| AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from Connecticut > Cordierite var. Iolite |
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| DESCRIPTION: | No. 81336 |
| Mineral: | Cordierite var. Iolite |
| Locality: | Route 9 road cut at Beaver Meadow Road, Haddam, Middlesex County, Connecticut |
| Description: | Lustrous iolite crystals, the transparent blue gem variety of the mineral cordierite, to 20 mm frozen in gray quartz-feldspar. The prism faces of the iolite crystals show alteration to green-brown pinite. The blue color is most visible on the rear. Ex. S. Kelland collection; ex. Alvin Fogg (1908-1994) collection (Poughkeepsie, NY) |
| Overall Size: | 6x4x3 cm |
| Crystals: | 5-20 mm |
| Archived: | For reference only |
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