Eminem Terminally Ill Fan Dies Day after Visit

1/13/2015 7:15 AM PST

The terminally ill fan Eminem visited over the weekend, passed away Monday afternoon ... just about 24 hours after he got to meet his favorite rapper.

17-year-old Gage Garmo -- who was battling a rare type of bone cancer called Osteosarcoma -- died the day after Em arranged a secret visit to Gage's home Sunday ... and spent an hour talking and hanging out with him

Gage's family said the visit really raised his spirits. 

A candlelight vigil was held last night by friends and family at Rochester High School -- where he'd been the football team's manager.