Greetings fellow Tenno.
I’m just going to write down all the different resources that you can find on the different planets.
Let’s start with the common ones.
Ferrite: Mercury, Earth and Neptune.
Circuits: Ceres, Jupiter, Europa and Venus.
Nano Spores: Eris, Saturn, Neptune.
Polymer Bundle: Uranus, Mercury and Venus.
Salvage: Mars, Jupiter and Sedna.
Alloy Plate: Venus, Ceres and Sedna
Plastids: Saturn, Uranus, Pluto and Eris
Rubedo: Earth, Europa, Sedna and Pluto
Control Module: Neptune
Gallium: Mars and Uranus
Morphics: Mercury Mars Europa Pluto
Neural Sensors: Jupiter
Neurodes: Earth and Eris
Orokin Cell: Ceres and Saturn
And the amount that are dropped from the Common, uncommon and the rare ones.
Common resources can be found in quantities of hundreds at a time. They drop from lockers, breakables, normal enemies, and bosses.
Uncommon resources can be found in quantities usually between 10 and 50. They drop from lockers, breakables, normal enemies, and bosses.
Rare resources will usually drop in quantities of 1. They are most often found by defeating bosses, and very rarely from normal enemies or storage lockers/containers. All rare resources can also be found from assassination targets, such as Councilor Vay Hek and General Sargas Ruk.
I got a request from Quas that i should add a list of which boss has a higher droprate for the different materials.
Example, Material: Boss ( Mission )
This is for the Rare ones because I have no idea about the common and uncommon.
Control Module: is most commonly obtained by defeating The Hyena (Psamathe)
Gallium: is most often found by defeating Sgt. Nef Anyo or Tyl Regor. (War and Titania)
Morphics: are most often found by defeating Captain Vor, Sgt. Nef Anyo and Arn Etina. (Tolstoj, War and Hades)
Neural Sensors: are most often found by defeating The Golem. (Themisto)
Neurodes: are most often found by defeating Councilor Vay Hek and Phorid. (Everest and Naeglar)
The Orokin Cell is special, all the bosses have the same drop chance. But General Sargas Ruk has a better chance to drop it due to being located in Saturn. As stated before, the drop locations for Orokin Cells are Saturn and Ceres. (Tethys and Exta)
Feel free to contribute some good spots for farming the different resources so that I can create a list for this guide.
Have fun and good luck with your crafting/farming!