Flints and other knapping stones should not be of the same material as sturdier stone

Is your feature request related to a problem? Please describe.

While looking through how melee weapon durability works for the semi-related issue #61052 I discovered that the material "Stone" has a chip resistance of 20. This is higher than wood and copper, and similar to steel. This does make sense for very hard rocks such as granite (which the in-game stone material has been based off of) or marble.

However, various sources https://archaeology.uiowa.edu/flintknapping-0 https://www.cambridge.org/core/books/stone-tools-in-the-paleolithic-and-neolithic-near-east/lithics-basics/487AB7381E1E3B42C4980448AF364C40 suggest that rocks used for knapping or paleolithic stonecrafting purposes would be brittle enough to chip easily, or at least fracture in a predictable way. This is in line with the in-game description of the stones used for crafting stone tools and arrowheads, as they are described as [[chipping]] in a semi-predictable way if struck.

As-is, the durability of stone weapons crafted this way would seem excessive compared to what would be expected of them.

Solution you would like.

Introduce a new material type that reflects flint and other easily knappable stones. This would be based ojn chert or flint for its material and some of the previous items that were made of the stone material that would have been made through knapping should be migrated to this one. Overall it should likely have less chip resistance than wood. The all-encompassing material name stone should also be changed to something although I don't know what would be for the best.

Describe alternatives you have considered.

Reducing the chip resistance of ALL stone?

Additional context

No response

CleverRaven / Cataclysm-DDA