This is very sad. I'm a fan of his work, and he will be missed. I even went through a period in my teens where I tried to draw women just like him. I haven't been reminded of him in awhile, and it's depressing that it took his death for me to rediscover him. Seriously, the guy painted probably the most iconic image of Vampirella ever. If you don't know his work, you've probably at least seen this:
Beyond that, there's just something about the painterly approach to drafting taken by so many of the guys who drew sexy sci-fi comics in the 60's and 70's that just really appeals to me, and Gonzales was one of the best at the sensual brush line. Even his signature is sexy.
Another of the old guard has gone.