7.1 x 6.0 x 4.1 cm. Sharp, brown-green augite crystals to 6 mm are nicely set across the top, with a few more on the face of the intensely vesicular, lightweight basalt matrix on this rare and old-time specimen from the Azores. Augite is very rare from Faial Island. ID as listed on the accompanying museum label. Ex. Nuttall and Philadelphia ...
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