Is it possible for two igneous rocks to have the same mineral composition but be classified by different names Support your answer with an example?
An igneous rock is classified on the basis of its mineral composition and the size of its mineral crystals. A rock formed from magma can have the same composition as a rock formed from lava. The rocks though will have different names because the sizes of their crystals will be very different.
Is it possible for two igneous rocks to have the same mineral composition but be different rocks provide proof for your answer?
Yes, it is possible for two igneous rocks to have the same mineral composition but be different rocks.
Is it possible for two igneous rocks to have the same mineral composition but be different rocks Support your answer with an example quizlet?
Is it possible for 2 igneous rocks to have the same mineral composition but be different rocks? Use an example to explain your answer. Yes, volcanoes can make volcanic ash and Pumice. You just studied 6 terms!
Do all igneous rocks have the same mineral compositions?
Igneous rocks may be simply classified according to their chemical/mineral composition as felsic, intermediate, mafic, and ultramafic, and by texture or grain size: intrusive rocks are course grained (all crystals are visible to the naked eye) while extrusive rocks may be fine-grained (microscopic crystals) or glass ( …
Can two igneous rocks have the same minerals but different names?
Why can two igneous rocks have the same minerals but different names? The rocks may be of different sizes. Names of igneous rocks are arbitrary. They may have different textures.
Which pair of igneous rocks has the same composition?
Igneous rocks are categorized in pairs. The two rocks in a pair have the same composition but different textures: gabbro-basalt, diorite-andesite, and granite-rhyolite.
Why can two rocks look very different even though they are made of the same minerals?
Different rocks have different characteristics because of their minerals, the ways in which the rocks were formed, and the processes that acted on the rocks since they were formed.
Why can two igneous rocks have the same minerals but different names?
An igneous rock is classified on the basis of its mineral composition and the size of its mineral crystals. A rock formed from magma can have the same composition as a rock formed from lava. The rocks, though, will have different names, because the sizes of their crystals will be very different.
Can you determine what types of igneous rock share the same mineral composition?
For example, a felsic intrusive rock is called granite, whereas a felsic extrusive rock is called rhyolite. Granite and rhyolite have the same mineral composition, but their grain size gives each a distinct appearance.
Why can two igneous rocks have the same mineral but different names?
An igneous rock is classified on the basis of its mineral composition and the size of its mineral crystals. A rock formed from magma can have the same composition as a rock formed from lava. The rocks, though, will have different names, because the sizes of their crystals will be very different.
Can two minerals be the same if they have different chemical composition?
Polymorphism: two minerals with the same chemical composition but differing crystal forms. Example: diamond* and graphite* (the lead in your pencil) are both composed of carbon.
How can two igneous rocks made by the same process be so different in color?
He observes that one rock is light-colored and one is dark-colored. How can two rocks made by the same process be so different in color? They were worn down at different rates. The Grand Canyon was formed over millions of years as a river cut through the land.
What is the mineral composition of igneous rocks?
The major mineralogical components of igneous rocks can be divided into two groups: felsic (from feldspar and silica) and mafic (from magnesium and ferrous iron).
What is the composition of igneous rocks?
Composition refers to a rock's chemical and mineral make-up. For igneous rock, the composition is divided into four groups: felsic, intermediate, mafic, and ultramafic. These groups refer to differing amounts of silica, iron, and magnesium found in the minerals that make up the rocks.
Can two different minerals have the same chemical composition Support your answer with an example?
Example: diamond* and graphite* (the lead in your pencil) are both composed of carbon. These two minerals have the same composition but are very different from one another because of the internal arrangementof the atoms or crystal form.
What is a mineral composition?
The composition of a mineral can be expressed as a CHEMICAL FORMULA, which simply gives the proportions of the different elements and groups of elements in the mineral. The latter notion (groups of elements) comes into play for those minerals which have a restricted range of composition.
What mineral is common in all igneous rock types?
Feldspars, quartz or feldspathoids, olivines, pyroxenes, amphiboles, and micas are all important minerals in the formation of almost all igneous rocks, and they are basic to the classification of these rocks.
What kind of minerals make up most igneous rocks?
Most are composed of the eight most abundant elements in the Earth's crust. Because of the dominance of oxygen and silicon in the crust, igneous rocks are mostly made up of silicate minerals. These silicates can be generally divided into light and dark silicates.
Can two different minerals be composed of the same composition?
Polymorphism: two minerals with the same chemical composition but differing crystal forms. Example: diamond* and graphite* (the lead in your pencil) are both composed of carbon.
What are the mineral composition of rocks?
Most rocks are composed of minerals. Minerals are defined by geologists as naturally occurring inorganic solids that have a crystalline structure and a distinct chemical composition….(d). Composition of Rocks.
| Element | Chemical Symbol | Percent Weight in Earth's Crust |
|---|---|---|
| Oxygen | O | 46.60 |
| Silicon | Si | 27.72 |
| Aluminum | Al | 8.13 |
| Iron | Fe | 5.00 |
What are the types of igneous rocks based on composition?
As has already been described, igneous rocks are classified into four categories, based on either their chemistry or their mineral composition: felsic, intermediate, mafic, and ultramafic.
Can olivine and quartz be in the same rock?
Bowen's Reaction Series points out that there are commonly occurring mineral assemblages (based on similar temperatures of formation/crystallization). For example, quartz and olivine (at least the magnesium-rich variety) are not expected to occur together as an equilibrium assemblage.
What do all igneous rocks have in common?
Origin. Igneous rocks (derived from the Latin word for fire, ignis) can have very different mineral backgrounds, but they all share one thing in common: they formed by the cooling and crystallization of a melt.
What is mineral composition of igneous rocks?
The major mineralogical components of igneous rocks can be divided into two groups: felsic (from feldspar and silica) and mafic (from magnesium and ferrous iron).
What are the two most common types of igneous rocks?
The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet.
Which one of the following is the most common variety of igneous rock?
Basalt is the most abundant igneous rock in Earth's crust.
How do the types of igneous rocks differ from one another?
Igneous rocks can have many different compositions, depending on the magma they cool from. They can also look different based on their cooling conditions. For example, two rocks from identical magma can become either rhyolite or granite, depending on whether they cool quickly or slowly.
What type of igneous rock is based on composition?
As has already been described, igneous rocks are classified into four categories, based on either their chemistry or their mineral composition: felsic, intermediate, mafic, and ultramafic.
What are the two composition types of igneous rock?
Igneous rocks can be divided into four categories based on their chemical composition: felsic, intermediate, mafic, and ultramafic.