A light, coarse stone of volcanic origin, which consists of silicate of aluminum, sodium and potassium.
Classification: Pumice, except crude or crushed, whether or not heat-treated
NSN 6220-01-029-8605
NSN 5960-01-137-2329
NSN 6685-00-088-1548
NSN 5996-01-632-8592
NSN 5835-01-346-9575
NSN 6105-00-054-9397
NSN 5965-01-132-4018
NSN 6105-01-650-9489
NSN 6110-01-311-2292
NSN 6320-00-456-2092
NSN 6145-01-269-6099
NSN 5835-00-143-4153