This is an analyzed specimem – see the “Analysis” tab. According to the qualitative EDS, the tiny white flakes/discs are intermediate in composition between parisite-(Ce) and synchysite-(Ce). At MSH, these two minerals sometimes form syntactic intergrowths, which is probably the case here. (See the 1990 Min Rec special article on MSH.) In any case, parisite-(Ce) is rare at MSH and this is a fairly rich example.

The first pair of photos is a close-up (FOV 3.5 x 2.3 mm) of one small area on the specimen showing platy/flaky crystals to about 0.15 mm. You will need 30-40X to see these as in the photo.

The next pair of photos is a broader view (FOV 4.4 x 6.6 mm) of one the more densely covered areas on the specimen.

The fifth photo (FOV 6.8 x 4.3 mm) shows another, similar area. There is plenty of coverage on other parts of the specimen.

Found 8/01

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