Many chondrules consist of phenocrysts embedded in a glassy mesostasis. Sometimes the interstitial glass will have been annealed to such an extent that it will...

The Gao-Guenie fall in 1960 produced many oriented stones. I bought this small one from Marcin Cimała and had it thin sectioned.      ...

At this writing, September 2022, there are five CL, Loongana group, carbonaceous chondrites. All are of petrologic type 3.9 or 4. Metzler et al. defined...

NWA 13784 CV3-an was brought to us by Hanno Strufe and Andreas Grünemeyer, described by Ansgar Greshake with oxygen isotopes by Karen Ziegler. It appears...

NWA 2798 L3.2 S2 W1 contains chondrules and clasts that contain fine acicular crystals. Here we look at a larger one.        ...

This two inch long slice was a gift from Hanno Strufe who owns one kilogram of this material with Ismaily Sidi Mohamed. Of course I...

The Nakhla meteorite fell in the Nile delta the morning of June 28, 1911. Nakhlites are igneous rocks formed in flows or intrusions on Mars....

Alcide d’Orbigny was a French naturalist who explored South America from 1826 to 1833. The 16.55kg meteorite was found near the Argentine settlement that bears...

The 3.00 designation is assigned to chondrites that have experienced the least amount of metamorphism. Few are recognized. In September 2021 there are ten. The...

New Raymer is a metamorphic type 4 so we wouldn’t expect to see dark matrix and sharply defined chondrules. Still, there are opaque areas that...

The silicates in Aba Panu have been strongly shocked so it is not a particularly pretty meteorite under the microscope in transmitted light, in spite...

Northwest Africa 10674 was purchased by Marc Jost as four pieces totaling 1,193 grams. It was classified by Irving and Kuehner as a polymict eucrite...