#1
Which of the following minerals is a silicate mineral?
Quartz
ExplanationSilicate composed of silicon and oxygen tetrahedra.
#2
What is the most abundant group of minerals in the Earth's crust?
Silicates
ExplanationComprising silicon and oxygen, dominant in crust composition.
#3
Which mineral group forms the majority of clay minerals?
Micas
ExplanationLayered structure minerals, including muscovite and biotite.
#4
What is the chemical formula of olivine?
(Mg,Fe)2SiO4
ExplanationComposition of magnesium and iron silicate.
#5
Which silicate mineral group exhibits a sheet-like structure?
Phyllosilicates
ExplanationSheet silicates, characterized by micas and clays.
#6
Which mineral is a common example of a phyllosilicate?
Muscovite
ExplanationA type of mica, abundant in granite and metamorphic rocks.
#7
Which mineral exhibits a conchoidal fracture?
Quartz
ExplanationDistinctive fracture pattern common in quartz.
#8
Which mineral group does garnet belong to?
Silicates
ExplanationBelongs to the silicate mineral group due to its composition.
#9
What is the primary mineral in granite?
Feldspar
ExplanationMajor constituent, typically orthoclase or plagioclase.
#10
Which silicate mineral group contains single tetrahedral structures?
Nesosilicates
ExplanationIndependent silicate tetrahedra, such as garnet.
#11
What is the Mohs hardness of orthoclase feldspar?
5.5 - 6
ExplanationModerate hardness on the Mohs scale, common in igneous rocks.
#12
Which mineral is known for its perfect cleavage in one direction?
Mica
ExplanationDue to its layered structure, mica exhibits perfect cleavage.
#13
What is the chemical formula of amphibole minerals?
(Ca,Na)2-3(Fe,Mg,Al)5(Si,Al)8O22(OH)2
ExplanationComplex silicate structure common in metamorphic and igneous rocks.
#14
What is the chemical composition of garnet minerals?
(Ca,Fe)3Al2(SiO4)3
ExplanationCombination of calcium, iron, and aluminum in silicate structure.
#15
Which silicate mineral group exhibits a double-chain structure?
Inosilicates
ExplanationSilicates forming chains, such as pyroxene.
#16
What is the primary mineral in the Earth's mantle?
Olivine
ExplanationCommon mineral in the mantle composition, notably in peridotite.