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What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
What is the approximate oxygen content of air?
The approximate oxygen content of air is around 21%.
Is dacite a metamorphic rock?
No. Dacite is an extrusive igneous rock.
Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
How is dacite formed?
Dacite is an extrusive igneous rock; in other words a volcanic rock. It forms when magma of an intermediate-felsic composition erupts from a volcano and cools at the surface. Because if its high viscosity and generally high gas content it usually erupts explosively, forming ash and pumice rather than lava flows. When this is laid down it forms what can be called dacite tuff. In some instances it will erupt in a non-explosive fashion, forming lava domes or extremely slow lava flows.
What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
What is the difference in composition between a dacite and an andesite?
The main difference between dacite and andesite lies in their silica content. Dacite has a higher silica content than andesite, making it more viscous. Dacite also typically contains more quartz and less mafic minerals than andesite.
What is the dacite rock used for?
Dacite rock can be used for filler in aggregate. It is used to build roads but not on concrete areas because it has a high silica content. Ancient civilization used the dacite rock to make tools.
What is the approximate oxygen content of air?
The approximate oxygen content of air is around 21%.
Is dacite a metamorphic rock?
No. Dacite is an extrusive igneous rock.
Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
How is dacite formed?
Dacite is an extrusive igneous rock; in other words a volcanic rock. It forms when magma of an intermediate-felsic composition erupts from a volcano and cools at the surface. Because if its high viscosity and generally high gas content it usually erupts explosively, forming ash and pumice rather than lava flows. When this is laid down it forms what can be called dacite tuff. In some instances it will erupt in a non-explosive fashion, forming lava domes or extremely slow lava flows.
What is the dacite's habitat?
Dacite does not have habitat because it is not a living thing; it is a kind of rock. Specifically, dacite is a volcanic rock, so it will be found on and near volcanoes, typically stratovolcanoes.
What is the approximate energy content of a litre of petrol?
35 MegaJoules
What rock types does the Cotopaxi volcano have?
The Cotopaxi volcano in Ecuador is primarily composed of andesite and dacite rock types. Andesite is a volcanic rock with an intermediate composition between basalt and rhyolite, while dacite has a similar composition to andesite but with more silica content.
Magma that contains SiO2?
All magma contains SiO2. What affects magma is the amount of SiO2 in it. Magma is classified into four basic groups that can be determined by how much silica it contains by weight. Felsic: >63% SiO2 Untermediate: 52-63% SiO2 Mafic: 45-52%SiO2 Ultramafic: <45% SiO2 This spectrum is a basic guide to silicate magmas, which encompass that vast majority of magma. One exception is rare carbonatite magma, which is carbonate rather than silicate based, and even that contains some SiO2.
What is the charge of SiO2?
The charge of SiO2 is neutral.
