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Which is the dominant feldspar in basalt?
Plagioclase
What is the most dominant mineral on earth?
feldspar...60 percent
What is the dominant rock type in the ocean crust and in the continental crust?
Basalt is the dominant rock in the ocean crust. And I assume Granite is dominant for continental crust.
What is the mohs scale for Feldspar?
Basalt scores an 8 on the Moh's scale. This makes it harder than quartz and vanadium, but weaker than boron and titanium carbide. It can easily scratch steel and glass. It is just about as hard as topaz. Basalt is also an igneous rock, formed by hardened lava, which explains why it is so hard.
Do Granite and Gabbro have the same chemical composition?
No. Gabbro is a mafic rock (magnesium and iron silicates) while granite is a felsic rock (referring to lighter elements such as potassium in feldspar). Felsic rock contains fewer heavy elements than mafic rocks. The chemical equivalent to gabbro is basalt, as both are mainly pyroxene and plagioclase feldspar. The difference is that gabbro is intrusive rock and basalt is extrusive.
Which is the dominant feldspar in basalt?
Plagioclase
Essential minerals of rock basalt?
anorthite-rich plagioclase, feldspar and augite
What is the most dominant mineral on earth?
feldspar...60 percent
What is the chemical composition of a basalt?
The mineralogy of basalt is characterized by a preponderance of calcic plagioclase feldspar and pyroxene. Olivine can also be a significant constituent.
What mineral will form phenocrystals in a basalt?
Most commonly one expects the calcium-feldspar plagioclase as phenocryst.
What are kilauea's mineral contents?
Kilauea is a Volcano it errupts a type of lava called "basalt".Typicaly the mineral constituants of basalt are:quartz (less than 20%)feldspar (plagioclase)feldspathoidsamphibolepyroxineolivine
What is the dominant rock type in the ocean crust and in the continental crust?
Basalt is the dominant rock in the ocean crust. And I assume Granite is dominant for continental crust.
What is the mohs scale for Feldspar?
Basalt scores an 8 on the Moh's scale. This makes it harder than quartz and vanadium, but weaker than boron and titanium carbide. It can easily scratch steel and glass. It is just about as hard as topaz. Basalt is also an igneous rock, formed by hardened lava, which explains why it is so hard.
Which is a coarse-grained igneous rock composed of mainly pyroxene plagioclase feldspar and olivine?
Gabbro.
What are chief elements in igneous rock?
Igneous rocks are composed mainly of silicate minerals. Granite is mostly quartz, feldspar and mica. Basalt is mainly feldspar, pyroxine and amphibole. Diorite can be a mixture of all of these minerals. Peridotite is mainly olivine (peridot) and pyroxine.
Do Granite and Gabbro have the same chemical composition?
No. Gabbro is a mafic rock (magnesium and iron silicates) while granite is a felsic rock (referring to lighter elements such as potassium in feldspar). Felsic rock contains fewer heavy elements than mafic rocks. The chemical equivalent to gabbro is basalt, as both are mainly pyroxene and plagioclase feldspar. The difference is that gabbro is intrusive rock and basalt is extrusive.
What kind stone came from Ancient Egypt?
Quartzite copper basalt limestone malachite turquoise jasper alabaster carnelian gold granite feldspar tin amethyst.
