It may contain crystals, but these might be embedded while in the amorphous matrix of the pumice — its correct make-up is dependent upon the nature of its source magma. Alternatively, pumice is regarded as being a mineraloid or simply a style of volcanic glass. Sand dry speedy and will https://bookmarkassist.com/story18532058/the-smart-trick-of-pumice-stone-that-no-one-is-discussing