About the UV photo: It was made using ISO 800, aperture priority at f8, and auto white balance. The exposure too 30 seconds. Only a haze filter was used to cut down on lens fluorescence. Because I only have one UV source, the left side came out a bit underexposed. I used Photoshop to make it more visible. Other than that, only minimal processing was used.  Stacking was not used. Note that the calcite response is orange-red - as it should be – so the AWB seems to have done a good job here. (The willemite response is perhaps a bit too blue-green.)

More importantly: Is this what you would see with the naked eye? If you had a powerful enough UV source, it would probably be close. A “real” UV source at the Franklin Mineral Museum produced an appearance much like what is in the photo. Or so I recall at least in my minds eye. But it did not look this bright when I was taking the photo with my much wimpier source.

This specimen is ex Stephen Hocking. (No, not Stephen Hawking!)

The yellowish stuff is (probably) andradite. The dark bronzy plates are hendricksite. This is a somewhat atypical association.

The Parker Shaft of the Franklin Mine is the type locality for margarosanite. This doesn’t look like typical Parker Shaft material so it may be from another part of the mine. Is that still from the TL? I don’t know the rules of this “game”.

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