Alkali feldspar is typified by orthoclase, microcline, orthoclase perthite, and microcline perthite, with crystal shapes ranging from anhedral to subhedral. Orthoclase perthite and microcline perthite ...
Boron is a micronutrient for plants required for several biochemical processes ( Cakmak and Romheld, 1997). Boron deficiency is a widespread problem in relatively humid areas, especially in sandy ...
Close up rotating filming of uncut emerald gem crystal jewellery. Rough precious minerals shots. Macro shooting of raw fine gemstone ready to be cut. Trinket jewelry fortune, green color stone edges.
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