Chert microscope slide exhibiting interlocking crystals of quartz characteristic of this silica rich microcrystalline, cryptocrystalline sedimentary rock. These thin sections offer an insight into the varying shades of quartz under crossed polarised light and the relationship between crystals in crystalline sedimentary rocks
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Chert microscope slide exhibiting the interlocking crystals of quartz characteristic of this silica rich microcrystalline, cryptocrystalline sedimentary rock. The crystals are relatively large in this Foss Mine ( Scotland ) variety of chert and individual crystals of quartz can easily be distinguished in XPL view. Chert can occur as a primary deposit however it frequently occurs as a replacement mineral during diagenesis e.g. Flint nodules in Chalk. The section is made to 30 microns thickness and the glass is 46 x 27 mm in size with a cover slip. Supplied in a protective card sleeve with a label, ideal for microscopy.