EVE New Citizens Q&A

So I had a recent mission to manufacture x20 Cap Boosters and didn't have enough of the three different ores I needed to refine. Found the first two pretty easily (VERY easily in fact) but the last one (mexallon) was another story. I jumped around from system to system, hit the Google and even the Eve wikipedia but was still unable to find it... all while working against a ticking clock (trying to get that bonus ISK) and finally just wound up buying the damn Cap Boosters from the market.

I know that this is a game based largely exploration which includes hitting, missing, and trial and erroring, but is there any comprehensive way to maybe scan systems for the ores? I love a challenge, and perhaps this will all come a lot faster once the learning curve has been absorbed a bit more, but if there's any kind of legit assist resource for this particular aspect that I might have missed, hip me to it fellow pilots!

Awesome! Can't believe I didn't see that chart, it definitely helps. I'll definitely make it a point to put in some quality time for that. And yes, I agree that the market can be a pilot's best friend in a pinch. Thanks for the info!

UPDATE: A couple missions later I was to act as decoy by mining a nearby asteroid so I could lure in and destroy a pirate, and when I come out of warp, guess what the asteroid is... kernite.

*sad trombone*