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Which one of these is an igneous rock is it gabbro obsidian peridotite or chert?
Wiki User
∙ 11y ago
They are all igneous, except chert
Wiki User
∙ 11y ago
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What rock would make a spear point in prehistoric time?
Chert, flint, or obsidian were the materials normally used.
Are arrowheads made from sedimentary rocks?
Arrowheads can be made of metal, bone, chert and flint (sedimentary rocks), or obsidian (volcanic glass).
Is silica intrusive igneous igneous rocks?
Silica is a mineral occurring alone as quartz, flint & chert and some semi-precious stones; but it is a primary constituent of all igneous rocks irrespective of mode of formation & deposition.
What is the color of chert?
Chert has no streak, it is too hard.
What is the difference between chalcedony and chert?
Chert is generally darker, and less pure.
What are examples of igneous metamorphic and sedimentary rocks?
Igneous: * Obsidian * Granite * Diorite * Gabbro * Pumice * Basalt Metamorphic: * Slate * Phyllite * Gneiss * Mica schist * Marble * Quartzite * Granulite Sedimentary: * Limestone * Sandstone * Shale * Chert * Mudstone * Chalk
What type of rock is chert?
Chert is one of the major types of sedimentary rocks.
What kinds of rocks did Indians use for arrow heads?
A popular mineral that is used to make arrowheads is flint. Arrowheads may also be made by using metal razorblades.
What rock would make a spear point in prehistoric time?
Chert, flint, or obsidian were the materials normally used.
Information about rocks?
There are three times of rocks. Sedimentary rocks are compressed soil, sand, and other earth components. Igneous rocks were formed by the chemical processes of the formation of the earth. Some rocks are part of the earth's mantle.
Are arrowheads made from sedimentary rocks?
Arrowheads can be made of metal, bone, chert and flint (sedimentary rocks), or obsidian (volcanic glass).
Which rock would be harder to break with a hammer a sedimentary rock or an igneous rock?
You would normally think that an igneous rock would be harder to break. However, it completely depends on which igneous rock is being compared to which sedimentary rock, as their resistance to breakage is so varied. There are some igneous rocks (obsidian and pumice, for example) that would break much easier than some sedimentary rocks, such as chert or flint.
Is silica intrusive igneous igneous rocks?
Silica is a mineral occurring alone as quartz, flint & chert and some semi-precious stones; but it is a primary constituent of all igneous rocks irrespective of mode of formation & deposition.
Volcanic rocks that can be used for mirrors jewelry knives?
Dont know about the mirror part, but obsidian, flint, chert, jasmine are all knife materials. Anything can be used as jewelry
Different kinds of rocks?
1. Igneous Rock - produced by solidification of molten magma from the mantle or from molten crust. Magma that solidifies at the Earth's surface conceives extrusive or volcanic igneous rocks. When magma cools and solidifies beneath the surface of the Earth intrusive or plutonic igneous rocks are formed.Examples: granite, basalt, gabbro, obsidian, pumice.2. Sedimentary Rock - formed by burial, compression, and chemical cementation of deposited weathered rock debris or sediments from the Earth's surface. They can also be formed by the precipitation of minerals from saturated solutions, such as is rock salt.Examples: shale, sandstone, gypsum, limestone, chert, coal.3. Metamorphic Rock - created when existing rock is chemically or physically modified by intense heat or pressure.Examples: quartzite, slate, marble, granulite, schist.
Is chert metamorphic sedimentary or igneous?
Brick is baked mud, and as such, can be considered to be sedimentary.
What kind of rock is used to make arrowhead?
Arrowheads made of basalt, jasper, flint, obsidian, quartz and chert have been found. Occasionally, wooden and bone arrowheads have been seen. You should not collect these from any public lands since it is illegal. That is because once you have removed the arrowhead, its history becomes moot for study.
