Dr Silvia Charcoal

Veldspar = 100% Tritanium
Scordite = 67% Trit, 33% Pyerite
Plagioclase = 50% Pyer, 25% Trit, 25% Mexallon
Pyroxeres = 82% Trit, 11% Mexa, 6% Pyer, 1% Nocxium
Omber = 42% Trit, 42% Isogen, 16% Pyer
Kernite = 50% Mexa, 25% Trit, 25% Iso
Jaspet = 40% Mexa, 20% Trit, 20% Pyer, 20%Nocx
Hemorphite = 49% Nocx, 24% Trit, 24% Iso, 3%Zydrine
Hedbergite = 65% Iso, 32% Nocx, 3% Zydr
Gneiss = 40% Iso, 20% Trit, 20% Mexa, 20% Zydr
Ochre = 50% Nocx, 25% Trit, 25% Zydr
Crokite = 50% Zydrine, 25% Tritanium, 25% Nocxium
Bistot = 50% Zydrine, 25% Pyerite, 25% Megacyte
Arkonor = 42% Megacyte, 37% Tritanium
Spodumain = 72% Tritanium, 14% Pyerite, 14% Megacyte

The highest mineral yield for ore, per exhumer load:
Tritanium -> 1. Veldspar 2. Spodumain
Pyerite -> 1. Spodumain 2. Scordite
Mexallon -> 1. Gneiss 2. Plagioclase
Isogen -> 1. Dark Ochre 2. Omber
Nocxium -> 1. Crokite 2. Jaspet
Zydrine -> 1. Bistot 2. Crokite
Megacyte -> 1. Arkonor 2. Bistot