tektur
aphanitic kanggo porphyritic
amorf, glassy
werna
bluish - werna abu-abu, coklat, grey, cahya kanggo werna abu-abu peteng
ireng, coklat, coklat peteng, grey, cahya kanggo werna abu-abu peteng
pangopènan
kurang
kurang
kekiatan
awet
awet
banyu tahan
✔
✘
✔
✘
ngeruk tahan
✔
✘
✔
✘
rereged tahan
✔
✘
✔
✘
angin tahan
✔
✘
✔
✘
asam tahan
✔
✘
✔
✘
katon
vesicular
veined utawa pebbled