L Lee New member Sep 24, 2009 #1 how can anthracite be changed into bituminous coal? how can feldspar be chaged into basalt? i am stuck on these. i"ve answered the other questions but these two are killing me,
how can anthracite be changed into bituminous coal? how can feldspar be chaged into basalt? i am stuck on these. i"ve answered the other questions but these two are killing me,
