Sort:  

Another day of toil down Nichop's Shaft, mining away looking for nuggets.

V5 - Just a vein of marble.
V6 - The rock appears hollow, you put your hand in the hole you made and pull out what appears to be a Dragon Egg. You know an old flame, a certain Miss Targaryen who might be interested in this.
V7 - Boring bog standard iron ore.

Please try again tomorrow. I really want you to find a nugget. Also check the energy drink power up at top of article to get another 3 guesses today