Which country's brand does Ethereum legal currency endorse

1. Dream B, 1200W = 100 yuan, this is from Xiannv Lake District, Jiangxi Province

2. QQ flying car, cool money; Through the line of fire, GP coin; Dungeons and warriors, gold coins; Go kart, gold coin; Dream journey to the west, silver;

3. In the representation of domestic steel grades, the initial number generally indicates the carbon content. For example, the carbon content of 25mng steel is about 25.

4. Wang Fuzhong is famous for his daring to speak. The point is sharp. Although some views are not accepted, many are valuable

5. Economy is the creation, transformation and Realization of value; Human economic activities are the activities of creating, transforming and realizing values to meet the needs of human material and cultural life. Economics is a theory that studies the law of human economic activities, that is, the law of value creation, transformation and Realization -- the law of economic development. It is divided into two types: Political Economics and scientific economics. According to the interests of the class represented by political economics, in order to highlight the status and role of a class in economic activities, it spontaneously studies the law of value or economic law from a certain side. Scientific economics consciously studies the law of value or economic law of human economic activities as a whole with scientific methods. New normal economics is scientific economics. The core of economics is economic law. In the view of new normal economics, the optimal allocation and optimal regeneration of resources are only the expansion and specific performance of economic laws. The object of economics should be the economic laws and economic essence behind the optimal allocation and optimal regeneration of resources, rather than stay at the level of optimal allocation and optimal regeneration of resources. It is political economics rather than scientific economics that stays at the level of optimal allocation and regeneration of resources. In order to study the law of economic development, we must study the economic phenomenon as a whole. Macro economy and micro economy are two symmetrical aspects in a unified economy. Therefore, in the framework of new normal economics paradigm, there is a distinction between macro economy and micro economy, not between macro economy and micro economy; Political economics always divides economics into macroeconomics and microeconomics.

6.

Traditional Chinese medicine has been handed down for 5000 years. Since Shennong's personal taste of herbs, traditional Chinese medicine has appeared, but it can really be called "traditional Chinese medicine" and become an academic category, only from the "Qihuang technique"

as a medical category, traditional Chinese medicine has been questioned for thousands of years. After all, it is a big school. It should be a pride and strength to dare to accept questions. However, Wang Fuzhong, an economist, has almost no in-depth understanding of traditional Chinese medicine and recklessly says that "traditional Chinese medicine is useless". This is not a question at all, but a simple abuse and slander

7. It's a listed company in the UK, and I've also invested in etcoin here. What they do is really good. They can really get profits by investing in it.

8. I haven't heard of the project you're talking about. At present, virtual currency is legal in China. China's central bank clearly defines bitcoin as a special Internet commodity, which people can buy and sell freely at their own risk, denying its monetary attribute

this is not illegal if it is a virtual currency, but it is illegal if it is used to do illegal things. The project you mentioned is similar to the pyramid schemes previously exposed, such as spark entertainment bitcoin, Porter coin schemes, etc. They are all pyramid schemes under the guise of bitcoin, but they have nothing to do with bitcoin.

9. Hello, similar to network virtual pyramid scheme, it uses virtual currency, which is not recognized by the state. It's just that people from each other. It's just speculation, not real investment. It's risky and cautious

10.

1. Geological background

the Grasberg porphyry copper gold deposit is located in the tropical area of central Irian Jaya Province, Indonesia, with an altitude of more than 4200m. Skarn type copper gold deposits such as etzberg and East etzberg are known about 3km southeast of the deposit

The

orebody occurs in a polyphase monzonitic diorite porphyry with an area of 3km < sup > 2 < / sup > formed in Pliocene, and its upper part intrudes into Eocene Oligocene limestone. Like the oktedi deposit in the East, the limestone is a part of the fold thrust belt formed ring the collision between continent and island arc in the late Cenozoic. During the mineralization of high grade plutonic chalrite and associated gold, potassium silicate altered porphyry appeared. The porphyry is characterized by strong stockwork and metasomatism between quartz and magnetite. The gold content increases downward to a depth of at least 1300m. Although the limestone around the upper part of the stock is only marble, it is partly transformed into skarn with copper and gold in the deep part. In the area with thickness less than 5m, there is little supergene, and the leaching gossan is developed, and the underlying chalcocite is enriched

The ore reserves of the Glasberg porphyry skarn type copper gold deposit are increasing. By the end of 2000, the total proved and probable reserves in the area increased to 2.51 billion tons, with an average grade of 1.10% copper and 1.04% gold × 10 < sup > - 6 < / sup >, Ag 3.40 × 10 < sup > - 6 < / sup >, that is, there are 27.61 million tons of copper, 2610 tons of gold and 8500 tons of silver. In addition, there are 1.395 billion tons of geological resources, including 6.9 million tons of recoverable copper and 700 tons of recoverable gold

Exploration and discovery in 1936, Dutch geologist J.J. dozzi discovered the etzberg deposit ring his mountaineering expedition, which is called "Bigi mountain" locally. At that time, he identified the etzberg skarn orebody at the surface, in which sulfide and high-temperature biotite filled the porphyry of the rock tube. Etzburg is basically composed of rock plants, with a thin soil layer on the surface and herbs growing on it, which is in sharp contrast to the surrounding bare limestone landscape. Therefore, J.J. dozy named the deposit as etzberg. In 1939, he made a report, but it did not attract people's attention. However, in 1959, J.J. dozzi's report was mentioned in the literature review of East Borneo company in the Netherlands, which attracted the attention of Freeport company in the United States. In 1960, Freeport company organized an exploration team to re investigate and sample the etzberg copper deposit, which confirmed the existence of the ore body. However, e to political and technical problems, the drilling evaluation of supergene outcrops in the prospective area has been delayed. It was not until 1967, when Indonesia promulgated a new foreign investment law, that the company signed a contract with the Indonesian government for mineral exploration in the area. In 1968, the ezberg skarn deposit was proved by drilling, with ore reserves of 33 million tons and copper grade of more than 2%. In the second half of 1972, Freeport company mined the copper gold silver deposit in this open pit

Fig. 8-15 distribution map of copper gold deposits in etsberg area, Irian Jaya Province, Indonesia (quoted from G.D. MacDonald and L.C. Arnold, 1994)

in 1973, after the above-mentioned open pit mine was put into operation, Freeport company carried out exploration, including drilling work, in its periphery, in order to find another low-temperature hydrothermal copper gold skarn type deposit. From 1974 to 1976, significant copper mineralization was discovered by drilling 1.6km to the east of the open pit. In 1977, a 1200 m level hole was drilled and completed in the middle of 1978. Later, detailed exploration was carried out in the level hole to explore the East etzberg deposit (East Bigi mountain) (Fig. 8-15). The ore body is arc-shaped, 700m long, 150m wide and 350m long. It also belongs to skarn type deposit. The main ore controlling structure is a NW trending reverse fault and 3 pre ore faults and fissures. The four groups of structures formed highly fractured zones in dolomite and argillaceous rocks, and brecciation provided conditions for skarn mineralization

From the late 1960s to the 1970s, the geologists of Freeport carried out many investigations on the Glasberg ore spot and considered it to be a porphyry copper deposit system. Although quartz and magnetite mineralized veins are exposed in the relatively flat area around the Glasberg mountains, there is no enrichment of chalcocite under the thin-layer leaching gossan in the whole Glasberg mountains. Therefore, geologists believe that this mineralization has no economic value. At that time, it was believed that the maximum copper content of a plutonic porphyry copper deposit was less than 0.8%. In the Glasberg mountains, the surface copper content ranges from 200 × 10^-6～5000 × 10 < sup > - 6 < / sup >; In 1985, the copper content of a key borehole at the foot of Glasberg mountain was 0.3% ～ 0.5%

In 1987, the geologists of Freeport company in Indonesia made a further investigation on the prospect of Glasberg deposit and obtained a promising gold content of 1.5% in cuttings × 10^-6～2.5 × 10 < sup > - 6 < / sup >. In order to test the potential of gold resources and prove that the high content of gold is not caused by supergene enrichment, we overcame considerable difficulties in 1988. After installing drilling equipment on the top of the mountain with helicopter support, we drilled the first hole below the gold rich outcrop. The shallow inclined borehole penetrates the gold bearing layer, in which the copper content is more than 1%. The drilling angle of grs-3 is steeper, but it also penetrates the porphyry layer with more developed mineralization. The drilling angle of grs-4 borehole is vertical, and the 600m core obtained is mainly plutonic rock, with an average copper content of 1.65% and gold content of 1.4% × 10^-6

The mineralization of high-grade porphyry Cu Au deposits in the Glasberg rock tube is very clear by this time. Drilling work continues, with many delineation and development boreholes intersecting in the underground roadway system. In the second half of 1989, Freeport company began open-pit mining. Its daily output has been expanded to 105000 tons, and Freeport is discussing the issue of further increasing the output

Summary the discovery of Glasberg porphyry copper gold deposit is the result of continuous exploration in etzburg area by Freeport company in the past 28 years, which should be attributed to the recognition of three kinds of copper mineralization ring mountaineering investigation 25 years ago. Recent evaluations of several prospective areas in Glasberg show that the geochemical anomalies of cuttings are sufficient to eliminate the prejudice against the plutonic porphyry copper deposits. The history of Glasberg exploration shows the importance of geological literature review, and also shows that the generally accepted grade tonnage models of ore deposits cannot be blindly accepted