陨石精选：探索宇宙的神秘礼物

现实版来自星星的你，定向陨石，由于宇宙的奥秘无穷，这些陨石就成了神秘的代表藏品，外天空 的石头也受热捧，市场上一块小小的陨石价格就已经能堪比黄金了。市场上也有这么一群人，他们是职业陨石猎人，也叫猎星人。在中国，他们的工作便是在深山老林、戈壁荒漠中寻找陨石，并高价出售谋取暴利。寻宝的过程充满险阻，但一夜暴富的故事又不断施加着诱惑。

陨石是来自地球以外太阳系其他天体的碎片，绝大多数来自位于火星和木星之间的小行星，少数来自月球和火星。陨石根据其内部的铁镍金属含量高低通常分为三大类：石陨石、铁陨石、石铁陨石。而橄榄陨石是石铁陨石中的最稀有最珍贵的一种，全球发现量不到1%左右。

所谓定向陨石分为两种，一种是垂直定向另外就是斜定向，垂直定向具备有船底卷边只有一面有熔蚀坑。斜定向一般呈锥形整体有熔流线。

定向陨石

我们都知道陨石通过外表识别一般是以熔壳、气印为依据，熔壳是陨石经过高温熔融产生的1mm左右黑色或深褐色壳，气印一般多指陨石外表像拇指按压过的印痕。但在很多发现或目击陨石中，很多陨石的气印都不是特别明显规整，许多都是部分气印或类似于气印，这也正常，毕竟气印是陨石在坠落过程中根据外在因素随机形成。

陨石是太阳系的“考古”标本，根据对陨石中铀、钍、钾等元素的同位素组成的测定，可以推算出：太阳系元素的年龄为54±4亿年，元素形成后至太阳星云凝聚之间的“间隔年龄” 为1—3亿年，太阳星云开始凝聚是在距今47 亿年前，太阳系中各类陨石凝结的年龄大约是 45—46亿 年，这也可以作为太阳系各行星形成的年龄。由此可见，研究陨石对太阳系演化的年代学的研究有多么重要的意义。 陨石在太阳系茫茫空间运行过程中，有可能由于受到碰撞而破碎，碎片直接暴露在宇宙射线之下，会形成许多种宇宙成因核素。对陨石中各种宇宙成因核素的研究， 可以为我们探讨银河系宇宙射线的成分、能谱，认识宇宙线的长期变化规律，弄清高能核反应的特点，故而，陨石又被称作宇宙空间的天然“探测器”。

陨石表面蜂窝状融壳极为明显，掉落时与地球撞击，地球的泥沙混入其中融为一体，这是陨石的明显特征，融壳越好价格越高。

可见陨石气印还具有消融坑穴状或深洞状,比如美国的威拉姆特大铁陨石或阿根廷查科大铁陨石具有的凹坑与孔洞。一些具有气印的陨石,即是其在大气层外具有的一些外貌特征在坠落过程中.与氧气产生摩擦燃烧，高温之下一些熔点较低的金属被风吹走，留下了一道道凹痕，再撞击地球后，沙硕进入陨石内部，形成了大小不一的孔洞，这件陨石特征明显，表现十分开门。

定向陨石分为两种,一种是垂直定向另外就是斜定向,垂直定向具备有船底卷边只有一面有熔蚀坑。斜定向一般呈锥形整体有熔流线，这块陨石，有明显的磁性，呈现明显的锥形，且熔蚀坑明显，融壳也十分的漂亮。

这块陨石外形美观，融壳明显，气印经典，一头尖一头宽大，属于少有的定向陨石。素来陨石就被视为吉祥之石：有时来运转之意，更有天降时运的好兆头，在这个人民币快速贬值的时代，商人更愿意投资稀有品，正所谓千金易得，一宝难求。这块陨石外观品相极好，做个底座就能当摆件，观赏价值以及收藏价值极高。

英文翻译：The real version of you from the stars, directed meteorites, because the mystery of the universe is infinite, these meteorites have become a mysterious collection on behalf of the sky stone is also hot, a small meteorite price on the market has been able to be comparable to gold. There's also a group of people on the market, professional meteorite hunters, also known as star hunters. In China, their job is to find meteorites in the mountains and gobi desert, and sell them at a high price to make a huge profit. The treasure hunt is fraught with dangers, but the story of instant wealth constantly seduces.

Meteorites are debris from other bodies in the solar system beyond Earth, the vast majority from asteroids located between Mars and Jupiter, and a few from the moon and Mars. Meteorites are usually divided into three categories according to the content of iron and nickel metal inside them: stone meteorites, iron meteorites and stone iron meteorites. The olivine meteorite is one of the rarest and most precious stone iron meteorites, which is found in less than 1% of the world.

The so-called directional meteorite is divided into two kinds, one is vertical orientation and the other is oblique orientation, vertical orientation has the bottom of the ship with only one side of the corrosion pit. Oblique orientation is generally conical as a whole with molten streamline.

Directional meteorites

We all know that the appearance identification of meteorites is generally based on the molten shell and gas imprint. The molten shell is about 1mm black or dark brown shell produced by the high-temperature melting of meteorites. The gas imprint generally refers to the impression that the appearance of meteorites is like thumb press. But in many meteorites found or witnessed, the air marks of many meteorites are not particularly obvious and neat. Many are partial air marks or similar to air marks, which is normal, after all, the air marks are formed randomly according to external factors during the fall of meteorites.

Meteorites are the "archaeological" specimens of the solar system. According to the determination of the isotopic composition of elements such as uranium, thorium and potassium in meteorites, it can be calculated that: The age of the elements in the solar system is 54± 400 million years, and the "interval age" between the formation of the elements and the condensation of the solar nebula is 100-300 million years. The solar nebula began to condense 4.7 billion years ago, and the age of the condensation of various meteorites in the solar system is about 4.5 to 4.6 billion years, which can also be used as the age of the formation of the planets in the solar system. Thus, the study of meteorites is of great significance to the study of the chronology of solar system evolution. Meteorites in the vast space of the solar system, it is possible to be broken by collisions, fragments directly exposed to cosmic rays, will form many kinds of cosmic nuclides. The study of various cosmogenic nuclides in meteorites can help us explore the composition and energy spectrum of cosmic rays in the Milky Way galaxy, understand the long-term variation of cosmic rays and make clear the characteristics of high-energy nuclear reactions. Therefore, meteorites are also known as natural "detectors" in the universe.

The honeycomb melting shell on the surface of the meteorite is very obvious. It hits the Earth when it falls, and the earth's silt is mixed into it. This is the obvious feature of the meteorite.

Visible meteorite airprints also have ablation pits or deep holes, such as the pits and holes of the Willamte iron meteorite in the United States or the Chaco iron meteorite in Argentina. Some meteorites with airprints, that is, some of the features of their appearance outside the atmosphere in the process of falling. Friction combustion with oxygen, under high temperature, some metal with low melting point was blown away by the wind, leaving a series of dents, and then hit the Earth, Sand into the interior of the meteorite, the formation of holes of different sizes, the characteristics of the meteorite is obvious, performance is very open.

Directional meteorites are divided into two kinds, one is vertical orientation and the other is oblique orientation. Vertical orientation has a bottom edge and only one side has a corrosion pit. Oblique orientation is generally conical as a whole with melting flow lines. This meteorite has obvious magnetism, showing obvious conical shape, and the corrosion pit is obvious, and the melting shell is also very beautiful.

This meteorite has a beautiful appearance, obvious melting shell, classic gas printing, a tip and a wide head, which belong to a rare directional meteorite. Meteorites are regarded as auspicious stones: sometimes it means a turn of fortune, but also a good omen of fortune. In this era of rapid devaluation of THE RMB, businessmen are more willing to invest in rare products, as the so-called gold is easy to get, a treasure is hard to find. The appearance of the meteorite is very good, and the base can be used as decoration, and the ornamental value and collection value are very high.