Structure and production of chrysoberyl?

The birthstone of this period brought the structure and production of emeralds. The crystal system of chrysoberyl belongs to orthogonal crystal system, that is, oxygen ions are closely arranged in hexagonal shape, beryllium ions are located in tetrahedral coordination center, and aluminum ions are located in octahedral coordination center. Then, follow Bian Xiao to learn more!

The crystal system of chrysoberyl belongs to orthogonal crystal system, in which oxygen ions are closely arranged in hexagonal shape, beryllium ions are located in tetrahedral coordination center and aluminum ions are located in octahedral coordination center. Among the common natural gemstones, the first hardness is diamond, the second is corundum, and the third is gold emerald, 8.5?

The crystal system of chrysoberyl belongs to orthogonal crystal system, in which oxygen ions are closely arranged in hexagonal shape, beryllium ions are located in tetrahedral coordination center and aluminum ions are located in octahedral coordination center. Among the common natural gems, the first hardness is diamond, the second is corundum, the third is emerald, which is 8.5, and topaz is 8.

Most emeralds are tricolor, that is, different colors can be seen from different directions, which is one of their characteristics, which is caused by ring twins or wheel triplets.

Emerald is the product of pegmatite growth. Low-density lava is formed by melting the earth's crust and spewing out of the ground. When lava solidifies, the water content will increase. When beryllium and aluminum in minerals in lava come into contact with surrounding substances, emeralds will be produced at the contact between pegmatite and ultrabasic rocks. The formed emeralds are hard, dense and corrosion-resistant. With weathering, emeralds will also be brought into residual placer. Metamorphic rocks are rare because beryllium and chromium generally do not appear in ores at the same time. The cause of discoloration effect is the existence of chromium.

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