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Obsidian when knapped would have the sharpest cutting tool edge of any igneous rock.

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15y ago

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Do use igneous rocks for tools?

Yes. Obsidian in particular has been used to make tips for arrows and spears.


Why have people throughout history used igneous rocks for tools and building materials?

Igneous rocks are durable and resistant to weathering, making them ideal for tool making and construction. Their hardness and strength also make them suitable for grinding tools and creating sharp edges. Additionally, the abundance of igneous rocks in many regions meant they were readily available for use by ancient civilizations.


What do you use Igneous rocks for?

igneous rocks are used for blilding and for long lasting moument.


Do people use igneous rocks for tools?

Yes. Obsidian in particular has been used to make tips for arrows and spears.


What characteristics make igneous rocks useful?

Igneous rocks are useful because they provide information about Earth's history, such as how they were formed and the conditions of their formation. They also contain valuable resources like metals and minerals. Additionally, igneous rocks are used in construction materials and as decorative stones.


What is extrusive igneous rocks used for?

Extrusive igneous rocks i think are used for carving and awesome things like that!


Why might the Incas have chosen igneous rock to build their fortress near Ollantaytambo in Peru?

Many igneous rocks are hard, dense, and durable. People throughout history have used igneous rock for tools and building materials.


Why might incas have chosen igneous rock to build their fortress near Ollantaytambo in Peru?

Many igneous rocks are hard, dense, and durable. People throughout history have used igneous rock for tools and building materials.


Why are igneous rocks useful?

Igneous rocks are important to science because scientist need to know about all the different types of things in our world today. The reason also because igneous rocks come from volvanoe and the stuff that comes out of a volcanoe is called LAVA /MAGma!


When molten rocks cools what rocks form?

igneous rocks


What is the main type of energy used to help convent metamorphic rocks into igneous rocks in the rock cycle?

The main type of energy used to convert metamorphic rocks into igneous rocks in the rock cycle is heat. The increase in temperature causes the metamorphic rocks to melt and then solidify into igneous rocks.


How did the roman manufacture quern stones?

The Romans made quern stones by shaping them and smoothing them with metal hand tools. They used igneous rocks - rocks is formed through the cooling and solidification of magma or lava. Basalt was the favourite one. When igneous rock was not available, sandstone, quartzite or limestone was used.