This is a question that relates to theology as much as psychology! The mind is a mental construct, not directly observable. the brain can be observed and examined. It is assumed that the mind is a phenomenon that occurs in the brain but there is nothing that anyone from any discipline can do to display that it exists anywhere at all: yet we all agree we have minds.
If we lose the term 'mind' and substitute 'thinking' then that is an activity that occurs in the brain, and different kinds of thinking can be actually pinned down as happening in certain areas of the brain for the relevant area lights up when positon emission topography is carried out. Mind is like conscience, something we all know about and accept that exists, yet unobservable, and more than that, beyond human creativity so far to come up with a plan or method for observing it.
I do not believe scientists can point to one part or one piece of the brain to definitively declare where the mind is located. The mind body debate has been discussed between psychologists and philosophers for a long time. Therefore, in my opinion, the mind is a result of all parts of the brain working together.
Your mind allows you to think, make decisions, develop ideas, smell, see, hear, taste, touch, walk, talk, feel emotions, and so on. It is only when all parts of your brain are working together and functioning properly, can your mind be clear. If part of your brain is diseased or injured, your mind is likely impacted too, although it may not be noticeable.