Formation of agate
The history of agate is very far away. About 100 million years ago, underground magma spewed out a lot due to changes in the earth's crust. When the lava cooled, steam and other gases formed bubbles. The bubbles are sealed when the rock freezes to form a number of holes. A long time later, the hole was immersed in a solution containing silica to condense into a silica gel. The fusible component of the iron-containing rock enters the silica gel, and finally the silica crystallizes into agate.
Introduction to agate
Agate is also a code for agate, agate, horse brain, etc. It is a kind of chalcedony mineral, often a band-like block mixed with opal and cryptocrystalline quartz, hardness 6.5-7.5 degrees, specific gravity 2.65, color is equivalent There are levels. Agate is usually translucent or opaque. The original form of trigonal crystal system. It is often densely packed to form various structures, such as breast, grape, tuberculosis, etc., which are usually concentric structures. Commonly used as accessories or play.
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