Granite
No. Basalt generally has small crystals.
Basalt is a rock, not a mineral, and therefore does not have a crystal structure of it's own.
Gabbro has much larger grains that basalt does. This is because basalt cools faster than gabbro and has less time to form crystals.
Granite is a phaneritic rock. Phaneritic rocks are coarse-grained, and they have visible crystals. Other phaneritic rocks include diorite, gabbro, and periodite. These rocks are also intrusive because they cool slowly.
no
basalt
very compact,crystal grains interlocked
Granite
Since basalt is extrusive it cools quickly and forms small crystals.
No. Basalt generally has small crystals.
It is Gabbro
small
The seafloor spreads apart, creating new rocks that record magnetic orientation. Small grains of magnetite on the volcanic basalt (ocean floor) have magnetic properties.
The seafloor spreads apart, creating new rocks that record magnetic orientation. Small grains of magnetite on the volcanic basalt (ocean floor) have magnetic properties.
Basalt is a rock, not a mineral, and therefore does not have a crystal structure of it's own.
Yes. The grain texture also matters. For example, basalt and gabbro have the same mineral composition, but basalt, which forms on the surface, has microscopic grains while gabbro, which forms underground, has larger mineral grains.