Is your feature request related to a problem? Please describe.
Adding a parameter such as the hardness of the indicator to the config. All so that it can be broken by hand.

Describe the solution you'd like
The vein indicator can be broken by hand(config).

Additional context
This would be useful to modpack makers. And me, of course
For example, in TFC, you cannot get a pickaxe at the initial stages of the game to dig up indicators. And what I described above could solve the problem.

Fixed in #474. The rocks can now be mine by hand. Just right click works too