Disclaimer: This tool should be used as a very rough approximation, of how much of each raw material you can "expect" to get from the combined asteroid surfaces that you enter above. But be aware that these ratios will be heavily influenced by each asteroid's rarity bonuses, and by the distribution of raw materials on its surface.
Raw Materials Ratios
Ammonia
0
Carbon Dioxide
0
Carbon Monoxide
0
Hydrogen
0
Methane
0
Nitrogen
0
Sulfur Dioxide
0
Water
0
Apatite
0
Bitumen
0
Calcite
0
Feldspar
0
Graphite
0
Olivine
0
Pyroxene
0
Rhabdite
0
Taenite
0
Troilite
0
Merrillite
0
Xenotime
0
Coffinite
0
Uraninite
0
The "virtual" area for each raw material is an estimation, "as if" that area would yield no other raw material.