Peace is the most practical and intimate of all blessings. Every heart that walks through fireworks is in a hurry, just to find a safe place. The size is large enough, the water is beautiful, and the green flowers are slightly dotted, which is very eye-catching and beautiful. There is no time.
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Jade, also known as jadeite, jadeite and Burmese jade, is a kind of fibrous aggregate jade, which is composed of pyroxene minerals mainly composed of jadeite minerals. It is translucent to opaque or rarely transparent.
Formation of jadeite
Jadeite is mainly composed of jadeite or jadeite, sodalite (sodalite) and sodalite (omphacite), and [1] may contain amphibole, feldspar and chromite. Common varieties are Laokeng jadeite, ice jadeite and water jadeite.
Jadeite is a dense and massive aggregate formed by countless fine fibrous mineral crystallites, mainly jadeite. There are four main views on the formation of jadeite in nature:
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.