0
Is it true For molten rock to be considered a magma it must be intrusive and silicate in composition?
Wiki User
∙ 14y ago
No.
Magma is simply the name for molten rock that has not yet been erupted; after eruption it is known as lava.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What is an intrusive igneous rock which is crushed into sand?
molten rock
How do silicate minerals form?
Most silicate minerals are formed when molten rock cools at either the earths surface, or deep underground.
What type of crystal gain that forms when molten rocks cool slowly?
Intrusive
What is molten rock found beneath the earth27s surface?
intrusive igneous rock
Is glassy igneous rocks intrusive or extrusive?
Granite gneiss is a metamorphic rock and would not be considered extrusive (rock formed from molten material at or near the surface).
What is a reason that molten rock at the surface is different in composition from molten rock underground?
Magma is a combination of molten silicate minerals and volatiles (gases) and Lava loses many of these volatiles (gases) when it comes in contact with the atmosphere; hence each has a different chemical composition. This is true. Also, temperature and pressure conditions differ from the surface to underground, so different crystals (that make up the magma and lava) will form. Furthermore, the composition of the magma (below ground) may be different to the lava (above ground), so the resultant rocks may have differing chemical compounds composing them.
Composition of asthenosphere?
semi molten condition
What is Uranus' composition of interior?
Molten rock
What does it mean when silicates polymerize?
Silicate is molten rock when it polymerizes it forms chains. the silicate melt does not have a single, clear cut freezing point like ice.
What of rocks form when magma cools below earths surface?
Intrusive igneous rocks
What forms when molten rock within earth or on earth's surface?
Intrusive or extrusive igneous rocks
How is gabbro similar to granite?
The rock is intrusive igneous rock.it is intrusive equivalent of basalt.gabbro is mafic in composition,thus is composed of dark minerals .e.g.olivin,pyroxene,amphiboles and ca+2 -rich plagioclase feldspar.The rock form through intrusion of magma below the earth surface.
