|Volcanic ____ is the product of rapidly cooling lava.
|The molten rock below the Earth's surface is called ____.
|Minerals of sedimentary rocks came from the ____ of other rocks.
|The molten rock expelled by a volcano is called ____.
|Carbon, copper, silver, and sulfur are single ____ minerals.
|The ____ of a mineral can be dull, glassy, or brilliant.
|Quartzite is a rock, whereas quartz (silicon dioxide) is a ____.
|The tendency of a mineral to split along a flat surface is ____.