Iron/Tin ore

[David]

When I'm in the mines I can't tell the difference between rocks with tin ore or rocks with iron ore.
Is there an easy way to tell the difference?

[WidgetJG]

The iron sparkles a bit (as does the copper), and has a slight color difference under good light.

[Piperbird]

You kind of get used to it eventually, but you're right, it's not the most obvious difference. It's easier to see with the candle hat or miner hat (or the bike) than it is with just torches. It can also be tough to tell the copper and ruby apart by color, other than the ruby only has one pokey bit instead of three.