Fluorapatite, Albite
Pedras Altas claim, Pedras Altas, Capim Grosso, Bahia, Brazil
3.3 x 2.8 x 2.7 cm
This is a somewhat atypical specimen for the locality as the fluorapatite crystal is notably tabular in habit, and nearly every other crystal I've seen has been prismatic. It has a soft grayish-blue color in the center that grades into a colorless hue around the periphery with sharp, well-formed faces and decent translucency ...
© Brian Kosnar - Mineral Classics