* Alluvium: This is the general term for sediment deposited by a river or stream. It often consists of a mixture of silt, clay, sand, and gravel.
* Riverine sediment: This is another general term that refers to sediment deposited by rivers, including silt.
* Floodplain deposit: This refers specifically to sediment deposited on the floodplain of a river during flood events. This sediment often includes silt.
* Loess: This is a specific type of wind-blown silt that is deposited on riverbanks and other areas. It is often rich in minerals and can be very fertile.
* Bank deposit: This is a more general term that can refer to any type of sediment deposited on a bank, including silt.
To give you a more precise answer, I need more information about the specific context. For example:
* What type of river or stream deposited the silt?
* What is the location of the deposit?
* What are the characteristics of the silt?
With more information, I can provide you with a more accurate name for the mineral-rich silt deposited on banks.