Earth Sciences Glossary

noun a mineral of the pyroxene group, consisting of a silicate of calcium and iron

• The geologist identified the mineral as acmite, a type of pyroxene mineral.
• I found a cool looking rock with acmite in it while hiking.
• Check out this sick acmite I found on my rock hunting trip!
• Her determination was as hard as acmite, unyielding to any obstacles in her path.

noun a green mineral of the amphibole group consisting of calcium, magnesium, and iron silicate

adjective describing the green color or properties of actinolite

• Actinolite is a mineral belonging to the amphibole group.
• I found a cool piece of actinolite while hiking in the mountains.
• Check out this rad actinolite rock I scored at the gem show!
• The actinolite in her eyes reflected her inner strength and resilience.