Screening ancient gravel yields 1 Archaeology experience each from level 5 to 37, which increases to 3 experience each from level 38 to 70, 5 experience each from level 71 to 92, 12 experience each from level 93 to 110 and 20 experience each from level 111 to 120.
For details on what you can get at your Archaeology level, see the calculator below. For more detail on soil screening mechanics, see Soil#Mechanics.
When successfully screening soil, an excavation spot that the player is able to excavate from is randomly selected, and the material/artefact obtained is selected from those available at that excavation, based on the relative chances of each material at that excavation.
The success chance of screening soil depends on the player's Archaeology level in two ways: a stat_random call is performed, and the high value of that call depends on the Archaeology level. Wearing the master archaeologist's outfit increases the stat_random value multiplicatively by 1.07. A player wearing the outfit will be approximately 95.7% successful at level 120. If the stat_random roll is not successful, then nothing is obtained. Otherwise, a 1/1000 roll for an artefact is performed; if the 1/1000 roll is not successful, then the player receives a material instead.
It is believed boosts above level 120 will continue to increase the success rate, but this has not been extensively tested. This would mean that boosting to level 127 or above will yield a 100% success rate, although this is currently only achievable with advanced pulse cores.
When successfully screening soil, an excavation spot that the player is able to excavate from is randomly selected. There is a 1/1,000 chance to obtain an artefact from that excavation instead of a material.
module = Archaeology soil calculator
modulefunc = main
form = soilcalc-form
result = soilcalc-result
name=Soil screening calculator
param = level|Archaeology level|120|int|1-128||
param = outfit|Master archaeologist outfit worn?|false|check|true,false||
param = soil|Soil|Ancient gravel|hidden|||
param = numsoil|Amount of soil|5000|int|1-||
param = siftsoilspell|Using Sift Soil spell?|false|check|true,false||
param = combinedartefacts|Combine artefacts in display|false|check|true,false||Collapses all the artefacts in the output to a single row instead
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The result will appear here when you submit the form.