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Figure 3
Representative optical photomicrographs from the petrographic study of the `zebra rock' samples. (a) Micro-crystalline quartz surrounding the pseudomorphs. (b) Layers of coarse quartz and fibrous quartz perpendicular to the surface. (c), (d) Euhedral carbonate crystal rhombs in the carbonate layers. (e) Thin veins of medium to coarse quartz across the microcrystalline quartz layers. (f) Large pseudomorphed hexagonal crystal filled with the matrix material; notice the concave stepped faces (especially the top and bottom ones). All scale bars are 0.5 mm in width.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 51| Part 4| August 2018| Pages 1050-1058
https://doi.org/10.1107/S1600576718007343
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