"WardsSci000444"

Blue fluorapatite, pure crystalline, Moh's hardness of 5.

Yellow to orange crystal with a glassy luster and smooth, often transparent appearance.

Small to moderate sized crystals within a mafic matrix and cleavage visible in some specimens.

Feldspar group; calcium end member plagioclase crystals in pyroxene matrix.

Feldspar group; greenish gray alkali feldspar, coarse crystalline, some iridescence.

Classic “peacock” aluminum ore.

Cut black mica cleavage sheets.

Clear, euhedral points and sections.

White, fibrous, silky luster.

Deep blue, massive, with nepheline; key feldspathoid.