![]() ![]() In the present study, we suggest a two-step method for discriminating geographical origins of nephrite based on the rare earth element (REE) contents combined with chemometrics. Nephrite is a high-valued gem material, whose geographical origin determination is a topic of interest to both consumers and producers since the geographic origin determines its price and reputation. In addition, this study also provides insights into the genetic discrimination, mineral exploration, and occurrence characteristics of nephrite jade deposits as well as the evaluation and identification of nephrite jade quality. Our study highlights that the nephrite jade deposits in China originally formed during multiple tectonic stages related to the interactions between hydrothermal fluids and metamorphism under subduction accretion-and collision orogenesis-related settings. In contrast, the orebodies of WJ-type nephrite jade are usually hosted at the contact zones between the dolomitic marbles and intermediate-felsic or mafic intrusive rocks, which were produced through metamorphism-metasomatism during post continent-continent collision, such as the Kunlun orogenic belt with about~1,300 km Hetian nephrite belt, and the eastern nephrite jade deposits along the Pacific Ocean. This type of nephrite jade mainly formed through the late auto-metamorphic metasomatism of serpentine or the spontaneous crystallization/precipitation along suture/shear zones that acted as pathways to migrate Ca-rich fluids during orogeny. The GJ-type nephrite deposits predominantly occur in ophiolite/ophiolitic mélange suites or are embedded into ultramafic serpentine jade orebodies. The compiled data suggest that the major nephrite jade deposits in China can also be generally divided into green jade-type (GJ-type) and white jade-type (WJ-type) which covers different species, but most of them belong to the latter. Here, we investigate the major nephrite jade deposits in China to decipher their gemological and mineralogical characteristics, spatial-temporal distribution, and mineralization processes as well as to identify their geological settings and gemological properties, via integrating published geochronology, major and trace elements as well as H-O isotopes. ![]() However, these deposits have not been systematically summarized to date. Also, they are not intended as a substitute for medical care.The nephrite jade deposits of different tectonic units in China exert significant commercial quality, which have attracted wide attention. Stone properties and descriptions are for informational purposes only and do not offer any guaranteed outcomes. Do not use hot water or salt water to clean them. Many stones are susceptible to fading, and they should be kept out of direct sunlight. Colors may vary with individual monitors. Be sure to check all photos, including the zoom feature, for details about a particular stone. Stones listed as natural, raw, or rough may have some imperfections and inclusions. The crystals can also be used for personal meditation and to achieve balance and enlightenment. Many people claim to be able to access this information from their record keeper crystals. These crystals are said to contain ancient knowledge and profound secrets of the universe. Record keeper crystals usually have raised or incised triangles on one or more of their faces. It is similar to lodolite metaphysically, and is a good stone to use for lucid dreaming. It is a powerful healer and is often used by reiki practitioners. Gold hematite quartz is a strong amplifier and can help to manifest your intent. It calms emotions such as anxiety and and can assist in raising self esteem. It gives a sense of tranquility and order that aids in working out differences between people as well. ![]() Hematite quartz can help with problem solving by stimulating the creative thought process. The crystals have a natural gold color that comes from the combination of hematite and water in the cavity where they grew. Gold hematite quartz is found in Minas Gerais, Brazil and also Africa. They are usually black or brown in color and often have a metallic luster. The term dendrite quartz refers to the branch like inclusions of manganese oxide that form in the crystals. It has iron oxide hematite inclusions and the dentritic foliage patterns of black manganese. The crystal has a record keeper triangle on the face and natural prisms. This comes with a 24 inch silver filled chain. A polished round cabochon of natural dendrite quartz set inside a silver aluminum wire spiral.
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