You're describing a soil that is 60% silt, 20% sand, and 20% clay. This soil would be classified as silt loam according to the USDA soil texture triangle.

Here's why:

* Silt loam is defined as having a soil texture with 50-80% silt, 15-50% sand, and 12-27% clay.

* Your soil falls within this range, making it a silt loam.

Note: While the USDA soil texture triangle is a useful guide, the actual classification of a soil can be influenced by other factors, such as soil structure, organic matter content, and mineral composition.