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Chrysotile Fibers – Immersed in a 1.550 Refractive Index Liquid in Cross Polarized Light with Gypsum accessory plate

Crocidolite Fibers- Immersed in a 1.680 Refractive Index Liquid in Cross Polarized Light

Crocidolite Fibers- Immersed in a 1.680 Refractive Index Liquid in Plane Polarized Light