Sifting different kinds of Sand for different resources

[CyberCat05]

Every Rock type in the game has a corresponding kind of Sand (and Gravel), so the implication seems to be that every type of Sand is just a finely ground version of its host Rock. But if that's the case what separates the Lime item you get from grinding Limestone or Chalk in a Quern from the Limestone or Chalk Sands you can find in nature?

I figured the only thing that would make the raw sands unusable is that they'd be dirty, with a bunch of bits of organic matter and unrelated minerals. So I figured, the best way to process them and make them useable is to sift them with a sieve. You could do the process manually like with Panning, or you can make later make a sieve shaking table to automate the process with Mechanical Power.

• Limestone or Chalk Sand would yield 1 Lime per block
• Halite Sand would yield 1 Salt pet block (doesn't currently exist but should as Salt deserts are awesome)
• Claystone Sand would yield 0.5 Red Clay per block on average
• Shale Sand would yield 0.5 Blue Clay per block on average

I do think this is balanced. For Lime, you technically get less Lime per block than you get from Chalk or Limestone, as each block of those drops several stones. For Clays, you get several pieces of clay per Soil deposit, and you don't have to process them first. The Sieve is locked to the Copper Age already, so you won't be able to get clay from them immediately and would still need to find a deposit. It'd just provide a good, reliable yet labor-intensive way to get large quantities of Clay mid-to-late game if you absolutely can't manage to find a deposit near you, which I don't think is too broken since you already get several hundred pieces of Clay per deposit.

Spoiler

Technically Shale or Claystone Sand shouldn't really be able to exist outside of deserts, it would instantly absorb water and turn into clay the moment it got wet, but I'm willing to suspend my disbelief

With the next ones I'm not so sure they should be added since the stuff you would get from them is currently locked behind the Pulverizer.

• Sandstone, Chert or Granite Sand would yield Crushed Quartz
• Peridotite Sand would yield Crushed Olivine
• Bauxite Sand would yield Crushed Bauxite

All of these would technically allow the player to get certain items without Mechanical Power when they wouldn't otherwise be obtainable, Maybe there's a way to balance it that I'm not seeing, but right now I don't think it's balanced.

The one exception is the Silica Sands - I definitely think Glass should be obtaineable through those sands, as that's literally the most well-known use of sand IRL. Maybe instead of sifting them for Crushed Quartz, you could put them directly in a Bloomery for glass, with drawbacks like getting less glass per block and the resulting glass looking dirtier due to impurities. That way you wouldn't be able to get Crushed Quartz - and T1 Refractory Bricks - from Sand while still being able to use it for glass.