4" Aragonite Mineral Two Tone Red Crystal Cluster Specimen Tazouta Morocco

Location: Tazouta, Morocco

Weight: 11.9 Ounces

Dimensions: 4 Inches Long, 2.5 Inches Wide, 2.2 Inches Thick

The item pictured is the item you will receive. 

Aragonite is a naturally occurring calcium carbonate mineral that plays a vital role in the formation of marine shells and skeletal structures. Many sea-dwelling invertebrates depend on aragonite to create strong, lightweight protective coverings, which is why brightly colored seashells frequently display the mineral’s unique crystalline beauty. Its ability to form easily under surface conditions highlights both its ecological significance and widespread natural presence.

Closely related to calcite, aragonite belongs to a group of minerals known as polymorphs. Although chemically identical, aragonite and calcite differ in crystal arrangement, resulting in subtle differences in stability and formation environments. Today’s oceans generally favor calcite, but Earth’s geological history reveals alternating “aragonite seas” and “calcite seas,” where one mineral temporarily became more dominant than the other.

These shifts provide valuable clues about changes in ocean chemistry over time. By studying aragonite in both living organisms and fossilized shells, scientists gain insights into ancient climates, marine biodiversity, and the processes that shape Earth’s surface.