Extrusive igneous rock: Obsidian. Quality of conchoidal fracture making them easily workable to a sharp edge for cutting tools or weapon points. Intrusive igneous rock: Granite. Quality of durability due to high crystalline quartz and feldspar mineral mix. Also beauty. Harder to work, but a great, long lasting building stone.
You have to specify which igneous rock, because igneous rocks such as Pumice and Granite have very different properties, but both are useful in their own ways. In general, igneous rocks are relatively hard and inelastic compared to sedimentary rocks but that is by no means always the case. Quartz crystals, found in both igneous and sedimentary rocks, are very hard and durable and have many uses. Some igneous rocks are very brittle and have no use as tools or as building materials. Be more specific.
Most are brittle and can be shaped into sharp blades. Obsidian is a good example.
for th ponys can die
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!
Obsidian when knapped would have the sharpest cutting tool edge of any igneous rock.
Many igneous rocks are hard, dense, and durable. People throughout history have used igneous rock for tools and building materials.
Because they are so hard, Igneous rocks make useful road building materials. When sheets of igneous rock are cut and polished, they are used inside buildings such as banks and offices, and are also used as gravestones. There are different types of igneous rock, therefore each type has its own uses e.g: Granite: Used for long lasting monuments, for trim and decoration on buildings. Pumice: Because they are so light, it is used quite often as a decorative landscape stone. If grounded to a powder, it is used as an abrasive in polish compounds and in Lava soap. Crystalline Igneous rocks can be used for jewelery and other similar things.
People have used igneous rock for tools because of its strength and workability; for building materials due to its beauty, strength and availability.
Many igneous rocks are hard, dense, and durable. This makes them great for tools and building materials.
there are several uses of igneous rocks includingpumice being used as an abrasives in industrial hand cleaners or for sanding materialsobsidian being used in the same way as flint where it can be napped into arrow heads and blades and more recently used in high end scalpels
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!
Extrusive igneous rock: Obsidian. Quality of conchoidal fracture making them easily workable to a sharp edge for cutting tools or weapon points. Intrusive igneous rock: Granite. Quality of durability due to high crystalline quartz and feldspar mineral mix. Also beauty. Harder to work, but a great, long lasting building stone.
Obsidian when knapped would have the sharpest cutting tool edge of any igneous rock.
They used sticks and rocks to make useful tools.
People have used igneous rock for tools because of its strength and workability; for building materials due to its beauty, strength and availability.
Yes. Obsidian in particular has been used to make tips for arrows and spears.
Yes. Obsidian in particular has been used to make tips for arrows and spears.
Many igneous rocks are hard, dense, and durable. People throughout history have used igneous rock for tools and building materials.
Many igneous rocks are hard, dense, and durable. People throughout history have used igneous rock for tools and building materials.
Rocks are useful because without them, we wouldn't exist. They make tools, games, ect. (I'm sure you can find a more in-def answer, I just answered this because it HAD no answer. Feel free to edit.)