0
What type of crystal texture is formed when magma cools slowly within warm rock underground?
Wiki User
∙ 12y ago
As magma cools slowly, large coarse crystals form. This is described as a phaneritic texture.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoCoarse crystal grain.
Add your answer:
Earn +20 pts
How would you describe the texture of an igneous rock that formed extremely slowly underground?
pegmatitic
How would you best describe the texture of an igneous rock that formed extremely slowly underground?
Coarse
Large crystals with well-formed crystal faces tend to form when?
Large mineral crystals can form when magma is able to cool slowly underground, creating intrusive igneous rock.
What does mineral crystal size tell about how rock formed?
The size of the crystal relates to how long the crystals were forming. For example crystals that cooled slowly are larger than those cooling faster.
How are amethysts formed?
I think like granite, amethysts are formed from magma deep underground. This helps them to cool slowly forming the large crystals they have.
How would you describe the texture of an igneous rock that formed extremely slowly underground?
pegmatitic
What type of crystal grain is formed when molten rock cools slowly?
Large crystals with a coarse crystal grain texture.
How would you best describe the texture of an igneous rock that formed extremely slowly underground?
Coarse
What is the name of the crystal grain that is formed when molten rock cools slowly?
The texture of the rock product of slow cooling magma is referred to as coarse grained.
Rock formed when magma cools slowly?
crystal
Large crystals with well-formed crystal faces tend to form when?
Large mineral crystals can form when magma is able to cool slowly underground, creating intrusive igneous rock.
What is a type of crystal grain which is formed when molten rock cools slowly?
It is mineral
Which will be bigger if one crystal is above and grows quickly and cools slowly and the one underground grows slowly in the warm?
If the crystal grows quickly then it is going to be the quicker one to grow, and thus larger, though not always the most valuable since underground crystals can take millions of years to come to be.
What is formed when a magma chamber cools slowly and hardens underground?
rock because when the lava or magma cools slowly it starts to harden.
What do the size shape and position of the grains that make up a rock determine?
If the grains of the rock are larger, then it either is an intrusive igneous rock,( a rock formed from molten rock that cooled slowly over long periods of time underground) or a sedimentary rock that was formed from large sediments.
What is the crystal size when magma cools entirely underground?
Cooled slowly underground the pseudo crystals of columnar basalt, such as the Giants Causeway in Ireland may be in a metre size range.
How is the texture of an igneous rock used to identify the conditions under which the rock formed?
The three main categories of igneous rock texture are aphanitic, phaneritic, and porphyritic. Aphanitic texture is described as a crystalline igneous structure that is too small to be seen with the naked eye. This texture indicates that the rock was cooled at or near the surface, quickly, with little time for crystal growth. Phaneritic texture is described as a rock with a visible crystalline structure, indicating that the rock was cooled slowly from magma underground, allowing ample time for crystal growth. Porphyritic texture is the presence of larger, visible phenocrysts suspended in a larger aphanitic matrix. This indicates a two-stage cooling process, where some minerals developed slowly underground in magma which was then erupted on the surface, causing the remaining minerals to form quickly.
