Flörkeite, Willhendersonite, Thomsonite Subgroup
Feuerberg, Hohenfels-Essingen, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
Flörkeite are the bigger spherical aggregates that look almost clear, Willhendersonite are the smaller white spherical aggregates and Thomsonite are the tiny clear spherical aggregates with smooth surface.
Flörkeite: EDX: 1.1% Na, 26.8% Al, 51.5% Si, 12.5% K, 8.2% Ca; also verified by XRD
Willhendersonite: EDX: 10% K, 14% Ca, 36% Al, 40% Si
© Günter Frenz