Ibisobanuro: Ibuye ryibirunga bakunze kwita pumice cyangwa basalt basalt, ni ubwoko bwibikorwa nibidukikije.Irimo imyunyu ngugu myinshi na microelements, nka sodium, magnesium, aluminium, silikoni, calcium, titanium, manganese, fer, nikel, cobalt na molybdenum n'ibindi.

Imikoreshereze: ubwubatsi, kubungabunga amazi, gusya, gushungura ibikoresho, barbecuecarbon, ubwubatsi nyaburanga, guhinga ubutaka, guhinga imitako nindi mirima.

Ibara: umutuku, umukara.umweru
ubunini: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm birashobora gutegurwa.uburyo: ibuye, ibice, ifu.