It is generally believed that the native agate is formed from the residual hydrothermal fluid of the magma. This hydrothermal fluid is filled in the voids of volcanic rocks such as basalt and rhyolite, and is formed into agate balls or agate veins due to the shape of the voids. After the action of natural forces, the original agate falls out, and then passes through the flash flood, the water is carried, and the pebbles are ground. This is the rain agate stone we see in the gravel layer. Yuhua Stone is known for its natural beauty and its beautiful natural beauty. Its ring pattern is made up of silica gel around the volcanic rock voids and cavities, starting from the inner wall and being deposited layer by layer from the outside to the inside. Periodic diffusion of colored ions and compounds often occurs during their growth.
The main chemical composition of the original agate is silica, followed by a small amount of iron oxide and trace amounts of elements and compounds such as manganese, copper, aluminum and magnesium. They have different pigments, such as red for iron, blue for copper, purple for manganese, yellow translucent for silica colloidal stone, emerald with green minerals, etc.; due to the dissolution of these pigment ions into dioxide The type and content of silicon hydrothermal fluid are different, so it shows a variety of shades, shades and colors, making the rain stone and its beautiful and beautiful.
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