Featured Research

from universities, journals, and other organizations

Scientists find new type of mineral in historic meteorite

Date:
April 5, 2011
Source:
NASA/Johnson Space Center
Summary:
Researchers have found a new mineral named "Wassonite" in one of the most historically significant meteorites recovered in Antarctica in December 1969.

A bright field scanning transmission electron microscope (STEM) micrograph showing a Wassonite grain in dark contrast.
Credit: Image courtesy of NASA

NASA and co-researchers from the United States, South Korea and Japan have found a new mineral named "Wassonite" in one of the most historically significant meteorites recovered in Antarctica in December 1969.

The new mineral was discovered within the meteorite officially designated Yamato 691 enstatite chondrite. The meteorite was discovered the same year as other landmark meteorites Allende and Murchison and the return of the first Apollo lunar samples. The study of meteorites helps define our understanding of the formation and history of the solar system.

The meteorite likely may have originated from an asteroid orbiting between Mars and Jupiter. Wassonite is among the tiniest, yet most important, minerals identified in the 4.5-billion-year-old sample. The research team, headed by NASA space scientist Keiko Nakamura-Messenger, added the mineral to the list of 4,500 officially approved by the International Mineralogical Association.

"Wassonite is a mineral formed from only two elements, sulfur and titanium, yet it possesses a unique crystal structure that has not been previously observed in nature," said Nakamura-Messenger.

In 1969, members of the Japanese Antarctic Research Expedition discovered nine meteorites on the blue ice field of the Yamato Mountains in Antarctica. This was the first significant recovery of Antarctic meteorites and represented samples of several different types. As a result, the United States and Japan conducted systematic follow-up searches for meteorites in Antarctica that recovered more than 40,000 specimens, including extremely rare Martian and lunar meteorites.

Researchers found Wassonite surrounded by additional unknown minerals that are being investigated. The mineral is less than one-hundredth the width of a human hair or 50x450 nanometers. It would have been impossible to discover without NASA's transmission electron microscope, which is capable of isolating the Wassonite grains and determining their chemical composition and atomic structure.

"More secrets of the universe can be revealed from these specimens using 21st century nano-technology," said Nakamura-Messenger.

The new mineral's name was approved by the International Mineralogical Association. It honors John T. Wasson, professor at the University of California, Los Angeles (UCLA). Wasson is known for his achievements across a broad swath of meteorite and impact research, including the use of neutron activation data to classify meteorites and to formulate models for the chemical makeup of bulk chondrites.

"Meteorites, and the minerals within them, are windows to the formation of our solar system," said Lindsay Keller, space scientist at NASA's Johnson Space Center in Houston. Keller is the co-discoverer and principal investigator of the microscope used to analyze the Wassonite crystals. "Through these kinds of studies we can learn about the conditions that existed and the processes that were occurring then."

Johnson's advanced work in nanotechnology is part of Johnson's Astromaterial Research and Exploration Science Directorate. It is currently the location for celestial materials that would be returned to Earth from spacecraft. The facility collaborates with industry, academic and international organizations.

"The beauty of this research is that it really demonstrates how the Johnson Space Center has become a pre-eminent leader in the field of nanoscale analysis," said Simon Clemett, a space scientist at Johnson and co-discoverer of the new mineral. "In the words of the great English poet William Blake, we are now able 'to see the world in a grain of sand.'"

In 2006 ARES scientists won research grants that established major facilities for the nanoscale analysis of cometary dust samples returned by the NASA Stardust Mission spacecraft. The instruments include a field-emission transmission electron microscope with extremely high sensitivity for chemical measurements and a next-generation NanoSIMS ion microprobe for nanometer scale isotopic measurements. Most recently, the team acquired a focused ion beam (FIB) instrument, used in this study, that enables analyzing a wider range of nanometer scale samples in geologically complex materials.

Collaborators in the discovery of the new mineral include Clemett, Keller and Zia Rahman in the Astromaterials Research and Exploration Science Directorate at Johnson; Alan Rubin from UCLA; Byeon-Gak Choi from Seoul National University, South Korea; Shouliang Zhang from the Lunar and Planetary Institute in Houston; and Katsunari Oikawa from Tohoku University, Japan.


Story Source:

The above story is based on materials provided by NASA/Johnson Space Center. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Johnson Space Center. "Scientists find new type of mineral in historic meteorite." ScienceDaily. ScienceDaily, 5 April 2011. <www.sciencedaily.com/releases/2011/04/110405151612.htm>.
NASA/Johnson Space Center. (2011, April 5). Scientists find new type of mineral in historic meteorite. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2011/04/110405151612.htm
NASA/Johnson Space Center. "Scientists find new type of mineral in historic meteorite." ScienceDaily. www.sciencedaily.com/releases/2011/04/110405151612.htm (accessed September 2, 2014).

Share This




More Space & Time News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: NASA Captures Solar Flare

Raw: NASA Captures Solar Flare

AP (Sep. 1, 2014) — NASA reported the sun emitted a mid-level solar flare, on August 24th. NASA's Solar Dynamics Observatory captured the images of the flare, which erupted on the left side of the sun. (Sept. 1) Video provided by AP
Powered by NewsLook.com
Space Shuttle Discovery's Legacy, 30 Years Later

Space Shuttle Discovery's Legacy, 30 Years Later

Newsy (Aug. 30, 2014) — The space shuttle Discovery launched for the very first time 30 years ago. Here's a look back at its legacy. Video provided by Newsy
Powered by NewsLook.com
Experiment Tests Whether Universe Is Actually A Hologram

Experiment Tests Whether Universe Is Actually A Hologram

Newsy (Aug. 27, 2014) — Researchers at Fermilab are using a device called "The Holometer" to test whether our universe is actually a 2-D hologram that just seems 3-D. Video provided by Newsy
Powered by NewsLook.com
SpaceX’s Falcon 9 Rocket Explodes After Liftoff

SpaceX’s Falcon 9 Rocket Explodes After Liftoff

Newsy (Aug. 23, 2014) — The private spaceflight company says it is preparing a thorough investigation into Friday's mishap. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins