This was inspired by the fact that Adamantine is bad for some applications, most noticably blunt weapons. I am trying to mod it so that you can find 2 ores that compliment one another. Both are based on the original adamantine's definition to make sure it stays within the league of the great metal.
First, Mithril. Mithril would have the old adamantines lightness and value. It would be great for sharp weapons, somewhat worse (still better than steel) for armor, and terrible for blunt weapons.
Then, modifying Adamantine. Adamantine would become as heavy as platinum and fairly dull. It would also be worth less than Mithril. It would be fantastic for blunt weapons, much better than Mithril (though still worse than old adamantine) as armor, but terrible for sharp weapons.
The raws are below; feel free to post any suggestions and point out errors. Being not too experienced at modding DF, I'm sure there're ways to improve this.
Refined Metals:
[INORGANIC:ADAMANTINE]
[USE_MATERIAL_TEMPLATE:METAL_TEMPLATE]
[STATE_NAME_ADJ:ALL_SOLID:adamantine]
[STATE_NAME_ADJ:LIQUID:molten adamantine]
[STATE_NAME_ADJ:GAS:boiling adamantine]
[DISPLAY_COLOR:3:3:0]
[BUILD_COLOR:3:3:0]
[MATERIAL_VALUE:200]
[SPEC_HEAT:7500]
[MELTING_POINT:25000]
[BOILING_POINT:50000]
[ITEMS_WEAPON][ITEMS_WEAPON_RANGED][ITEMS_AMMO][ITEMS_DIGGER][ITEMS_ARMOR][ITEMS_ANVIL]
[ITEMS_HARD]
[ITEMS_METAL]
[ITEMS_BARRED]
[ITEMS_SCALED]
[ITEMS_SOFT]
[WAFERS]
[SOLID_DENSITY:21400]
[LIQUID_DENSITY:19770]
[MOLAR_MASS:195084]
[IMPACT_YIELD:4000000]
[IMPACT_FRACTURE:5000000]
[IMPACT_STRAIN_AT_YIELD:0]
[COMPRESSIVE_YIELD:4000000]
[COMPRESSIVE_FRACTURE:5000000]
[COMPRESSIVE_STRAIN_AT_YIELD:0]
[TENSILE_YIELD:4000000]
[TENSILE_FRACTURE:5000000]
[TENSILE_STRAIN_AT_YIELD:0]
[TORSION_YIELD:4000000]
[TORSION_FRACTURE:5000000]
[TORSION_STRAIN_AT_YIELD:0]
[SHEAR_YIELD:4000000]
[SHEAR_FRACTURE:5000000]
[SHEAR_STRAIN_AT_YIELD:0]
[BENDING_YIELD:4000000]
[BENDING_FRACTURE:5000000]
[BENDING_STRAIN_AT_YIELD:0]
[MAX_EDGE:8000]
[DEEP_SPECIAL]
[STOCKPILE_THREAD_METAL]
[STATE_COLOR:ALL_SOLID:BLACK]
[INORGANIC:MITHRIL]
[USE_MATERIAL_TEMPLATE:METAL_TEMPLATE]
[STATE_NAME_ADJ:ALL_SOLID:mithril]
[STATE_NAME_ADJ:LIQUID:molten mithril]
[STATE_NAME_ADJ:GAS:boiling mithril]
[DISPLAY_COLOR:3:3:1]
[BUILD_COLOR:3:3:1]
[MATERIAL_VALUE:300]
[SPEC_HEAT:7500]
[MELTING_POINT:25000]
[BOILING_POINT:50000]
[ITEMS_WEAPON][ITEMS_WEAPON_RANGED][ITEMS_AMMO][ITEMS_DIGGER][ITEMS_ARMOR][ITEMS_ANVIL]
[ITEMS_HARD]
[ITEMS_METAL]
[ITEMS_BARRED]
[ITEMS_SCALED]
[ITEMS_SOFT]
[WAFERS]
[SOLID_DENSITY:200]
[LIQUID_DENSITY:2600]
[MOLAR_MASS:55845]
[IMPACT_YIELD:3000000]
[IMPACT_FRACTURE:3000000]
[IMPACT_STRAIN_AT_YIELD:0]
[COMPRESSIVE_YIELD:3000000]
[COMPRESSIVE_FRACTURE:3000000]
[COMPRESSIVE_STRAIN_AT_YIELD:0]
[TENSILE_YIELD:3000000]
[TENSILE_FRACTURE:3000000]
[TENSILE_STRAIN_AT_YIELD:0]
[TORSION_YIELD:3000000]
[TORSION_FRACTURE:3000000]
[TORSION_STRAIN_AT_YIELD:0]
[SHEAR_YIELD:3000000]
[SHEAR_FRACTURE:3000000]
[SHEAR_STRAIN_AT_YIELD:0]
[BENDING_YIELD:3000000]
[BENDING_FRACTURE:3000000]
[BENDING_STRAIN_AT_YIELD:0]
[MAX_EDGE:150000]
[DEEP_SPECIAL]
[STOCKPILE_THREAD_METAL]
[STATE_COLOR:ALL_SOLID:AQUA]
Raw Metals:
[INORGANIC:RAW_ADAMANTINE]
[ITEM_SYMBOL:'*']
[THREAD_METAL:ADAMANTINE:100]
[STATE_NAME_ADJ:ALL_SOLID:raw adamantine]
[STATE_NAME_ADJ:LIQUID:molten raw adamantine]
[STATE_NAME_ADJ:GAS:boiling raw adamantine]
[DISPLAY_COLOR:3:7:0]
[TILE:139]
[MATERIAL_VALUE:150]
[SPEC_HEAT:7500]
[MELTING_POINT:25000]
[BOILING_POINT:50000]
[SOLID_DENSITY:21400]
[LIQUID_DENSITY:19770]
[MOLAR_MASS:195084]
[IMPACT_YIELD:2500000]
[IMPACT_FRACTURE:3000000]
[IMPACT_STRAIN_AT_YIELD:0]
[COMPRESSIVE_YIELD:2500000]
[COMPRESSIVE_FRACTURE:3000000]
[COMPRESSIVE_STRAIN_AT_YIELD:0]
[TENSILE_YIELD:2500000]
[TENSILE_FRACTURE:3000000]
[TENSILE_STRAIN_AT_YIELD:0]
[TORSION_YIELD:2500000]
[TORSION_FRACTURE:3000000]
[TORSION_STRAIN_AT_YIELD:0]
[SHEAR_YIELD:2500000]
[SHEAR_FRACTURE:3000000]
[SHEAR_STRAIN_AT_YIELD:0]
[BENDING_YIELD:2500000]
[BENDING_FRACTURE:3000000]
[BENDING_STRAIN_AT_YIELD:0]
[DEEP_SPECIAL]
[MAX_EDGE:1000]
[ITEMS_HARD]
[IS_STONE]
[INORGANIC:RAW_MITHRIL]
[ITEM_SYMBOL:'*']
[THREAD_METAL:MITHRIL:100]
[STATE_NAME_ADJ:ALL_SOLID:raw mithril]
[STATE_NAME_ADJ:LIQUID:molten raw mithril]
[STATE_NAME_ADJ:GAS:boiling raw mithril]
[DISPLAY_COLOR:3:7:1]
[TILE:139]
[MATERIAL_VALUE:250]
[SPEC_HEAT:7500]
[MELTING_POINT:25000]
[BOILING_POINT:50000]
[SOLID_DENSITY:200]
[LIQUID_DENSITY:2600]
[MOLAR_MASS:55845]
[IMPACT_YIELD:1500000]
[IMPACT_FRACTURE:1800000]
[IMPACT_STRAIN_AT_YIELD:0]
[COMPRESSIVE_YIELD:1500000]
[COMPRESSIVE_FRACTURE:1800000]
[COMPRESSIVE_STRAIN_AT_YIELD:0]
[TENSILE_YIELD:1500000]
[TENSILE_FRACTURE:1800000]
[TENSILE_STRAIN_AT_YIELD:0]
[TORSION_YIELD:1500000]
[TORSION_FRACTURE:1800000]
[TORSION_STRAIN_AT_YIELD:0]
[SHEAR_YIELD:1500000]
[SHEAR_FRACTURE:1800000]
[SHEAR_STRAIN_AT_YIELD:0]
[BENDING_YIELD:1500000]
[BENDING_FRACTURE:1800000]
[BENDING_STRAIN_AT_YIELD:0]
[MAX_EDGE:1000]
[DEEP_SPECIAL]
[ITEMS_HARD]
[IS_STONE]