1. Rocks and
Minerals.
Written By: Laura King
Barite: Barite is the most sulfetmineral(rock).
Crocite: Crocite is the only chromatemineral that is
important to collectors.
Celesite: Cellisite and anglesite are the sulfcates of
strontium and lead.
Gypsum: Gypsum is probably the most common
sulfate.
Apatite: Appatite is calcium.
Mimetie is symilar to pyromorphite.
Turquoise: Turquoise, a copper phosphate, is always
blue or green and has been used as a gemstone for
thousands of years.
Erythrite: Erythrite is a bright purple mineral known
best from Morrocco, is an arsent of the metal cobalt.
Vanadinite: Vanadinite, lead vandate, is one of the
most popular minerals.