Cavansite

Cavansite(Formula: (Ca,Na)₈(Si₄O₁₀)₄·4H₂O) is a relatively rare and striking mineral, known for its vibrant blue color. The color is a result of the mineral. It belongs to the zeolite group, which consists of minerals that typically form in volcanic rocks or in environments where there is significant hydrothermal activity. Cavansite forms as prismatic or tabular crystals, and they can often be found in radiating or fan-like aggregates. Cavansite has a distinct, crystal form that can be quite captivating, making it a popular choice for mineral collectors.