Ibisobanuro: Ibuye ryibirunga bakunze kwita ibuye rya pumice, ibuye rya basalt, cyangwa urutare rwa lava, ni ubwoko bwibikoresho bikora nibidukikije.Harimo imyunyu ngugu na microelements nyinshi, nka sodium, magnesium, aluminium, silikoni, calcium, titanium, manganese, fer, nikel, cobalt na molybdenum nibindi.bikaba bikoreshwa cyane mubusitani, hasi, urukuta, ibihingwa, inganda za acqurium .

Ibuye ry'ibirunga Ingano: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm irashobora gutegurwa.
Ikirungaibuyeibara: umutuku, umukara.
IkirungaibuyeImiterere: ibibyimba, ibice, ifu, urupapuro