Rémondite-(Ce) is a very rare mineral, known only from a handful of localities. It is very rare at MSH, but apparently not as rare as at the other localities.

The first pair of photos (FOV 6.6 x 4.4 mm) show dark silvery-gray “brooms” of rémondite-(Ce) to 3.1 mm. This is one of the three main habits for rémondite at MSH. In the center are two small smoky quartz crystals and in the upper right corner is the tip of a very thin eudidymite crystal. There are also a few very small gemmy siderite rhombs. The larger white crystals are “feldspar” – probably microcline. It may be helpful to view these very “busy” photos in stereo.

Some of these photos can be viewed in stereo on the Web. But you will have to search for them. Off-site references can't be given here. 

The second pair of photos (FOV 6.8 x 4.5 mm) shows almost all of the eudidymite, which spans about 4.5 mm. The two quartz crystals on the left are well terminated. The larger one on the right has a pitted/contacted termination – the result of running into the wall of the little cavity.

The fifth photo (FOV 6.8 x 4.4 mm) shows more rémondite-(Ce) in an adjacent part of the cavity. The little bit of eudidymite in the lower left corner is part of the aggregate shown in the previous two photos.

Incidentally, the other two “common” habits for rémondite at MSH are red-orange brooms of similar shape, grading to radiating prismatic crystals, and pale to deep red-orange, gemmy to opaque, apatite like crystals. It is also found as subhedral to anhedral embedded masses, etc. Most varieties exhibit very strong REE absorption lines.

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