tschermakite

pyroxene molecule

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July 23, 2026

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Tschermakite is a component of the pyroxene mineral group, which are significant rock-forming silicates. Pyroxenes have a general chemical formula of XYZ₂O₆ and are characterized by their two cleavage planes intersecting at approximately 87° and 93°. The specific composition of Tschermakite involves the substitution of aluminum for magnesium and silicon in the pyroxene structure, with the ideal formula MgAlSiAlO₆. Pyroxenes are found in various igneous and metamorphic rocks and are known for their high-temperature formation conditions. Tschermigite, on the other hand, is a distinct mineral that is a form of alum.12

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pyroxene
Chemical composition
^… for Si⁴⁺ yields the ideal tschermakite component MgAlSiAlO₆.
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^… for Si⁴⁺ yields the ideal tschermakite component MgAlSiAlO₆.
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hornblende
…as follows: hornblende, Ca₂(Mg₄Al) (Si₇Al); tschermakite, Ca₂(Mg₃Al₂)(Si₆Al₂); edenite, NaCa₂(Mg)₅(Si₇Al); pargasite, NaCa₂ (Mg₄Al)(Si₆Al₂). Extensive solid solution occurs, and each end-member has iron-rich equivalents; minor elements, including manganese, titanium, chromium, potassium, fluorine, and yttrium, are
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…as follows: hornblende, Ca₂(Mg₄Al) (Si₇Al); tschermakite, Ca₂(Mg₃Al₂)(Si₆Al₂); edenite, NaCa₂(Mg)₅(Si₇Al); pargasite, NaCa₂ (Mg₄Al)(Si₆Al₂). Extensive solid solution occurs, and each end-member has iron-rich equivalents; minor elements, including manganese, titanium, chromium, potassium, fluorine, and yttrium, are
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