Pyrophyllite – WGNHS – UW–Madison
Pyrophyllite is a micaceous mineral formed as a result of the relatively low grade metamorphism of aluminum-rich rocks. It can also form as a hydrothermal replacement of aluminous minerals such as feldspars. The mineral may be in fine-grained aggregate and is easily mistaken for other phyllosilicates. DODGE COUNTY: Pyrophyllite is a component …
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