Meteorite, also known as "meteorite", is an unburned stone, iron or a mixture of stone and iron that is quickly scattered on the earth's surface or other planets by world meteors or dust fragments that leave the original orbit outside the earth.
Classification of meteorites:
Meteorites are generally divided into four categories according to their internal iron and nickel metal contents: stone meteorites, iron meteorites, stone iron meteorites and glass meteorites.
Characteristics of meteorites:
Meteorites burn and wear in the atmosphere, and their shapes are round and angular. Melting pit: There are pits with different sizes and depths on the surface of meteorites, that is, melting pits. Many meteorites also have shallow and long gas marks, which may be left by the fall of low-melting minerals. Specific gravity: Because meteorites contain iron and nickel, the specific gravity of iron meteorites can reach 8, and stone meteorites often contain 20 iron and nickel, which is higher than ordinary rocks. Magnetism: All kinds of meteorites have different intensities of magnetism because they contain iron. Weathered meteorites are not magnetic, so they are not meteorites. Stripes: Meteorites generally have no stripes or only light gray stripes when colliding on unglazed porcelain plates, while iron ore stripes are black or brownish red to show the difference.
Meteorite transaction record price:
Stone meteorite? 662g？ 2365438+700,000 yuan
Stone meteorite? 1864g？ 9.32 million
Iron meteorite? 2566g？ 6 145000
Stone iron meteorite 3695g? 184.75 million
Glass meteorite 1200g? 120,000
Guangzhou Guyuan Exhibition Co., Ltd. collects such collections on a global scale; Meteorite judgment, evaluation and trading hotline: Teacher Huang 185 2056 0 123 (same as WeChat)
Then we should be curious. With so many stones, how can we know if they are meteorites?
The following shows us whether a sample is a meteorite, which can be considered from the following aspects:
1. Surface melting shell: The meteorite once passed through the dense atmosphere on the falling ground, and collided with the atmosphere during the falling process, melting its surface and forming a thin melting shell. Therefore, all newly fallen meteorites have a black molten shell with a thickness of about1mm.
2. Air marks on the surface: In addition, due to the interaction between meteorites and airflow, many air marks will be left on the surface of meteorites, just like fingerprints pressed by fingers.
3. Internal metal: Iron meteorites and stone iron meteorites are composed of metallic iron, which has a high nickel content (5- 10%). There are also metal particles in chondrites, and fine metal particles can be seen on the surface of fresh cracks.
4. Magnetism: Because most meteorites contain iron, 95% of meteorites can be attracted by magnets.
5. Sphere: Most meteorites are chondrites (accounting for 90% of the total), and there are many tiny silicate spheres in these meteorites, which are called chondrules. A round chondrite can be seen on the fresh rupture surface of chondrite.
6. Specific gravity: The specific gravity of iron meteorites is 8g /cm3, which is much larger than that of ordinary rocks on the earth. Because chondrites contain a small amount of metals, their specific gravity is also very heavy.
Since it is an alien object, we must want to know whether meteorites are valuable or not and whether they are worth preserving.
Known as the "strange stone", meteorites are rare and precious, and some people naturally like to preserve them. In recent years, there has been an upsurge of meteorite preservation in China. In the past three or four years, not only the price of meteorites soared, but also the domestic meteorite preservation shopping malls gradually took shape. Four or five years ago, the economic value brought by meteorites was not well known. "Nobody knows, nobody cares, nobody asks, nobody cares." Xu Shutao, a famous meteorite preservation enthusiast in Shandong Province, used this sentence to describe the meteorite preservation shopping mall a few years ago. It is understood that in the 1990s, there were only about 200 people involved in meteorite trading in the world, but now the number of participants has increased to 1 10,000. The ever-expanding meteorite preservation circle, coupled with its rarity, has made the global price of meteorites climb from a few dollars per pound to a huge number comparable to diamonds.
In the world market, meteorites are bought and sold at high prices. Ordinary meteorite samples cost tens of thousands to hundreds of thousands of dollars per kilogram, while rare meteorites like Mars and the moon cost tens of millions of dollars per kilogram. Even ordinary glass meteorites are valuable. Some media said that the most expensive is the moon meteorite, which can sell for 2,500 US dollars a gram, with an average price of 500 US dollars a gram, much higher than the price of gold. Then there is the Martian meteorite, which costs $200 per gram.
Like other preserved collections, in meteorite preservation, in addition to their own factors, the most important thing for the preserver is to be recognized by the shopping mall. At a meteorite auction held in 2007, a meteorite from Georgia, USA, was also sought after by people. This meteorite fell into a local mailbox on 1984 and was finally sold for $83,000. In that auction, hundreds of thousands or even millions of high-quality products were auctioned.
The value of a meteorite lies not only in whether it is a meteorite or not. Thousands of meteorites land on the earth every year, most of which are in desert, ocean and other sparsely populated places. The value of a meteorite depends on its composition and structure. Need scientific inspection. If it contains rare or undiscovered elements or has a special molecular structure, it has high scientific research value. Otherwise, it is just an ordinary stone. At the same time, if it's a meteorite or something, it's best to keep it, because it's very radioactive.
Judging from the current global preservation mall, the price system of meteorites has basically taken shape. Moon meteorites are the most sought after. The retail price of shopping malls is generally around $500/gram, and the most expensive is $25,000/gram. The price of Martian meteorites is generally more than 200 dollars/gram, the price of iron meteorites is in the third place, and the price of shopping malls is generally between 15 dollars and 150 dollars/gram. As for iron meteorites and stone meteorites, the prices are very low, generally between 1 and $30/g. In the ranking of unit price of smuggled goods in the world, meteorites have beaten diamonds and ranked first.
Guangzhou Guyuan Exhibition Co., Ltd. collects such collections on a global scale; Meteorite judgment, evaluation and trading hotline: Teacher Huang 185 2056 0 123 (same as WeChat)
Guangzhou Guyuan is now a listed company in China, collecting land for shopping centers. All business forms of our company completely exceed national laws and regulations, and there is no judgment fee, no storage fee and no auction fee. It has been praised by the majority of Tibetan friends as "three non-service products" in the auction industry. We take charging 65,438+00% commission money after the transaction as our high pursuit policy, and promise lifelong service (100% to help you realize quick liquidation). According to the calculation of professional authorities, we can be sure that we will adhere to this as the company's strategic policy and we will certainly accomplish it. We need your participation. Let's do our best together to complete our preservation and enjoyment! If you have any good collectibles to buy or sell, be sure to call me at once.
On the national list, Shoujia's failure to complete the transaction is judged free of charge-no auction fee, no storage fee insurance-Guangzhou Guyuan Exhibition Co., Ltd. selected collection rules: strict, cautious, near-free judgment (authoritative judgment expert), which meets the requirements of auction-free. Traditional Mid-range Collection —— High-end Collection of Large-scale Art Auction in Spring and Autumn Period —— Rare Collection of Boutique Special Exhibition —— Introduction to Collection magazine. Guangzhou Guyuan Exhibition Co., Ltd. cooperated with state-owned central enterprises, that is, Guangzhou Civilized Property Rights Exchange built a convenient and fast trading platform (the national cooperative unit Guangzhou Civilized Property Rights Exchange), and Guangzhou Bangshou Regular Auction Company and Guangzhou Civilized Property Rights Exchange jointly listed for sale. In order to make a deal! The average annual turnover is about 5805 pieces, with a large volume of transactions and a wide mobility of buyers.