About lek lai

What is lek lai meteorite stone?
十么是沥赖石?
Lek lai meteorites stone are stony or metallic bodies that fall to the Earth from space. All lek lai meteorites show characteristic that are not observed in known rocks of Earth.
沥赖石是一种从外太空来到地球的流铁矿物。沥赖石的特质证明了它们并不是地球上的任何一种石头。

Rainbow lek lai
A rainbow lek lai with shiny surface七彩沥赖石具有光泽亮丽的表面。
Characteristic of lek lai meteorite stone
When we look at lek lai meteorite we can see that it is beautiful, and lek lai have different colours.
Looking at lek lai meteorite we can see that it can reflect light
Some lek lai meteorite has a shiny and beautiful surface

Beautiful lak lai
A beautiful lek lai with many coloures
What are meteorites? 十么是石陨石?
Meteorites come from asteroids, a rare few come from larger bodies such as the Moon and Mars, and many of the smallest meteorites, “micrometeorites”, are dust from comets. Many meteorites preserve chemical and physical properties that were established 4.5 billion years ago, during the earliest history of the solar system, and thus provide some of the best clues to the nature of the events that occurred in that remote time. Do you know that about roughly 70% of the Earth is covered with water? Therefore, about 70% of the meteorites falling to the earth’s surface are lost in oceans, lakes and rivers.石陨石多数来自宇宙中的行星,极少数是来自月球,火星等。

Classes of meteorites石陨石的级别
There are three main classes of lek lai
Stony meteorites,石头陨石
Iron meteorites铁陨石
Stony-iron meteorites.铁石陨石

Stony Meteorites: Chondrites and Achondrites
石头陨石: 球粒陨石,非球粒陨石
Stony meteorites are by far the most common. More than 95% of meteorites observed to fall to Earth are stony. They can be divided into chondrites and achondrites.
95%的石陨石基本上是石头陨石。可分为球粒陨石,非球粒陨石两种。

A typical chondrite
A typical chondrite
Both types are composed mostly of silicate minerals, but the great majority also contain metallic iron in small-scattered grains.
Chondrites are named for their most prominent feature – millimeter-sized spherical bodies called chon rules. These chon rules formed 4.5 billion years ago in the Solar Nebula – the cloud of gas and dust from which the Sun, planets, asteroids, and comets formed. Less common, comprising only a few percent of all meteorites, are achondrites.

chondrite pebbles
Ordinary chondrite pebbles found in the Sahara desert
These are also stony meteorites composed primarily of silicates, but these meteorites have experienced familiar geologic processes of melting and differentiation – although these happened long ago. Most achondrites formed on asteroids during the birth of the Solar System, but a small number formed on Mars and the Moon.

Stony-Iron Meteorites铁石陨石
Stony-iron meteorites, contain about equal proportions of metal and silicate material, and are rare (less than 2% of all known meteorites). Stony-iron meteorites form in places where metal and silicate are mixed. One type of stony-iron are pallasites – rocks composed of a network of iron-nickel metal surrounding a greenish, silicate mineral called olivine.
铁石陨石蕴含了相同比例的铁及硅酸盐,数量非常稀少。

Iron Meteorites 铁陨石
While they are fairly rare compared to the stony meteorites, comprising about 5.7% of witnessed falls, they have historically been heavily overrepresented in meteorite collections. This is due to several factors:
Firstly they are easily recognized
Secondly they are much more resistant to weathering.
Thirdly they are much more likely to survive atmospheric entry, and are more resistant to the resulting ablation, hence they are more likely to be found as large pieces.

In fact, Iron meteorites account for almost 90% of the mass of all known meteorites, about 500 tons. All the largest known meteorites are of this type, including the largest — the Hoba meteorite.
铁陨石是据我们了解的陨石当中占对大多数。

Hoba meteorite
The Hoba meteorite
The Hoba is a meteorite that lies on a farm not far from Grootfontein, Namibia. It has been uncovered but, because of its large mass, has never been moved from where it fell. The main mass is estimated at over 60 tons, and it is the largest known meteorite
(As a single piece) and the most massive naturally occurring piece of iron known at the Earth’s surface.

The overwhelming bulk of these meteorites consists of the Fe Ni-alloys kamacite and
tainted. The chemical composition is dominated by the elements Fe, Ni and Co, which make up more than 95%. Ni is always present, the concentration lies between 5 and about 25%. This fact can be used to distinguish meteoritic irons from man-made products, which usually contain much lower amounts of Ni.

Meteorites, gold & diamonds
Total worldwide meteorite recovery is less than ½ of 1% (0.005%) of world gold production in the last 100 years. Diamond extraction from primary deposits started in the 1870’s after the discovery of the diamond fields in South Africa.

How do you find meteorites? 怎样寻找石陨石?
Most meteorites are magnetic. Buy a magnet and carry it with you when you are hunting for meteorites. This is the first diagnostic test.
Most meteorites have surface characteristics which distinguish them from terrestrial rocks.
Any rock with visible metal particles or any solid metal object not obviously man-made is a potential meteorite.
Bring every rock with any of these characteristics back to the lab for further analysis.

Where do you find meteorites? 哪里能找到石陨石?
The best places to find meteorites are areas of low rainfall. Water is the number one enemy of meteorites causing rapid weathering and deterioration to the point where they become either unrecognizable as meteorites or crumble into sand and dust. Deserts are the first and easiest choice for meteorite hunting. Antarctica is next but it is cost prohibitive for most meteorite hunters.
寻找石陨石最佳的地点具低降雨量。沙漠是最容易找到石陨石的地方。

What can you do with meteorites?
 Firstly the most common modern use of meteorites is in Jewelry and watch faces.
Secondly you can also eat them!
In addition you can make modern fancy tools
Furthermore you can make spheres & cubes
And also you can make rings

What are meteorites worth? 石陨石价值多少?
Do you know that Meteorite prices range from as little as US$0.10 (RM0.3) per gram for common unclassified chondrites to as high as US$40,000 (RM 121400) per gram?

References
1.Mineral Sciences – Division of Meteorites
http://mineralsciences.si.edu/collections/meteorites.htm
2. Space Gems
http://www.spacegems.org/