SC_Signature_Scanner v3.4.0
There are various issues with mining deposit signatures on live servers atm (patch 4.6).
1- Asteroids have all gotten new unique signature values. This is fantastic, as the new values are far less likely to have overlapping signature values, even if multiple deposits are reported under a single signature value. Overall, this is a very good upgrade.
2- Ground deposits have had their signature values unified. This means that mining deposits that are minable with a ship or a vehicle now all have the same signature value of 4000, and all those minable by hand have a signature value of 3000.
This means that in space you can still differentiate between the various asteroid types, but on the ground the only difference is if its hand minable or not. Hopefully CIG will fix this in an upcoming patch.