The longfin mako shark is a very fast swimmer and lives in the deep sea.

Bok choy is one of my favorite vegetables.

We will use potassium cyanide in this experiment.

We visited the ancient dolmen.

Amphibole, a type of mineral, is mainly found in igneous rocks.

Anatase is a type of titanium oxide, characterized by the shape of its crystals.

In mineralogy, antigorite is also called leaf serpentine.

This cave is rich in guano.

This stone is a mineral called epidote.

Her necklace had a beautiful cat's eye stone.