- Canyon Diablo (meteorite)
Meteorite
Name= Canyon Diablo
Image_caption= Canyon Diablo iron meteorite (IIIAB) 2,641 grams. Note colorful natural desert patina.
Image_width=
Type= Iron
Class=
Group= IAB-MG
Structural_classification= CoarseOctahedrite
Composition= 7.1% Ni; 0.46% Co; 0.26% P; 1% C; 1% S; 80ppm Ga; 320ppm Ge; 1,9ppm Ir
Shock=
Weathering=
Country=United States
Region=Coconino County ,Arizona
Lat_Long= coord|35|03|N|111|02|W|display=inline,title [ [http://tin.er.usgs.gov/meteor/metbull.php?code=5257 Meteoritical Bulletin Database: "Canyon Diablo"] ]
Observed_fall= No
Fall_date= 49000 years ago [http://www.spaceguarduk.com/cd/images/crt-ear.html Spaceguard Foundation UK] ]
Found_date=1891
TKW= 30tonne s
Image2_caption= Canyon Diablo endcutThe Canyon Diablometeorite impacted atBarringer Crater (Meteor Crater ),Arizona and is known from fragments collected around the crater and nearby Canyon Diablo which lies about 3 to 4 miles west of the crater.History
The
meteoroid fell between 20,000 and 40,000 years ago. The meteorite has been known and collected since the mid 1800s and was known and used by pre-historic Native Americans. The Barringer Crater, from the late 19th to the mid-20th century, was the center of a long dispute over the origin of craters that showed little evidence of volcanism. That debate was settled in the 1950's thanks to Eugene Shoemaker's study of the crater.Clair Cameron Patterson , in 1953, used samples of the meteorite to measure theage of the Earth at 4,550 million years (± 70 million years).Composition and classification
This meteorite is an iron
octahedrite .Minerals reported from the meteorite include:
*Cohenite - iron carbide
*Chromite - iron magnesium chromium oxide
*Daubreelite - iron(II) chromium sulfide
*Diamond andlonsdaleite - carbon
*Graphite - carbon
*Haxonite - iron nickel carbide
*Kamacite iron nickel alloy - the most common component.
*base metal sulfide s
*Schreibersite - iron nickel phosphide
*Taenite iron nickel alloy
*Troilite a variety of the iron sulfide mineral pyrrhotite. The troilite in this sample is used as the standard reference for sulfur isotope ratios.
*Moissanite - a variety of silicon carbide, the second hardest natural mineral.Fragments
There are fragments among different science related museums around the world including the
Field Museum of Natural History in Chicago.The biggest fragment ever found is the Holsinger Meteorite.Notes
ee also
Meteor Crater References
* [http://www.mindat.org/loc-3317.html Mindat.org]
* [http://neo.jpl.nasa.gov/news/news031.html NASA research note]
* [http://www.alaska.net/~meteor/CDinfo.htm Learn About the Canyon Diablo Meteorite]
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