November 2012

Ochansk: If it’s abundant, it better be good

An August 1887 Witnessed Fall: Ochansk, Russia Ochansk: If it’s abundant, it better be good.   With 500kg of the brecciated H4 named Ochansk arriving on earth, a collector desiring a piece should focus on collectability and a historical paper trail. In this particular case, the specimen has traveled through at least four documented collections. At about one o’clock in

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Dellen Tagamite Sweden

Dellen Crater is a roundish lake system in central Sweden near the east coast 180 miles north of Stockholm. It is about 11 miles across. The impact that formed it occurred 89.0 ± 2.7 million years ago. Some of the impact rock from the site is called tagamite. It is a term that was introduced in 1975 to describe impact

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Australite Indicator Core

Upon first introduction to an Australite ablation core it is a common error to confuse the anterior and posterior surfaces. The always present smoothly rounded surface is very suggestive of the frontal shield on an oriented chondrite, but this impression is incorrect. As Australites made their final plunge through the atmosphere, the frontal surface heated to the point where thin

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