Astrophyllite is NOT a mica but is an inosilicate, which can resemble mica plates in hand specimen, as is the case and with most of the Astrophyllite. Astrophyllite has a perfect cleavage, can be split like a mica in thin sheets, but is very brittle (Ency. of Minerals). The color is much like a mica also being a bronze to orange yellow. Usually found in pegmatites of nepheline syenites, alkaline granites of MSH and Magnet Cove (typical for titanium minerals). Finest crystals come from Khibiny massif (Bernard & Jaroslav).
A nice specimen with long bronze plates of Astrophyllite to 2.5cm and a large crystal of Aenigmatite to 4.5cm.
