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Obsidian is an igneous rock that technically is not composed of minerals. It is a natural glass.

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15y ago

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Can igneous rock often be identified by their minerals?

Yes, igneous rocks can often be identified by their minerals because the minerals present in an igneous rock are usually specific to the conditions under which the rock formed. By studying the mineral composition of an igneous rock, geologists can determine factors such as the rock's cooling rate, temperature, and pressure during formation.


Is a igneous rock a mineral or rock?

You say it as ' Igneous ROCK ' and ask whether it is a rock..


Can igneous rock be identified by other minerals?

no


Any group of hard rock forming minerals principal constituent of igneous rocks?

feldspar


What kind of rock is formed when melted minerals cool and harden?

Igneous rock is formed when melted minerals cool and harden. This process can happen either beneath the Earth's surface (intrusive igneous rock) or on the surface (extrusive igneous rock). Examples of igneous rocks include granite, basalt, and obsidian.


Basaltic magma forms what kind of igneous rock?

Mafic igneous rock. ( due to Ferromagnesian minerals).


Is igneous rock made out of minerals?

No it is not. Sedimentary rocks are made of minerals.


Which rock is formed from melted minerals?

Igneous rock is formed from melted minerals that have solidified and cooled. This process can occur either beneath the Earth's surface, forming intrusive igneous rocks, or on the surface, leading to extrusive igneous rocks.


Does igneous rock forms from minerals?

of course :P


What minerals does Iowa make use of?

igneous rock


What type of rock forms from a melt by crystallization?

igneous rocks- rocks that are formed from melted minerals. ore-a rock that has a large amount of minerals.


How are the sedimentary rock the metamorphic rock and the igneous rock the same?

They all contain minerals.