72549 (7) Impact Melt Breccia
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Fact sheet
Description: 

72549 and its companion 72548 are rake samples that appear to have similar modes, mineral compositions and textures. They are clastic in nature but have been partially melted and recrystallized. The crystalline matrix appears different from most impact melt rocks and constitutes 80% of each sample. Mineral clasts dominate over lithic clasts. Rotation 1 shows a considerably shocked plagioclase clast. Rotation 2 shows more plagioclase feldspar clasts, one which has been polygonised.

The sample weighed 21 grams before analysis and has not been dated.

Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/

In Place
In Time
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
Collection:
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Type:
Type: 
metamorphic
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Rock-forming minerals:

Rock forming mineral:

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