Multiplier = 0.5?
Rarity = Slot1+Slot2+Slot3*0.5+Slot4*0.1
Size = (((Size*2+16)  * Multiplier) * Density) * Rarity
Variation = Size*0.5
Frequency = (Weight/1850)*2		#double GT5 chances, possibly smaller veins, will need to experiment