So, one might use a little artistic license and say that our planet is living, in addition to being unique in the Solar System. With the enormous tectonic plates that make up the Earth's crust moving, causing earthquakes and volcanic eruptions, the ground we stand upon is constantly changing. In addition many of the sedimentary rocks that make up the Earth's crust are rich in fossils-the remains of ancient life forms-but so far no fossil record of life on other planets has been discovered. Our planet's surface has been shaped and altered by the relentless action of rain, wind, and ice. In geologic terms it is our planet's crust, which a dictionary might define as "the outermost solid layer of a planet or moon." The outer crust of our planet is very different from other bodies in the Solar System, as it is rich in oxygen and water. The landscape that reveals itself to us is, obviously, only the surface of our home planet. Take a pensive look outside the window of your car while you are driving, or better yet, watch the hills, valleys and plains roll by as you travel on-board a train or airplane. Photograph by Leigh Anne DelRay, copyright Aerolite Meteorites. This small, complete individual is only 7.4 grams in weight. Unlike most meteorites, eucrites are not rich in iron, and will not adhere Note theĮxceptionally glossy black fusion crust, which is typical of eucrites. InĬompositional terms eucrites are quite similar to basalts found on Earth,Īnd they may have originated on the large asteroid Vesta. Rocks and minerals-including potential meteorites-must be examined in person for proper identification.Camel Donga is a rare type of achondrite known as a eucrite. Please refer to their site for additional information. These tips for identifying a meteorite were adapted from a guide from the University of New Mexico Meteorite Museum. A dense rock that leaves a black or red streak probably contains the iron minerals magnetite or hematite, respectively, neither of which are typically found in meteorites.
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