- PAS-18
- Sillimanite
- Yantic Falls, Norwich, New London Co., Connecticut, USA
- Cabinet, 11.4 x 6.2 x 4.6 cm
- Ex. Philadelphia Academy of Natural Sciences
- SOLD
Flatlaying, lustrous crystals of sillimanite (to 3 cm) embedded in schist matrix, a rich specimen from a historic old locality.