Answer 1


ហ្វែលស៊ិច(Felsic) ជាសិលាដែលមានពណ៍ភ្លឺ ហើយស្រាលព្រោះវាសម្បូរធាតុស៊ីលីស្យូម អាលុយមីញ៉ូម សូដ្យូម និងប៉ូតាស្យូម។


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