Mixing
Canyon Diablo (meteorite)
Clash Royale CLAN TAG#URR8PPP | Canyon Diablo | |
|---|---|
 Canyon Diablo iron meteorite fragment (IAB) 2,641 grams. Note colorful natural desert patina. | |
| Type | Iron |
| Structural classification | Coarse Octahedrite |
| Group | IAB-MG |
| Composition | 7.1% Ni; 0.46% Co; 0.26% P; 1% C; 1% S; 80ppm Ga; 320ppm Ge; 1,9ppm Ir |
| Country | United States |
| Region | Coconino County, Arizona |
| Coordinates | 35°03′N 111°02′W / 35.050°N 111.033°W / 35.050; -111.033Coordinates: 35°03′N 111°02′W / 35.050°N 111.033°W / 35.050; -111.033[1] |
| Observed fall | No |
| Fall date | 49000 years ago[2] |
| Found date | 1891 |
| TKW | 30 tonnes |
| Strewn field | Yes |
 etched slice | |
 Related media on Wikimedia Commons | |
The Canyon Diablo meteorites include the many fragments of the asteroid that created Barringer Crater (Meteor Crater), Arizona, United States. Meteorites have been found around the crater rim, and are named for nearby Canyon Diablo, which lies about three to four miles west of the crater.
Contents
1 History
2 Composition and classification
3 Fragments
4 See also
5 References
6 External links
History
The asteroid fell about 50,000 years ago.[3] The meteorites have been known and collected since the mid-19th century and were 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 1950s thanks to Eugene Shoemaker's study of the crater.
In 1953, Clair Cameron Patterson measured ratios of the lead isotopes in samples of the meteorite. The result permitted a refinement of the estimate of the age of the Earth to 4.550 billion years (± 70 million years).[4]
Composition and classification
This meteorite is an iron octahedrite.
Minerals reported from the meteorite include:
Cohenite - iron carbide
Chromite - iron magnesium chromium oxide
Daubréelite - iron(II) chromium sulfide
Diamond and lonsdaleite - carbon
Graphite - carbon
Haxonite - iron nickel carbide
Kamacite iron nickel alloy - the most common component.
Base metal sulfides
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.
Samples may contain troilite-graphite nodules with metal veins and small diamonds.
Fragments
"Holsinger Meteorite", the biggest recovered fragment of the Canyon Diablo meteorite
Example of a small (90mm) fragment of the meteorite
The biggest fragment ever found is the Holsinger Meteorite, weighing 639 kilograms (1,409 lb), now on display in the Meteor Crater Visitor Center on the rim of the crater. Other famous fragments:
- 485 kilograms (1,069 lb), Canterbury Museum, Christchurch, New Zealand. The largest fragment outside the United States.[5]
360 kilograms (790 lb), Muséum national d'Histoire naturelle (MNHN), Paris
242.6 kilograms (535 lb), Lowell Observatory in Flagstaff, Arizona[6]- 225.9 kilograms (498 lb), Academy of Natural Sciences of Drexel University, Philadelphia, Pennsylvania.
- 194 kilograms (427 lb), Beloit College, Beloit, Wisconsin.
162 kilograms (357 lb), Meteorite Museum, University of California, Los Angeles [7]- 145 kilograms (320 lb), Geology Museum, University of Wisconsin - Madison, Wisconsin.
136 kilograms (300 lb), Franklin Institute, Philadelphia.[8]
122 kilograms (269 lb), Griffith Observatory, Los Angeles, California. Fragment loaned by the Geology Department of Pomona College.- 179 kilograms (395 lb), Griffith Observatory, Los Angeles, California.
100 kilograms (220 lb), California Academy of Sciences, San Francisco.- 54 kilograms (119 lb), Newark Museum, Newark, New Jersey.
- 28 kilograms (57 lbs), Peoria Riverfront Museum, Dome Planetarium, Peoria, Illinois
Basket Meteorite (22 kilograms (49 lb)), Meteor Crater Museum, Arizona.[9][10]- 19 kilograms (42 lb), Wagner Free Institute of Science, Philadelphia.
See also
- Glossary of meteoritics
- δ34S
- Reference materials for stable isotope analysis
References
^ Meteoritical Bulletin Database: Canyon Diablo
^ Spaceguard Foundation UK Archived 2006-11-17 at the Wayback Machine.
^ Roddy, D. J.; E. M. Shoemaker (1995). "Meteor Crater (Barringer Meteorite Crater), Arizona: summary of impact conditions". Meteoritics. 30 (5): 567.
^ Patterson, C. (1956). "Age of Meteorites and the Earth". Geochimica et Cosmochimica Acta. 10: 230–237. Bibcode:1956GeCoA..10..230P. doi:10.1016/0016-7037(56)90036-9.
^ Canyon Diablo Meteorite; MET16, Canterbury Museum collection on eHive
^ Meteorite moves to Flag
^ UCLA's new Meteorite Museum rocks Archived June 8, 2013, at the Wayback Machine.
^ Canyon Diablo meteorite at The Franklin Institute
^ Rummager's galactic find turns out to be stolen meteorite
^ Long-lost meteorite comes home to Arizona
External links
 | Wikimedia Commons has media related to Canyon Diablo (meteorite). |
- Mindat.org
- NASA research note
Comments
Post a Comment