Mining missing ores and features.

[myeffort]

For the last week or two I'm observing several changes in mining:

- There's no erebite, ever. It's substitued with plain rock.
- Geological scanner only shows crystaline matters. No density modifie, dangers o anomalies.
- Desnse rocks, which were a target for rig extraction unit, are extinct too.
- Certain times there won't be any plasma stone on the level.