At the cores of the aegirine spherulites there typically are inclusions of cubic crystals of villiaumite to 3 cm on edge. |
The intermediate zone consists of massive lilac-gray sodalite with inclusions of nepheline, dark green aegirine, and pale green fluorapatite. |
A few quartz specimens have included yellow to dull orange acicular crystals, identified by quantitative analysis as aegirine. |
Quartz is associated most commonly with aegirine and potassium feldspar as well as zircon. |
This mineral always shows some degree of alteration to either aegirine or diopside. |
The aegirine was associated with aesthetic smoky quartz, microcline, and zircon. |