2. Mineral Analysis (ASTM D6721) of Coal Tailings on an Ignited Basis.
| mineral component | SiO2 | Al2O3 | Fe2O3 | K2O | CaO | SO3 | TiO2 | MgO |
|---|---|---|---|---|---|---|---|---|
| % composition | 58.47 | 24.86 | 6.65 | 2.70 | 2.65 | 2.47 | 1.09 | 1.07 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.