This photo material shows a specimen of quartz mineral with advanced crystallization. The quartz surface in white to pale yellow has spread brown or yellowish-brown coloring by iron oxide, and the fine geometric crystal structure of the silica can be obse
The photo material of 'Specimen of Siliceous Rock with Advanced Crystallization' is free material that can be used for both commercial and non-commercial purposes without charge. No membership registration is required, and there are no quantity limits or paid sales. Please read the "Terms of Use", and only if you agree, you may use the S/M/L and cropped images.
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