A dodo laying an egg makes a distinctive musical plop sound. While dodo eggs set on the ground like other dropped items, they do not appear to move and cannot be picked up by passing them. They must be specifically tapped and harvested.
As noted above, hornblende is a name used for a number of dark-colored amphibole minerals that are compositional variants with similar physical properties. These minerals can not be distinguished from one another without laboratory analysis.he mineral hornblende has very few uses. Its primary use might be as a mineral specimen. However, hornblende is the most abundant mineral in a rock known as amphibolite which has a large number of uses. It is crushed and used for highway construction and as railroad ballast. It is cut for use as dimension stone.
The major dark colored minerals in a typical igneous rock will be biotite, hornblende, augite, and/or olivine: Biotite is easy because it forms perfect shiny black cleavages and can be peeled into flakes. It can be confused with hornblene, but hornblende does not flake. Hornblende and augite are often confused. Most reliable is cleavage: hornblende forms ~120Â°/60Â° cleavages whereas augite forms ~90Â° cleavages. In addition, hornblende tends to form very black and shiny cleavages, whereas augite forms duller black and not-very-reflective cleavages. Finally, hornblende tends to form long rectangular crystals whereas augite forms blocky crystals. Olivine is a glassy olive green and tends to form rounded, lumpy crystals.