Is Wollastonite a Pyroxene?
Wollastonite Was Once Classed Structurally Among the Pyroxene Group, Because Both of These Groups Have a Ratio of Si: O. .. . in 1931, Warren and Biscoe Showed...
Wollastonite was once classed structurally among the pyroxene group, because both of these groups have a ratio of Si:O. ... In 1931, Warren and Biscoe showed that the crystal structure of wollastonite differs from minerals of the pyroxene group, and they classified this mineral within a group known as the pyroxenoids.
Why is wollastonite not pyroxene?
CaSiO3 is the chemical formula for wollastonite, but wollastonite does not have a pyroxene structure. There is complete Mg-Fe solid solution between the pyroxenes, and as with most Mg-Fe solid solutions, the Mg-rich end members crystallize at higher temperatures than the Fe-rich end members.
What type of rock is wollastonite?
Wollastonite - CaSiO
Wollastonite is a calcium inosilicate mineral. It forms when impure limestone or dolostone is subjected to high temperature and pressure sometimes in the presence of silica-bearing fluids as in skarns or contact metamorphic rocks.
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