Sharaxaad: Dhagaxa foolkaanaha oo loo yaqaan dhagaxa pumice, dhagaxa basalt, ama dhagaxa lava, waa nooc ka mid ah walxaha shaqeynaya iyo kuwa deegaanka. Waxa uu ka kooban yahay daraasiin macdan iyo walxo yaryar, sida sodium, magnesium, aluminium, silicon, calcium, titanium, manganese, bir, nikkel, cobalt iyo molybdenum iyo wixii la mid ah. Kuwaas oo si ballaaran loogu isticmaalo beeraha, sagxadda, derbiga, dhirta, warshadaha acqurium.

Dhagaxa foolkaanaha Cabbirka: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm waa la habeyn karaa.
Foolkaaniyodhagaxmidab: casaan, madow.
FoolkaaniyodhagaxQaabka: buro, walxo, budo, xaashi