The second view is that primary albite is decomposed into jadeite during regional metamorphism; Or that albite first formed glaucophane schist with low metamorphic degree and then further metamorphic jadeite under the action of compressive and torsional stress and low temperature caused by plate collision.
The third view holds that granite veins and light gabbro veins were formed by metasomatism under the pressure of 12 ~ 14 kPa under the action of hot water solution with high sodium chemical potential.
According to the discovery of water-methane-jadeite three-phase inclusions in jadeite rocks, the fourth view is that jadeite is crystallized from the silicate melt of jadeite, which comes from the alkali-containing pyroxene layer widely existing in the mantle of 300 ~ 400 km.
Extended data:
The history and culture of jadeite;
In the long years, our ancestors created many patterns that yearn for a better life and pursue good luck.
These auspicious patterns combine the appreciation habits of working people and reflect people's kind and healthy thoughts and feelings, so they are widely circulated in society and deeply loved by people.
Auspicious patterns have been widely used in jadeite in past dynasties. "Dai Jin is rich, Dai Yu is safe." The auspicious patterns carved on jade are vivid and diverse. These materials include people, utensils, animals, plants and so on. The content of the performance includes praying for good luck, peace, happiness, having many children, and promoting to a higher position and making a fortune. Jade is a treasure in the hands of China people, and it is also the soul in their hearts.
Gold and silver are valuable, and jade has a life. The categories of jadeite carving are Jade Buddha, Ruyi, Ping 'ankou, Bamboo Knot, Longevity Lock, Fudou, Brave and so on. Rich in meaning, such as a hundred years of harmony, good luck, long life, first place, third place, good luck and good luck.
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