please tell me what it's used for
I received it from the rock monsters ^^

u can use it as a compound material...
example for hard aluminium plate..
u can use "Aluminium Ore + Basalt"
the result will be Alu Sand,Alu Block,Alu Plate and Hard Alu Plate
^-^
u can also compound juice using it...Fruit+Basalt...
but u dont need so high rank ore for juice...juz use copper ore,coal ore or iron ore...or even saltpeter^-^

thank you ^^
oh okay
I never saw it before
=p
so I thought it was something rare
because the rank says; 7 O:
but anyways thank you ^^
<3

its not really usefull im selling it to nps coz per stack it 350g and easy to get from stone monsters