Mitch Mitchell has been one of my favorite drummers since the first time I heard Jimi Hendrix when I was around 10 years old. His unique style came from his jazz background which he incorporated into the fierce electric rock style that Hendrix helped create.
It is nearly impossible to play a note for note version of any Hendrix song but I dont think Mitch would have wanted someone to learn his patterns this way.
One of the most famous rock drum breaks of all time is from Fire. Each time the verse comes around it is slightly different and when you listen to live versions he takes some of the pattern below but always changes it a little bit giving new life to the song every time its played.
To play in the style of Mitch Mitchell a drummer should have a good background in jazz and how to 'swing' a beat. Where in jazz the 8th note is swung, Mitch swings the 16th note. When you swing the 16th there is a little extra space in between the '1' and and the 'e' and also between the '&' and the 'a'. If you filled in the space and played straight though it would create 16th note triplets.
When playing with a 16th note swing your fills can be made up of 16th note triplet. A great 16th note triplet fill idea is to play R,L,Bass, R,L,Bass. First try both hand on the same drum then try keeping your left hand on the tom and moving your right hand between the snare and floor tom.
This same R, L, Bass pattern is also used as 16th notes in one of the drum breaks in Little Wing.