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 6130-00-709-0765
NSN 5925-01-166-7562
NSN 6320-01-195-5583
NSN 5935-01-559-8227
NSN 6685-01-264-8011
NSN 6645-01-373-2262
NSN 6610-01-151-7669
NSN 5925-01-018-6845
NSN 2925-01-087-1677
NSN 5935-01-600-0828
NSN 5935-00-776-7210
NSN 2925-01-391-9247