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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.
Is dacite foliated or non-foliated?
Neither. Foliation is a term that applies to metamorphic rocks. Dacite is igneous.
What is the difference between tonalite and dacite?
Dacite is an extrusive rock while tontalite (along with granodiorite) is an iuntrusive equivalent. While dacite forms on the surface as the result of a volcanic eruption, tontalite forms when magma of a similar composition solidifies underground.
Dacite is what type of?
Dacite is a type of volcanic igneous rock that falls under the intermediate composition category. It is formed from the solidification of lava rich in silica and typically contains plagioclase feldspar and quartz minerals. Dacite is known for its porphyritic texture, showing large crystals (phenocrysts) embedded in a fine-grained groundmass.
What are some igneous rocks other than granite basalt pumice rhyolite and obsidian?
Other intrusive igneous rocks include gabbro, diorite, syenite, monzonite, granodiorite, monzodiorite, anorthosite, troctolite, peridotite, and pyroxeneite. Extrusive igneous rocks include dacite, andesite, phonolite, and trachyte when classified by composition, and tuff, and scoria in terms of texture.
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.
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.
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 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 did Native Americans use Dacite for?
a volcanis rock that was used as a knife or a small cutting tool
How much does one pound of dacite weigh?
As with one pound of anything, 1 pound of dacite weighs 1 bound or 0.45 kilograms.
Is dacite foliated or non-foliated?
Neither. Foliation is a term that applies to metamorphic rocks. Dacite is igneous.
How fast does dacite lava flow compared to mafic lava?
Dacite lava flows at speeds orders of magnitude slower than mafic lava.
Which volcanoe have eruptions of andesite and dacite?
Andesite and dacite are commonly associated with stratovolcanoes, such as Mount St. Helens in the United States and Mount Merapi in Indonesia. Both of these volcanoes have experienced eruptions that involved andesitic and dacitic magma compositions.
What is the difference between tonalite and dacite?
Dacite is an extrusive rock while tontalite (along with granodiorite) is an iuntrusive equivalent. While dacite forms on the surface as the result of a volcanic eruption, tontalite forms when magma of a similar composition solidifies underground.
What types of rock does Pinatubo have?
Mount Pinatubo is mostly composed of dacite.
