Bowen's Reactivity Series

Which of the following minerals is present in ultramafic igneous rocks?

• Muscovite

• Hornblende

• Pyroxene

• Biotite

What is the percentage of SiO₂ in mafic igneous rocks?

• <45%

• 45-52%

• 52-66%

• >66%

Which mineral is rare in intermediate igneous rocks?

• Quartz

• Olivine

• Muscovite

• Pyroxene

Which group of igneous rocks contains Muscovite?

• Ultramafic

• Mafic

• Intermediate

• Silicic

Which of the following minerals is NOT found in intermediate igneous rocks?

• Biotite

• Olivine

• K-Feldspar

• Hornblende

Who was able to observe the order at which minerals crystallize by melting rocks of known compositions?

• Charles Darwin

• Norman L. Bowen

• Albert Einstein

• Isaac Newton

According to Bowen's Reaction Series, which mineral is the first to crystallize?

• Quartz

• Biotite

• Olivine

• Muscovite

In Bowen's Reaction Series, which mineral is part of the Continuous Reaction Series?

• Pyroxene (Augite)

• Amphibole (Hornblende)

• Na-Plagioclase (Albite)

• Biotite

Which of the following minerals is the last to melt according to Bowen's Reaction Series?

• Olivine

• Pyroxene (Augite)

• Amphibole (Hornblende)

• Quartz

What is the relationship between melting and crystallization in Bowen's Reaction Series?

• First to melt = first to crystallize

• Last to melt = first to crystallize

• First to melt = last to crystallize

• Last to melt = last to crystallize