Micrometric Helix Formation in Agate and Chalcedony

Computational analysis of three candidate mechanisms for abiotic silica helix formation

3 Mechanisms 83% Discrimination 8% Helical Fraction Racemic Chirality

Mechanism Comparison Scores

Morphometric Summary

Discriminant Feature Weights

Chirality Distribution

Mechanism Scores by Criterion

Criterion	DLA	Reaction-Diffusion	Fibrous Growth
3D Helix Production	0.000	0.000	0.094
Correct Pitch Range	0.000	0.300	0.050
Correct Radius Range	0.200	0.300	0.000
Racemic Chirality	0.500	0.800	0.900
Composition Match	0.700	0.600	0.900
Total	0.280	0.400	0.389

Key Results

Metric	Value
DLA Fractal Dimension	1.455
DLA Helicity	0.026
R-D Dominant Wavelength	28.0
R-D Produces 3D Helix	No
Fibrous Helical Fraction	8.0%
Chirality (Right:Left)	2:6
Binomial p-value	0.289
Classification Accuracy	83.0%
Best Mechanism	R-D (0.400)
Best Pairwise Separation	Agate vs Biogenic (3.296)