Cordierite Gneiss Slabs: Working Iolite-Bearing Stone
Cordierite gneiss on the shop floor: iolite pleochroism, Mohs 7-7.5 porphyroblasts, pinite soft spots, banding and cut direction, polishing and sealing.
Dynamic Stone Tools |
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Cordierite gneiss on the shop floor: iolite pleochroism, Mohs 7-7.5 porphyroblasts, pinite soft spots, banding and cut direction, polishing and sealing.
Dynamic Stone Tools |