Were does an igneos rock start off?

Answer 1

it is from the magma solidifieing under ground when there is an eruption it can also happen when the volcano is overflowing. whaty happens is that the magma cools the little crystals and bits of rock which makes them interlocking and a solid rock

Answer 2

Technically speaking, an igneous rock can start off anywhere. Looking at the rock cycle, any rock, be it metamorphic, sedimentary, or even igneous, can become an igneous rock through melting and re-cooling. I think what you're looking for, though, is somewhat less specific. Igneous rocks, by definition, form when magma, or molten rock, cools to a solid. Magma is liquefied rock found beneath Earth's surface. As it cools, the dissolved gases and tiny crystals within it grow in size. Everything within an igneous rock (crystal size, etc.) depends on how quickly or slowly the magma cools. Longer cooling equals bigger crystals, while a shorter cooling period creates very small, sometimes microscopic crystals.