-CHANGES-
roll range:
1: Critfail, roll d20 to avoid. <20, roll 2d8 for damage
2-80: http://imgur.com/hqWLPWn
81-90: Ore. Roll d100 for type of ore, then d100 for roll type[1-90: gram roll. 91-100: kg roll], then d10 for amount.
91-100: Minerals. Roll d100 for type of mineral, d10 for amount. [carats(gems)/grams(nongems)]
-SPECIAL ROLL: QUARTZ-
Upon rolling Quartz, roll a d16 to determine type of quartz, then roll for amount.