Whakaahuatanga: Ko te kōhatu puia e mōhiotia whānuitia ana ko te pumice, ko te pore basalt rānei, he momo rauemi whai hua, he mea hoki mō te taiao. He maha ngā kohuke me ngā huānga iti kei roto, pērā i te konutai, te konupora, te konumohe, te silicon, te konupūmā, te titanium, te manganese, te rino, te nickel, te cobalt me ​​te molybdenum me ētahi atu.

Te Whakamahinga: te hanga, te tiaki wai, te huri, te rauemi tātari, te waro tunutunu, te hoahoa whenua, te whakatipu kore oneone, ngā hua whakapaipai me ētahi atu mara.

Tae: whero, pango. mā
rahi: 3-6mm, 6-8mm, 8-10mm, 1-3cm, 3-6cm, 6-8cm, 8-10cm, 10-50cm ka taea te whakarite. momo: kōhatu, matūriki, paura.