Gce Model Questions Vol1 2021 Geography Question 43
Practice objective / multiple choice question 43 from the 2021 Gce Model Questions Vol1 Geography examination.
A rock sample consists of four minerals with the following volume percentages and SiO\(_2\) contents:\n\n| Mineral | Volume % | SiO\(_2\) content (by weight) |\n|---------|----------|------------------------------|\n| Quartz | 55 % | 100 % |\n| Feldspar| 20 % | 60 % |\n| Mica | 15 % | 45 % |\n| Amphibole|10 % | 35 % |\n\nCalculate the overall SiO\(_2\) weight percentage of the rock and classify the rock as felsic, intermediate or mafic using the following limits: felsic > 65 % SiO\(_2\), intermediate 52-65 %, mafic < 52 %.
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About This Question
This is Gce Model Questions Vol1 2021 Geography Question 43. It is one of the objective questions from the 2021 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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