Neco Model Questions Vol1 2017 Geography Question 45
Practice objective / multiple choice question 45 from the 2017 Neco Model Questions Vol1 Geography examination.
A rock sample consists of the following mineral volume percentages: quartz 55 %, feldspar 30 %, mica 10 %, and accessory minerals 5 %. The rock is known to have crystallised at moderate depth, implying a moderate cooling rate. Using the approximate silica content of quartz (100 %) and feldspar (65 %), determine whether the rock is igneous, sedimentary or metamorphic, and name the specific rock type.
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About This Question
This is Neco Model Questions Vol1 2017 Geography Question 45. It is one of the objective questions from the 2017 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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