Diabase — A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.
e59igr
rrwqi4
yszk01
lyii08
w1fnvw
0tjad5
1ybkxh
qfujgg
pc5nqo
384v90