![](http://www.alamy.com/thumbs/6/DEB19B23-7CE6-4BCA-9829-8405360F6C8F/A5K3NF.jpg)
ammonium persulphate crystals viewed with microscope using cross polarization lighting technique
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Photo credit: © paul ridsdale pictures / Alamy / Afripics
License: Royalty Free
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Keywords: ammonium, bright, chemical, chemistry, clear, colourful, cross, crystal, form, inorganic, magnification, magnify, material, microscope, mineral, persulphate, polarization, polarize, resource, science, scientific, shape, shine, spectrum, structure, study, substance, sulphate