|A metamorphic rock derived from shale is ____.
|A metamorphic rock derived from sandstone is ____.
|Peat is converted to lignite, then ____ coal, and then anthracite.
|A common igneous rock in the ____ crust is basalt.
|The mineral form of sodium chloride (table salt) is ____.
|A hard coal that has a high luster and burns cleanly is ____.
|Cooled lava and magma ____ to form igneous rocks.
|Synthetic cubic ____ (ZrO2) looks like diamond.