Figure 2
From: Texture Analysis of Polycrystalline Vaterite Spherulites from Lake Sturgeon Otoliths
Optical micrograph (crossed polarizers) of vaterite spherulites in a matrix of a large calcite crystal from an adult Lake Sturgeon otolith, Lake Winnebago, Wisconsin (standard polished thin section 30 μm thick). The onion-like rings of the spherulites are interpreted to be the daily growth rings. One spherulite in the right center is oriented such that the isogyres of a uniaxial interference figure are seen.
