![]() ![]() Members of the public are always welcome to bring rocks and minerals to our Bloomington office for more information, but the IGWS is unable to inspect or evaluate suspected meteorites. The Hangman's Crossing meteorite exhibits features that are indicators of meteorites. Despite their apparent similarity, pallasites and mesosiderites appear to have different histories. Mesosiderites contain small, bright, irregularly distributed metal flecks in a matrix of plagioclase and Pallasites have large (5-10 mm) glassy grains of olivine in a continuous matrix of ![]() Stoney irons consist of about 50 percent nickel and iron and 50 percent silicate minerals. But they may also contain other mineralsĪnd metals, such as cobalt, copper, and zinc. Iron meteorites are mainly made of the nickel-iron minerals kacacite and taenite. Scientific information can be lost if the meteorite is improperly handled. Many tests needed to verify the identity of a meteorite should be performed by an experienced scientist, as much of the Pattern (see LaPorte meteorite image) is also further proof. A mixture of nickel and iron that appears asīright metallic flecks in a stone, or that makes up most of the object, also is a positive indicator. The Lafayette meteorite exhibits flow structures.Ĭhondrules are almost certain proof that an object is a meteorite. Indiana Geologic Names Information System Underground Coal Gasification Potential in the Illinois Basin Landmarks in Indiana Geology - A Timeline ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |