A: Fiction. Antibiotics used in animals are the cause of major human drug resistant diseases. Myth: âAnimal antibiotics kill more people than breast and prostate cancerâ screamed a blogger in the wake of an AP story on antibiotics used to keep food animals healthy.
Mineral Luster. Luster is a description of the way a mineral surface looks when light reflects off of the surface. Luster has two categories, metallic and nonmetallic.
some minerals have a metallic lustre, like galena (PbS) ans look like pieces of metal. Most minerals (maybe all?) with metallic lustre are opaque (do not alow light through).uster (or Lustre) is a description of the way light interacts with the surface of a crystal,rock or mineral-For example a metallic lustre or silky lustre.