UnScramble this Word: e a e b r v?

Questions

In which war did Ulysses Grant & Robert Lee fight on the same side?

Mineral & the most abundant ore of iron, composed of ferric oxide, fe2o3?

Mineral, a cryptocrystalline variety of quartz of various shades of white, gray, yellow, brown, green, & blue?

Minerals that are treasured for their beauty & durability?

Name used interchangeably for a disease of rye, for the fungus causing the disease, for the sclerotium (compact hardened mycelium, or fruiting surface) of the fungus, & for the dried sclerotium, what contains certain valuable drugs?