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What is plagioclase feldspar with quartz and olivine?
Plagioclase feldspar is a common mineral in igneous rocks, while quartz is a mineral often found in a variety of rocks. Olivine is a green mineral commonly found in mafic igneous rocks. When all three minerals are present in a rock, it typically indicates a mafic igneous rock such as basalt or gabbro.
Which intrusive igneous rock could be composed of 60 percent pyroxene 25 percent plagioclase feldspar 10 percent olivine and 5 percent amphibole?
This intrusive igneous rock could be a gabbro. Gabbros are composed mainly of pyroxene and plagioclase feldspar, with lesser amounts of olivine and amphibole. This composition suggests a mafic rock with dark minerals dominating.
Sand collected at a beach contains a mixture of pyroxene olivine amphibole and plagioclase feldspar . The rock from which this mixture of sand came is best described as?
The rock most likely belongs to the igneous category, such as a basalt that contains pyroxene, olivine, amphibole, and plagioclase feldspar.
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
Which minerals are found in the igneous rocks gabbro and basalt?
Gabbro and basalt are both mafic igneous rocks and contain minerals such as pyroxene, plagioclase feldspar, and olivine. Gabbro typically has a coarser grain size compared to basalt, which has a fine-grained texture due to its rapid cooling at the Earth's surface.
Why are olivine and calcium-rich plagioclase often found together in igneous rocks?
Because both crystallize at similar temperatures and pressures according to Bowen's Reaction Series.
Why are olivine and calcium-Rich plagioclase often found in Igneous rocks?
Because both crystallize at similar temperatures and pressures according to Bowen's Reaction Series.
What mineral composition is most characteristic of mafic rocks?
olivine, pyroxene, and calcium-rich plagioclase
What greyish igneous rock contains plagioclase feldspar and small amounts of quartz and olivene?
None, you don't get quartz and olivine in the same igneous rock.
What is plagioclase feldspar with quartz and olivine?
Plagioclase feldspar is a common mineral in igneous rocks, while quartz is a mineral often found in a variety of rocks. Olivine is a green mineral commonly found in mafic igneous rocks. When all three minerals are present in a rock, it typically indicates a mafic igneous rock such as basalt or gabbro.
What temperature do olivine and calcium rich plagioclase feldspar crystallize from magma?
Olivine typically crystallizes at temperatures between 1,200 to 1,400 degrees Celsius, while calcium-rich plagioclase feldspar crystallizes at slightly lower temperatures between 900 to 1,200 degrees Celsius from magma.
Which igneous rock is dark colored cooled rapidly on earths surface and is composed mainly of plagioclase feldspar olivine and pyroxene?
scoria
What does dolerite mean?
A dolerite occurs in dikes and sills. These are dark, medium-grained igneous rocks that are typically containing olivine, plagioclase, and pyroxene.
Does basalt have sodium in it?
No. Calcite is not an igneous mineral. Basalt primarily consists of pyroxines and plagioclase with some olivine.
Which intrusive igneous rock could be composed of 60 percent pyroxene 25 percent plagioclase feldspar 10 percent olivine and 5 percent amphibole?
This intrusive igneous rock could be a gabbro. Gabbros are composed mainly of pyroxene and plagioclase feldspar, with lesser amounts of olivine and amphibole. This composition suggests a mafic rock with dark minerals dominating.
Sand collected at a beach contains a mixture of pyroxene olivine amphibole and plagioclase feldspar . The rock from which this mixture of sand came is best described as?
The rock most likely belongs to the igneous category, such as a basalt that contains pyroxene, olivine, amphibole, and plagioclase feldspar.
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
