The weight of one cubic foot of basalt can vary depending on its specific composition and density. However, a good estimate for the weight of one cubic foot of basalt is 165 pounds.

Here's why:

* Basalt density: Basalt typically has a density ranging from 160 to 180 pounds per cubic foot (pcf).

* Variations: The exact density can vary due to factors like:

* Porosity: Basalt with higher porosity (more air pockets) will be less dense.

* Mineral content: The specific minerals present in the basalt can influence its density.

* Weathering: Weathering can alter the density of basalt.

Therefore, 165 pcf is a reasonable average value for the weight of one cubic foot of basalt.