Cordierite Var. Iolite
Haddam, Middlesex Co., Connecticut, USA
Small Cabinet, 8.6 x 6.4 x 3.7 cm
Ex. Philadelphia Academy of Natural Sciences
This is a historic, important US locality. I have not, however, seen a display-worthy specimen of cordierite from here before. This specimen is typical to my eye of Newfoundland material for color, a shimmering iridescence, and composed of micaceous crystal plates layered one against the other.