info wanted on imperial mine. qld

Hi, When we were travelling a few years ago we went to cape york and went out to lockhart river. We came across an old mine site which was a mine in the early days. There is an old steam engine and various other old mining relics in the area. On the maps it was called the imperial mine. Does any of the readers on this forum have any idea what may have been mined there or more importantly to us any history about this mine and operational period of it.
Thanks travelergold

This may be what your looking for. cheers

link

http://trove.nla.gov.au/ndp/del/article/35939217?searchTerm=imperial%20mine.%20qld&searchLimits=l-australian=y