# Mineral Crystallization and the Golden Ratio

Scientifically speaking, Bismuth has a valence of 5 or "pentavalence", giving it the crystallization geometry of a Fibonacci spiral converging at right angles toward Phi = (1+√5)/2.

Scientifically speaking, Bismuth has a valence of 5 or "pentavalence", giving it the crystallization geometry of a Fibonacci spiral converging at right angles toward Phi = (1+√5)/2.