Neco Model Questions Vol1 2018 Geography Question 34
Practice objective / multiple choice question 34 from the 2018 Neco Model Questions Vol1 Geography examination.
A rock sample contains the following mineral percentages by volume: quartz \(45\%\), feldspar \(35\%\), mica \(10\%\), amphibole \(5\%\) and other minerals \(5\%\). (a) Identify the most probable rock type. (b) Given the mineral densities: quartz \(2.65\) g cm\(^{-3}\), feldspar \(2.56\) g cm\(^{-3}\), mica \(2.80\) g cm\(^{-3}\), amphibole \(3.00\) g cm\(^{-3}\), others \(2.70\) g cm\(^{-3}\), calculate the average density of the rock. (c) Compare the calculated density with the typical density of the identified rock type (granite ≈ 2.65 g cm\(^{-3}\)).
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About This Question
This is Neco Model Questions Vol1 2018 Geography Question 34. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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