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Granite contains Quartz and Plagioclase Feldspar and Gabbro does not have neither if these minerals in it.
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∙ 12y ago
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Why would basalt and gabbro generally have higher chemical weathering rates than rhyolite and granite?
The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown.
Does gabbro have a higher silica content than granite?
Gabbro has less silica than granite.
Granite and gabbro have?
Have a similar texture
Does gabbro have a streak?
Only minerals have a streak, not rocks. The constituent minerals of a gabbro will all have a streak.
What is the difference between granite and gabbro?
the composition
What is lighter gabbro or granite?
Granite is lighter because its composed of felsic minerals while gabbro is made up of dark ferromagnesian minerals.
Which minerals are present in granite but are never present in gabbro?
Never say never, but it's mica.
Why would basalt and gabbro generally have higher chemical weathering rates than rhyolite and granite?
The ferromagnesian minerals in the gabbro and basalt are subject to oxidation and chemical breakdown.
Does gabbro have a higher silica content than granite?
Gabbro has less silica than granite.
What makes gabbro a rock and not a mineral?
Gabbro is usually made up of minerals such as pyroxene, plagioclase, amphibole and olivine which makes it an intrusive igneous rock.
How does a Granite rock and a Gabbro rock differ from each other?
The counterpart of Granite is Rhyolite,the counterpart of Gabbro is Basalt. Gabbro is mafic(Dark coloured) ,Granite is felsic (light coloured) Granite forms from magma of Granitic composition while Gabbro forms from magma of Basaltic composition.
Granite and gabbro have?
Have a similar texture
Does gabbro have a streak?
Only minerals have a streak, not rocks. The constituent minerals of a gabbro will all have a streak.
What is the difference between granite and gabbro?
the composition
It is sometimes called black granite?
gabbro
Where do granite and gabbro crystallize?
Deep underground.
Why does gabbro have a higher chemical weathering rate than granite?
Gabbro is mafic intrusive igneous rock and contains olivine, pyroxene, plagioclase and amphibole. These minerals are unstable at low pressure temperature conditions. In contrast, granite is felsic intrusive igneous rock and contains high amounts of quartz and orthoclase. Stability of minerals are increasing top to bottom in Bowen's Reaction Series.
