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Title: Porphyritic andesite
Item Name: Rocks


Example of porphyritic andesite (an igneous rock typically found in lava flows), collected by Hull Geological Society from Holderness beaches. Purple colour, with pink/grey inclusions.

Materials: andesite
Measurements: L:4.8cm; W: 4cm
ID_Number: ERYMS (BAG) : 2019.11.8