Arknights Wiki

RMA70-12 is an upgrade material in Arknights.


A sensitive mineral with high conductivity. Can be used for a variety of upgrades and for production in the Factory.

A mineral whose natural form is a complicated polyhedron. Its value for Originium Arts was known long before its industrial value.


The first of the RMA70-type upgrade materials, this likely polycrystalline mineral with the shape of a polyhedron was discovered in Terran Year 1012 and are known for its superconductivity that makes it widely used for both Originium Arts and electronics industry. RMA70-12 is also used for Operator advanced skill upgrades and Mastery training, and the Elite 2 promotion of 4★ and 5★ Operators.



Regular drops

Operation Sanity Drop rate Sanity per drop
15 Sanity icon.png Rare (~27%) ~55 Sanity icon.png
21 Sanity icon.png Rare (30%) 70 Sanity icon.png
21 Sanity icon.png Rare (~19%) ~110 Sanity icon.png
18 Sanity icon.png Rare (~17%) ~105 Sanity icon.png
18 Sanity icon.png Rare (~34%) ~53 Sanity icon.png
18 Sanity icon.png Rare
21 Sanity icon.png Rare (~42%) ~50 Sanity icon.png
18 Sanity icon.png Uncommon
18 Sanity icon.png Rare
18 Sanity icon.png Uncommon
18 Sanity icon.png Rare

As seen on the table above, the best operation to farm RMA70-12 is 9-19 if one only needs them, or 4-9 if one needs them to process RMA70-24.png RMA70-24 due to it being a special drop there.

Extra drops


See also