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They are rocks formed from lava at or near the surface. Basalt is a typical fine-grained extrusive igneous rock, composed of mineral crystals that require magnification to see. The fine-grained texture is due to rapid solidification of the lava which leaves little time for large mineral crystal formation.
What else can I help you with?
Are large grains easily seen as fine grained?
Large grains are easier to see than fine grains.
How are rocks with grains classified?
They are eather fine grain or course grain. Granite are course Grain, Basalts are fine grains.
What is coarse grain in metals?
Fine grains are harder than coarse grains
What does the sand feel like in the Sahara?
Varies between fine and extremely fine grains
How do fine- grained rock form?
Fine grains usually form due to rapid cooling
Rough texture rocks have grains and fine textured rocks have grains?
Yes m that it true, other than glasses all rocks have grains.
When all the grains in a rock are microscopic it is described as what?
fine-grained
Rocks that have large grains you can easily see are described as fine grained true or false?
False. Rocks with large grains that are easily seen are described as coarse-grained, not fine-grained. Fine-grained rocks have smaller grains that are not easily visible to the naked eye.
Is Lime Stone coarse grained or fine grained?
it is fine grained because the grains that make it up are to small to see
Are grains in fine grained rocks easy to see?
No, grains in fine-grained rocks are too small to be easily seen with the naked eye. These rocks have a smooth texture due to the small size of the mineral grains, which are typically less than 0.1 millimeter in size. They often feel smooth to the touch and may appear uniform in color.
What are fine grains of rocks?
Coarse is intrusive: the magma cooled slowly when it was formed causing big crystals... Fine is extrusive: the magma cooled quickly when it was formed causing small crystals!! your welcome mrs. bergs class:)
Do lava rocks usually have large grains?
Lava rocks typically have fine to medium-sized grains due to their rapid cooling process when formed from molten lava. Large grains are less common in lava rocks than in other types of igneous rocks that cool more slowly beneath the Earth's surface.
