Currently, the total amount of items that are given from deposits are between 500,000 and 1,000,000
(line 1579:

var amount = Random.Range(5000000, 10000000);​
)

It would be nice to be able to configure this range, for example:
{
    "Mineral Item Short Name": "sulfur.ore",
    "Chance": 50.0,
    "Minimum pM": 8.0,
    "Maximum pM": 15.0,
    "Minimum Amount": 500000,
    "Maximum Amount": 1000000
}​