A1 miner

1.

The earliest is a kind of network virtual currency. It is characterized by decentralization, anonymity, and can only be used in the digital world. It does not belong to any country or financial institution, and is not subject to geographical restrictions. It can be exchanged anywhere in the world. Therefore, it is used as a money laundering tool by some criminals. In 2013, the U.S. government recognized the legal status of bitcoin, making the price of bitcoin soar

< H2 > extended information:

bitcoin is e-cash similar to e-mail. Both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address. Just like sending and receiving e-mail, the remitter pays bitcoin directly to the other party through a computer or smart phone according to the recipient's address

starting from the essence of bitcoin, the essence of bitcoin is actually a special solution generated by a bunch of complex algorithms. A special solution is one of the infinite (in fact, bitcoin is finite) solutions that can be obtained from the equations. Every particular solution can solve the equation and is unique

many websites for technology players have begun to accept bitcoin transactions. Websites such as mtgox and btcchina, as well as some Taobao stores, can even accept services such as bitcoin exchange for us dollars and euro. There is no doubt that bitcoin has become a real currency in circulation, rather than a virtual currency like Tencent Q coin

2. The ant S9 proced by bitmainland is the most mainstream mining machine on the market, which is famous for its low power consumption and high output. Ant mining machine S9 adopts TSMC's 16 nanometer FinFET process. TSMC comes from the agent factory of iPhone chip, and ant also applies the full custom design scheme on S9. So, this makes S9 have super computing power upgrade, let mining efficiency is higher. S9 adopts the latest generation chip bm1387 (189 chips in total), and the computing power of a single chip reaches 74gh / S. in terms of power consumption, S9 maintains at 0.08w/gh/s. (the power consumption is 0.08w/gh/s at 0.4V core voltage, and the power consumption per T computing power wall is only 100W, which is only 2.4 kwh per day. Rated calculation force: 13.5th/s ± 5%

Xuebao miner A1, miner chip is the core of miner. It is said that bitmine is the source of the whole bitcoin miner instry. Bitmine has its own powerful chip technology as early as the end of 2013. Of course, it also benefits from the joint cooperation and efforts of bitmine and other companies, and Xuebao miner is their own proct. A1 is the world's first customized mining machine, equipped with ASIC chip (bf16btc), the number of chips is as high as 576pcs, the computing power of a single chip is 84.1gh/s, and the overall computing power is as high as 49th / s ± 5%

Z4 adopts Intel al core [email protected] Cup, mining power is 265mh / S (ETH), equipped with independent graphics card 570x8, has 9 fans, and the radiator adopts Intel original radiator, power supply: station flag 2000W power supply, voltage: 12.4-12.6v.

3. Wolf God graphics card is a brand of miscellaneous brand and Shanzhai brand. Anyway, I have never heard of this brand. The worst thing is to buy Mingyu, Gengsheng, Onda and other brand graphics cards. At least they are from regular brands. Which wolf God graphics card do you really want to buy,

4. Of course, digital currency has a future. The future of digital currency is very broad
bitcoin, wikilink, bitcoin cash and Ethereum are all digital currencies. The people's Bank of China started to study digital currency three years ago and is now cooperating with the instry to develop distributed ledger. The central bank has put the issue of digital currency on the agenda.

5. Are you talking about whitenodea1? This miner is good. Unlike bitcoin, it's based on the pos3.0 mechanism
the quantity you can dig every day is your total xwc / xwc mining amount * 2880. The more xwc, the more digging
as for security, the software and hardware of white coin miner are all open source, and Linux open source system is adopted. Linux system is the most famous operating system with innate virus immunity in the world, which is rarely attacked by viruses. Even if it doesn't shut down all year round, the system can run stably, which is suitable for mining machine.

6. Silverfish mining machine is currently pre-sale, delivery date is June 2014, the official website price 62888.00 yuan. The main performances are as follows:
computing power: 60m, overclocking up to 100m
power consumption: 1000W
gridset blade miner
gridset blade miner is now in stock, and the official website price is 18000.00 yuan. The main performances are as follows:
computing power: 5.2m, overclocking up to 6m<
power consumption: 100W
revenue calculation
to calculate the revenue of the two mining machines, the following general indicators are selected as the model:
electricity charge: 0.6 yuan / kWh
difficulty increases, increasing by 2% every 2.5 days Rough estimate)
the middle value of the calculation force of silverfish mining machine is 80m, and the middle value of gridseed blade is 5.6m
for gridseed spot, mining will start on April 11, and for silverfish futures in June, mining will start on June 20. The difference of 70 days is 28 difficulty adjustments
the LTC price is 69 yuan today
the current difficulty is 5808, and the theoretical profit per M computing power is 0.1732ltc per day< The calculation formula is as follows: < br / < br /
the formula is as follows: < br /
Sn < br /
Sn < br /
Sn < br /
Sn < br / < br /
the following formula is as follows: the following formula is as follows: < br / < br / < br /
Sn < br / < br /
Sn < br / < br / < br /
A1 (1-qn) / (1-Q) (1-Q) (1-Q (1-Q) (1-Q) / < br / < br / < br / < br / < br / < br / < br > < br / < br / < br / < the < br / < br / < br / < all < br / < br / < br / < br / < all < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < br / < the number of LTC that can be g in a day
an : the number of LTC that can be g in 2.5 days after the nth difficulty decrease
Q:
ratio of equal ratio sequence, compared with the difficulty decrease times of this model, which is 1-0.02 = 0.98
n:
n:
until the power loss charge, n * 2.5 is the number of days that can be mined
W: power consumption, unit kilowatt
through calculation, the results are as follows:
conclusion
when the difficulty increases by 2% every 2.5 days, Silverfish mining machine can still dig back the cost of LTC and have surplus. Gridseed's blade miner obviously can't recover the cost of LTC, which means that it's better to buy miner than to hoard money
everyone's expectation of difficulty is not the same. It may only increase by 1% every 2.5 days. If you're interested, you might as well calculate it by yourself. Finally, silverfish's mining machinery is futures, and there is a risk of ticket skipping.

7. Brief introction: Shaoguan Changda electromechanical Co., Ltd. was established on April 17, 2014. Its main business scope is sales of motor, fan, recer, frequency converter, transmission, bearing pump, air compressor, hydraulic press, mining machinery, mechanical casting, electromechanical accessories, hardware accessories, etc<
legal representative: Huang Zhen
time of establishment: April 17, 2014
registered capital: RMB 5 million
Instrial and commercial registration number: 440200000059283
enterprise type: limited liability company (solely owned by natural person)
address: Shop A1 and A2, mining machinery market No.1, Shaoguan shaorui Heavy Instry Co., Ltd., Wujiang science and Technology Instrial Park, 6km west suburb, Wujiang District, Shaoguan City

8. Introction: Wuhu Qiaoke Mining Machinery Sales Co., Ltd. was established on October 19, 2010. Its main business scope includes mining machinery and accessories, engineering machinery and accessories, steel, electric power, electronic equipment, auto parts sales, etc
legal representative: Wang Antang
time of establishment: October 19, 2010
registered capital: RMB 500000
Business Registration No.: 340200000103292
enterprise type: limited liability company (invested or controlled by natural person)
address: Room 608, building A1, Xinshidai commercial street, Wuhu City, Anhui Province

9.

1、 The Greenvale nickel deposit is located in North Queensland, tropical Australia, at latitude 19 South °， 145 e °， It is 175km west of Townsville

The most important tectonic unit in Greenville area is the brocken River fault zone (Fletcher et al., 1975). This is a 200 km long NE trending structural belt, which is the contact boundary between the Precambrian metamorphic strata of Georgetown in the West and the Paleozoic sedimentary rocks of brocken River Basin in the East. On the one hand, the fault zone promotes the development of the permeable zone of the alteration zone; On the other hand, it becomes the main channel for the dissolution of altered materials. Fault zones play an important role in the formation of ore deposits. The contour plane at the bottom of the ore body shows that these fault zones control the distribution of graben, and their strike is parallel to the direction of regional structure. In addition, nickel mineralization is still developed in deep parts of some faults

There are three ultrabasic complexes in the Greenville area, namely, the pre Cambrian sanrwood serpentine in the Georgetown formation, the Devonian boylegli complex and the greyklik complex in the brocken River rift. The boylegli complex is closely related to the formation of lateritic nickel deposit

The serpentinized peridotites in the boylegli complex constitute the basement of the Greenville orebody. The rock mass area is about 5.5km < sup > 2 < / sup >, and occurs in the shell of gabbro. The minerals are evenly distributed and there is no evidence of bedding or zoning in the rocks. Serpentinite is dark green to gray, fine and soft. The rock is almost entirely composed of serpentine minerals, followed by a small amount of chlorite and chrysolite, mainly disseminated euhedral particles

The average chemical composition of fresh serpentinite is SiO < sub > 2 < / sub > 37.1%, TiO < sub > 2 < / sub > 0.02%, Al < sub > 2 < / sub > o < sub > 3 < / sub > 0.63%, Cr < sub > 2 < / sub > o < sub > 3 < / sub > 0.39%, Fe < sub > 2 < / sub > o < sub > 3 < / sub > 6.7%, FeO 0.47%, MnO 0.11%, MgO 3 9.2%, H < sub > 2 < / sub > o 12.9%, NiO 0.28%. It shows high nickel content

(2) the Greenville orebody is rich in laterite resies (Fletcher et al., 1975) and covers all types of basement rocks. From the fresh rock to the surface soil, a mature weathering profile with chemical and mineralogical characteristics is formed. This profile is widely distributed in about 1 / 3 of the area above the Greenville serpentine. In other areas, some have been partially or completely eroded. It is speculated that 5.5km < sup > 2 < / sup > serpentinite was once covered by nickel bearing laterite in the whole area, but e to erosion, only 3.3km < sup > 2 < / sup > serpentinite remains. Figure 12-3 shows the surface geology of the deposit and the distribution profile of mineralization reaching instrial grade

the Greenville deposit has a typical red soil profile, which is generally divided into four zones from bottom to top, the lowest is the weathered serpentine zone directly covering the bedrock, the upward is the limonite zone, the lenticular red soil zone, and the top is the soil zone (Chen haoliu et al., 1993)

The density of serpentine red soil zone is reced from 2.7t/m < sup > 3 < / sup > to 1.4t/m < sup > 3 < / sup >. However, the mineral structure and rock structure of basement parent rock are preserved. Under the microscope, the rock is composed of porous network serpentine minerals, which are distributed around clay minerals, along which magnesite and goethite veinlets are developed. In the upper part of the belt, the weathering serpentine is strongly altered, iron is more enriched, and the primary structure of the parent rock graally disappears. The bottom of the weathered serpentine is grayish green or olive gray, with yellow and brown increasing upward, and yellow and brown predominating in the transition to the overlying limonite zone. In the weathering serpentine zone, the nickel concentration is as high as 10 times of that of the parent rock, and generally reaches the highest value at the edge of the zone. The thickness of serpentinite red soil zone is 10m, and the thickness of ore bed is 5m

The limonite laterite zone is characterized by lack of parent rock structure and mineral assemblage. It is mainly composed of goethite, generally massive and brownish yellow. The rocks are often cut by vertical voids and tubes, which extend upward to the overlying pisolite zone. The enrichment of nickel in the zone is usually lower than that in the weathered serpentine zone, but the enrichment of cobalt reaches the peak, which is 25 times higher than that in the primary rock, and the content reaches 0.5%. CR < sub > 2 < / sub > o < sub > 3 < / sub > and MnO are also enriched

There are iron noles in the pea red soil zone, some of which are scattered in the soil, some of which are cemented to form strips, or the iron crust is exposed to the ground. Its color is reddish brown to brown, and the transition between the lower part and the underlying limonite red soil zone is yellowish brown. The noles are lenticular, oolitic or irregular tabular bodies. The size and content of noles generally increase upward, reaching 4.5cm at the top of the zone. The contents of Ni and co decrease from the bottom to the top, and decrease to the background value at the top. The contents of A1 < sub > 2 < / sub > o < sub > 3 < / sub > increase significantly

In the soil zone, thin layer of reddish brown loose resial soil is developed above the deposit. In the middle low-lying area, the depth of reddish brown soil and clay layer can reach 10m, with an average of 3M

Fig. 12-3 geological map and profile of Greenville serpentine body (III) ore type and distribution the ore is divided into weathered serpentine ore, limonite ore and siliceous ore

The weathered serpentine ore is almost half of the ore reserves. The grade of nickel is 1.5% ～ 1.7%, cobalt is 0.05%, iron is 15% ～ 20%, magnesium is 15%, silicon is 30% ～ 40%. The weathered serpentinite ore occurs in the middle of China under the lenticular laterite and limonite laterite, and is exposed on the surface in the South and north margin of the ore body, with an average thickness of 5m

Limonite ore accounts for 1 / 4 of ore reserves, mainly oxidation minerals, with nickel content generally lower than the average value (1.2% - 1.4%). Cobalt is mainly enriched in this type of ore, with an average of 0.25%, most of which are more than 0.5%; The content of iron is high (40% - 50%), magnesium is low (1% - 5%) and silicon is low (15% - 20%). Limonite ore mainly occurs in the middle low-lying area of the deposit, with an average thickness of 3M

Siliceous ore accounts for 25% of ore reserves. According to the structure, it can be divided into block and shell. Massive siliceous ores occur in the upper part of weathered serpentine as irregular bodies, or metasomatize limonite laterite as horizontal strips or lumps. Massive siliceous ores are distributed all over the ore body in the form of lens or strip, with a width of tens of meters. The content of nickel is generally low (3.2% ～ 1.2%), cobalt is lower than the average (0.05% ～ 0.08%), iron is low (15% ～ 20%), the content of magnesium varies greatly, and the content of silicon dioxide is very high (50% ～ 60%). Shell ores generally appear with strong fracture zone, and the width varies greatly from 10 cm to more than 5 m. Shell ore is generally distributed in the whole ore body in linear zone. The ore consists of thin-walled chalcedony shell with a width of 10-50cm, in which strongly altered serpentine or limonite is filled or partially filled. The crust zone contains the ore with the highest nickel content (up to 6%), cobalt content generally above the average value (0.15% - 0.20%), low iron (15%), low magnesium (5% - 10%) and high silicon oxide (40% - 50%)

(4) the enrichment of nickel begins with olivine crystal absorbing metal from magma, followed by nickel bearing olivine fractionation into olivine magma. During the Devonian, tectonic activity along the brocken fault zone resulted in the intrusion of the boiler gully ultramafic pluton. The ultramafic rocks contain about 0.2% nickel. Serpentinization altered these rocks and minerals into hydrous silicates, and then tectonism uplifted the block. Erosion exposed these rocks to the surface and climate of the Tertiary period. The chemical balance of these minerals formed under the deep geological conditions was destroyed, and then they were broken under the physicochemical action of near surface environment. The new conditions are favorable for laterization. The metals released from the decomposed serpentine minerals enter into the laterite system according to their relative solubility, and nickel is enriched to form the Greenville ore body

The main enrichment factors of Greenville laterite nickel deposit may be as follows:

(1) widely distributed serpentine with 0.2% nickel, homogeneous mineralization and highly fractured

(2) on the one hand, the cyclic rainfall causes the change of groundwater level, which makes the rock in the state of saturation and aeration alternation, which is concive to oxidation; On the other hand, the acid water moves downward vertically periodically through the oxidized rocks, and the metals are redistributed e to leaching and precipitation

(3) steep groundwater gradient and lateral water movement caused the migration of soluble elements

(4) suitable temperature for effective reaction

(5) exploration history the nickel bearing laterite in Greenville area was discovered in the process of regional geological mapping jointly concted by the Australian mineral resources bureau and the Greenville geological survey in 1957. At that time, the iron belt in the upper part of Greenville laterite was explored, and the abundance of nickel was found to be more than 1%. In 1966, northern metal exploration company of Australia took nickel as one of the exploration projects, and Greenville was listed as the key prospecting target area. By comparing this area with nickel deposits in New Caledonia, the possibility of nickel rich silicate zone under gossan was proposed. The company's geologists confirmed the existence of nickel ore belt through field verification. The geologists picked up a sample from an outcrop in the zone, and the nickel grade was over 3%. Subsequently, more than 5000 meters of drilling, exploration wells and a large number of trench sampling were carried out. In 1969, the ore reserve was 40 million tons, with an average Ni content of 1.57% and CO content of 0.12%; In 1990, 8 million tons of resources, Ni 1.357% and co 0.11% were obtained

New Caledonia is an island country in the northeast of Oceania, with a length of 400km in the northwest and 48km in the northeast, covering an area of 1900km. The island is an island arc formed by the subction of the Pacific plate to the Australian plate after Mesozoic. The strata in the area are mainly ophiolite suite, volcanic rocks and clastic sediments of Cenozoic era. 75% of the island area is ultramafic mafic rock series. There are numerous nickel ore procing areas, which are mainly distributed in the east coast and west coast. More important are nepoui and Poum on the west coast, poro, kouaoua and thio on the east coast, and nickel deposits near Noumea, the capital. The nickel resource is over 45 million tons

The nickel deposit in New Caledonia was discovered in 1864. New Caledonia was the most important nickel procing area in the world before the Sudbury nickel mine was exploited in Canada. At present, the laterite nickel mine has retreated to the secondary position e to the large-scale exploitation of nickel sulfide in the world, but the nickel proction of New Caledonia still ranks the fourth in the world

Most nickel deposits in New Caledonia are lateritic nickel deposits developed on ultramafic rocks. The rock types of the bedrock are mainly pure peridotite and harzburgite. These rocks are mostly intruded into the Cretaceous and older sedimentary rocks, and the age is Paleogene. Serpentinization is the result of hydration of ultramafic minerals in the rocks ring emplacement, which has nothing to do with modern topography and weathering

(2) the serpentinite outcropped in the lateritization section of New Caledonia has experienced strong weathering since the Paleogene, resulting in the formation of serpentinite