Ключевые слова: abstract, ammonium, ammonium sulfate, ammonium tetraoxosulfate, background, chemical, chemistry, close up, closeup, colorful, crystal, crystal growth, crystalline, crystallization, crystals, detail, element, facet, fractal, illuminated, iridescent, light, light refraction, macro, magnification, microcrystal, microphotography, microscope, microscopic, microscopy, mineral, mineralogy, multi colored, pattern, polarisation, polarised, polarization, polarized, refraction, research, salt, science, spectral, spectrum, structure, translucent, transparent, vibrant,