Hi Geoff, Jules and everyone,
If the black stuff in the crater and along the rim is due to a very high albedo effect, then the very high reflectivity of the material
is quite similar to a lunar lander with its aluminum body. Reminds me of the Luna 20 lander photograph where the sun is bearing directly down on the spacecraft- no shadow.http://forum.moonzoo.org/index.php?topic=171.0
Kodemunkey's black stuff below:
The only thing I can think of that would be that reflective on the lunar surface is a glass-like material similar perhaps to this Apollo sample below:http://forum.moonzoo.org/index.php?topic=264.msg6052#msg6052
This could fall in line with my view that there is a brittle surface layer of material around the rim of the crater, now adding the possibility of it being impact melt glass. So perhaps an impact melt splash can also be partially liquified glass.