건설콘페이퍼 Engi's CONPAPER

지구를 연상케하는 표면을 그라인딩한 '운석' Brilliant Polished Meteorite Offers a Fascinating Look at the Making of Earth(VIDEO)

무엇일까?

마치 만든 조형물 같이 생겼지만 이것은 표면을 그라인딩한 '운석'이다.

이 운석은 팰러사이트(석철 운석의 일종)라고 하며 황록색의 투명한

구성물은 지구맨틀의 최상부에서 형성되는 '감람석'이라 한다.

운석은 요즘 한국에서도 엄청난 고가의 거래 제의로 화제가 되고 있다.

by Ki Chul Hwang

Conpaper Editor Distributor @conpaper

황기철 콘페이퍼 에디터

Posted by Sara Barnes

When picturing a meteorite, we generally think of it as something that’s jagged with a rough texture. Reddit user Isai76, however, recently shared something unexpected - a polished meteorite! It was posted in the subreddit calledDamnthatsinteresting, a place that welcomes the rare and unusual. The shiny rock hardly looks like a meteorite at all, and it features brilliant metallic bits underneath a glass-like surface.

In addition to the photo, fellow Redditor fewthe3rd explained what makes this polished piece so special. It’s technically a pallasitic meteorite, and the green-yellow transparent minerals are called olivine, which composes most of the upper mantle of the Earth. The metallic parts are an iron-nickel alloy.

Here’s where it gets interesting. The mixture of the iron-nickel alloy and olivine originated from a small protoplanet out of the dawn of the Solar System. It melted from its original material of chondrite and separated into iron alloy and silicate phases (known as core and mantle). “Towards the end of the protoplanet's life,” fewthe3rd explains, “it experienced a very violent collision with another body and [this] forced the contact between the core and the mantle to become perturbed via shockwaves from the impact - hence the mixing.” Collisions like this lead to bigger bodies and eventually formed the terrestrial planets. “So this is kind of an baby picture of the Earth,” fewthe3rd says.

Catch a Falling Star Meterorites currently sells this special polished meteorite for $12,000.

Image shared by Isai76 on Reddit