All the following rocks are metamorphic except? by Sunday | Aug 11 | Geography WAEC | 0 comments A. gneiss B. marble C. gabbro D. slate E. quartzite Correct Answer: Option C – gabbro Users Also Read These:Which of the following rocks is not formed from…Which of the following minerals is likely to be…Which of the following is not an example of…Igneous rocks are different from sedimentary rocks by their?Which of the following is not a metamorphic rock?