The holes represent the bubbles of trapped and expanding gas that was present in the solidifying lava. They were essentially frozen in place.
Old, cool igneous rock sinks.
because most intrusive igneous rock are found underground and diorite is found under the earth.
Intrusive igneous rock
A rock is considered igneous if it formed directly from the cooling of molten rock.
== == Quartz is actually a silicate mineral that appears in metamorphic, sedimentary, and igneous rocks.
pumice
When it has holes and small rocks inside the rock
An igneous rock can contain small holes called vesicles, which are formed by gas bubbles trapped in the rock during its cooling process. These vesicles can vary in size and density depending on the type of igneous rock and the amount of gas released during solidification.
Gas bubbles get trapped in the magma or lava as it cools, forming holes in the igneous rock. These holes are often filled with minerals, such as quartz or calcite, creating geodes or nodules.
Pumice is such a rock.
The volcanic rock can be classified as basalt. Basalt is a fine-grained igneous rock that forms from the solidification of lava flows. The smooth texture and small holes, known as vesicles, are characteristic features of basalt.
Holes in igneous rocks are typically formed by gas bubbles getting trapped in the molten rock as it cools and solidifies. These trapped gas bubbles then escape as the rock solidifies, leaving behind cavities or holes.
That is a type of rock called pumice.
I'd say pumice is the closest to your description.
The rock comes from a volcano and is known as pumice.
Igneous rock is formed.
Obsidian is an igneous rock.