Kufotokozera: Mwala wophulika womwe umadziwika kuti pumice mwala, mwala wa basalt, kapena miyala ya lava, ndi mtundu wazinthu zogwirira ntchito komanso zachilengedwe.Lili ndi mchere wambiri komanso ma microelements, monga sodium, magnesium, aluminium, silicon, calcium, titaniyamu, manganese, chitsulo, faifi tambala, cobalt ndi molybdenum ndi zina zotero. .

Chiphala mwala Kukula: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm akhoza makonda.
Chiphalaphalamwalamtundu: wofiira, wakuda.
ChiphalaphalamwalaMtundu: mtanda, tinthu, ufa, pepala