Review Questions for silicate minerals and Bowen's Reaction Series

Which of the following is NOT a main type of silicate structure?
1. single chains
2. double chains
3. triple chains
4. sheets
5. frameworks
Which of the following minerals contain independent silicon-oxygen tetrahedra in its lattice structure?
1. amphibole
2. feldspar
3. olivine
4. pyroxene
5. mica (biotite, muscovite, etc.)
Which of the following minerals contain single chains of silicon-oxygen tetrahedra in their structure?
1. amphiboles
2. feldspars
3. olivines
4. pyroxenes
5. micas (biotite, muscovite, etc.)
Which of the following minerals contain double chains of silicon-oxygen tetrahedra in their structure?
1. amphiboles
2. feldspars
3. olivines
4. pyroxenes
5. micas (biotite, muscovite, etc.)
Which of the following minerals are called sheet silicates?
1. amphiboles
2. feldspars
3. olivines
4. pyroxenes
5. micas (biotite, muscovite, etc.)
Which of the following minerals are called framework silicates?
1. amphiboles
2. feldspars
3. olivines
4. pyroxenes
5. micas (biotite, muscovite, etc.)
Each silicon-oxygen tetrahedron in single-chain silicate minerals shares:
1. No oxygen atom
2. Two oxygen atoms
3. Alternating two and three oxygen atoms
4. Three oxygen atoms
5. Four oxygen atoms
Each silicon-oxygen tetrahedron in sheet silicate minerals shares:
1. No oxygen atom
2. Two oxygen atoms
3. Alternating two and three oxygen atoms
4. Three oxygen atoms
5. Four oxygen atoms
Each silicon-oxygen tetrahedron in framework silicate minerals shares:
1. No oxygen atom
2. Two oxygen atoms
3. Alternating two and three oxygen atoms
4. Three oxygen atoms
5. Four oxygen atoms
Which of the following minerals belongs to the CONTINUOUS branch of the Bowen's reaction series?
1. Olivine
2. Pyroxene
3. Amphibole
4. Plagioclase feldspar
5. Biotite
Which of the following minerals does not belong to the DISCONTINUOUS branch of the Bowen's reaction series?
1. Olivine
2. Pyroxene
3. Amphibole
4. Plagioclase feldspar
5. Biotite
In the discontinuous reaction series, which mineral crystallizes FIRST from a cooling magma?
1. Olivine
2. Pyroxene
3. Amphibole
4. Biotite
5. Potassium feldspar
In the discontinuous reaction series, which mineral forms as a result of reaction between olivine and the rest of the magma?
1. More olivine
2. Pyroxene
3. Amphibole
4. Biotite
5. Potassium feldspar
In the discontinuous reaction series, which mineral forms as a result of reaction between pyroxene and the rest of the magma?
1. More olivine
2. More pyroxene
3. Amphibole
4. Biotite
5. Potassium feldspar
In the discontinuous reaction series, which mineral forms as a result of reaction between amphibole and the rest of the magma?
1. More olivine
2. More pyroxene
3. More amphibole
4. Biotite
5. Potassium feldspar
Which of the following is common during crystallization of a magma?
1. felsic minerals crystallize first
2. mafic minerals are light and float in most magma chambers
3. felsic crystals are heavy and sink in most magma chambers
4. all crystals form at about the same time
5. none of the above
Igneous rocks like basalt and gabbro that are dark in tone and have approximately 50% silica are called:
1. felsic/silicic
2. intermediate
3. mafic
4. intrusive
5. extrusive
The intrusive (coarse grained) igneous rock diorite has the same chemical composition and mineralogy as the extrusive (fine grained) igneous rock:
1. rhyolite
2. basalt
3. andesite
4. peridotite
5. granite
An igneous rock that can be expected to contain large (>1 mm diameter) visible grains of quartz is:
1. Gabbro
2. Granite
3. Basalt
4. Peridotite
5. Andesite
Igneous rock that are silica-deficient but high in iron and magnesium are called:
1. felsic/silicic
2. intermediate
3. mafic
4. magnetic
5. ironic
The rock peridotite mostly contains:
1. Olivine
2. Pyroxene and calcium-rich plagioclase feldspars
3. Amphiboles
4. Biotite
5. Quartz and potassium feldspar
The rocks gabbro or basalt mostly contains:
1. Olivine
2. Pyroxene and calcium-rich plagioclase feldspars
3. Amphiboles
4. Biotite
5. Quartz and potassium feldspar
Igneous rocks that contain quartz and abundant feldspar are called:
1. felsic/silicic
2. intermediate
3. mafic
4. magnetic
5. ironic
Mafic igneous rocks are enriched in ___.
1. silica
2. quartz
3. magnesium, iron and calcium
4. sodium
5. potassium
Most ultramafic rocks are located ___.
1. in continental crust
2. in oceanic crust
3. in the lower crust below mountains
4. in the mantle
5. in the core

Review Questions for silicate minerals and Bowen's Reaction Series

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