rocks pumice, rocks obsidian, rocks perlite, rocks porphyritic.
kimberlites basaltic lan kimberlites micaceous
ngandhut asam ing alam, kasedhiya ing persil saka werna
tansah ditemokake minangka pipo vulkanik liwat lemah ndhuwur Continental jero, tuan rumah rock kanggo diamond, iku salah siji saka rock tuwa, lumahan asring mengilap