _2.82的Si _2.71）_Σ12.01 Ö ₄₀。结果表明，孔雀石不仅是化学的，而且是晶体化学的人为类似的钾钠锰矿（Ca ₄ Mg ₂ Fe \（_ {{10}} ^ {{3 +}} \） O ₄ Fe \（_ {{10} } ^ {{{3 +}} \） Si ₂ O ₃₆）。讨论了蓝宝石超群中菱锰矿中菱锰矿-水钠锰矿系列中的矿物与孔雀石矿物之间的关系。