DTEA has a good guide on using the DSS and materials farming here:
Source: https://www.youtube.com/watch?v=Ffqx_j_xRnc
As a general rule the green/blue area's are flat planes (he mentions dark blue but that's not the color I see), the cyan blue areas are rugged and the dark (navy) blue area's are high mountains - for materials farming stick to the flat planes if you can since its way easier, the other areas are more relevant for certain biologicals. You can farm geological's for materials in the same way.
If you are going to find the crystalline structures where all crystalline clusters will drop a single, grade 4 mat, the darker blue color is what you will look for as the structures seem to be more prevalent in the hilly or mountainous areas. You fly down to the surface and you will see the structures, they look like pointy objects, these are what you are looking for, shoot the clusters off and scoop them. You can only see them from like 100 meters up, going slow, night vision helps, even in daylight. When you land, you will see a double band, high up on the scanner screen, these are what you are looking for.
Because it's in a mountainous area, I would recommend that you use a small or medium ship because it can be hard to find a landing spot at times. You can only see them from like 100 meters up, going slow, night vision helps, even in daylight. When you land, you will see a double band, high up on the scanner screen, these are what you are looking for.
Goto HIP 36601
Planet C1A All crystalline clusters will be
Polonium.
Planet C1D - All crystalline clusters will be
Ruthenium.
Planet C3B - All crystalline clusters will be
Tellurium.
Planet C5A - All crystalline clusters will be
Technetium.
Goto Outotz LS-K D8-3
Planet B5A - All crystalline clusters will be
Yttrium.
Planet B5C - All crystalline clusters will be
Antimony.
Goto LHS 417
Planet 9EA - All clusters will be Selenium. Unfortunately, this moon is flatter than pancake and I never did find any crystalline clusters... Might want to do this one in Horizons.