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NWA 6007 L3.5

NWA 6007 is terrestrially fresh but shocked. It has well defined chondrules as you would expect of an L3.5. Compression has caused an orientation of components within the stone. Dark inclusions are scattered throughout.

Slice of NWA 6007 L3.5 S4, W1, 28 mm wide. Note orientation of elements.

 

Fanned sets of olivine bars within a larger chondrule. NWA 6007 L3.5

 

A porphyritic olivine chondrule (center) and a radial pyroxene chondrule (right center). Both have been squashed and the latter is “bleached”. Water has affected the outer part by dissolving the glass from between the thin pyroxene fibers. NWA 6007 L3.5

 

In the center is a cryptocrystalline chondrule. This bright exposure shows it is composed of numerous zones, each of which is a bundle of pyroxene fibers, rather like those in radial pyroxene chondrules but finer. NWA 6007 L3.5

 

A dark inclusion about 3 mm long. NWA 6007 L3.5

 

A distorted radial pyroxene chondrule. NWA 6007 L3.5

 

A fine grained aggregate of minerals among more coarse neighbors. NWA 6007 L3.5

 

A closer view of the fine grained aggregate. The dark oval is a bleb of metal. Field of view is 1.3 mm wide. NWA 6007 L3.5

 

In the center, is that an alien handprint?

 

Skeletal olivine laths grew from right to left. Crystallization was fast and might have been initiated at the right by contact with a cold object. Chondrule is 0.7 mm long. NWA 6007 L3.5
John Kashuba

John Kashuba

John is a natural history enthusiast living in Oregon.
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