round 2: found at y=5
red granite: pitchblende/uranininite,
black granite: sheldonite/sperrylite
limestone: galena/arsenopyrite/pyrite, huebnerite/wolframite/ferberite/scheelite,
I looked at the tooltip, and even threw it in a crucible and checked the scraps. It's gold, 105,000 possible units of gold.
The andesite gold was real. There were about 35000 ore blocks in the one i found, which is slightly high.
I found a few ores around, didn't put the biome or height for most but this may help:
komaatite: redstone, magnesite
limestone: limonite, gold (now that i think about it that may have been pyrite), molybdenite, tetrahedrite, galena(lead)