some photos of Apollo samples

granulitic breccias

Granulitic breccias are metamorphic rocks. They're breccias that have been "cooked," usually at depth, by the heat of an impact. Other words used to describe these rocks are granoblastic breccia, poikiloblastic breccia, granulitic impactite, and metabreccia (to imply that the rock has been metamorphosed).  All these rocks are feldspathic (>60% plagioclase). A characteristic of granulitic breccias is that the clasts are not as obvious as in other kinds of breccias.

 

Slice of Apollo 15 sample 15418, portions, at least, have the texture of a granulitic breccia. Millimeter ticks at bottom. Click on image for enlargement.

 

 

Fragments of Apollo 16 sample 67215, now generally regarded as a granulitic breccia. Click on image for enlargement.

 

Fragments of Apollo 17 granulitic breccia 77017. Click on image for enlargement.

 

Fragments of Apollo 17 granulitic breccia 78155. Click on image for enlargement.

 

Fragments of Apollo 17 granulitic breccia 79215. Click on image for enlargement.

 

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