September 2015

The Chiang Khan Meteorite Fall: A Gift That Just Keeps Giving

By | | Accretion Desk

At 5:30 in the morning on November 17, 1981, a fireball exploded high above the citizens Ban Klang and Chiang-Khan in the province of Loei in Thailand. Loud thunderous reports rolled across the land right before a shower of stones pelted the landscape. Scientists arrived on scene several days after the locals had gathered up all the easy-to-find pieces that amounted

The Chiang Khan Meteorite Fall: A Gift That Just Keeps Giving Read Post »

Summertime Funtime

By | | Jim's Fragments

Well summer is nearly over as I write this. It has been a fun season this year. Got in a couple trip to the desert for astrophotography. Got some ceramic pieces made and with both those interests tried new equipment and techniques. I try to never stop learning new things. This article has frankly been a problem. I have been

Summertime Funtime Read Post »

Bob’s Bulletin – Vol. 1 No. 3

By | | Bob's Findings

A newsletter for “orphaned” meteorites from the USA. In my first Bulletin, I introduced the phrase “orphaned-meteorites from the USA”. I defined these “orphans” as being unwitnessed-fall Ordinary Chondrite (OC) meteorite “finds” that are recovered in the U.S. Unfortunately, the vast majority of U.S. finds are of this type. I went on to write that these U.S. finds were being

Bob’s Bulletin – Vol. 1 No. 3 Read Post »

Micro Visions 3.00

By | | Micro Visions

3.00 is a rarely given petrologic grade assigned to meteorites which experienced the lowest levels of thermal alteration on the parent body. (Aqueous alteration is another matter.) NWA 8276 L3.00 was assigned this grade based on laboratory tests and a study by Grossman and Brearley published in 2005. Among many findings the study’s authors showed that at the onset of

Micro Visions 3.00 Read Post »

Pseudotektites, a Tektite Teaser indeed!

By | | Norm's Tektite Teasers

There is a family of remarkably similar (and usually controversial) natural glasses, including, Saffordites (aka” Arizonaites”)Colombianites, Healdsburgites, and Philippine Amerikanites, which I term “pseudotektites”. Placed side by side with the real thing, these look very much like tektites, but they almost certainly are not. We are often approached by individuals that are convinced that they have discovered new tektites or

Pseudotektites, a Tektite Teaser indeed! Read Post »

Understanding the Early Solar System through the Analysis of Meteorites: The Process of Maximizing Data while Minimizing Sample Destruction

By | | IMCA Insights

Ellen J. Crapster-Pregont1,2 1.Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, 10964, USA. 2.Dept. of Earth and Planetary Science, American Museum of Natural History, New York, NY, 10024, USA. Every year approximately 40,000 meteorites make it to Earth’s surface. This value is based on camera network meteor data (Halliday et al., 1989; Bland, 2005) and weathering studies of hot desert meteorites

Understanding the Early Solar System through the Analysis of Meteorites: The Process of Maximizing Data while Minimizing Sample Destruction Read Post »

Scroll to Top