Which preposition to use with amygdaloids

as Occurrences 1%

"Kipper on toast" is not nearly so rich in carbohydrates, calories and aplanatic amygdaloids as "Kipper meat."

of Occurrences 1%

Chalcedony, apparently from amygdaloid of the trap formation, was also found at Port Warrender.

under Occurrences 1%

Observed amygdaloid under foot among the granite, and sandstone boulders.

Which preposition to use with  amygdaloids