This specimen features small, but beautiful, crystals of two iconic MSH minerals - manganoneptunite and sérandite - on an interesting PSM of catapleiite after eudialyte (group). This specimen is (probably) from the same find as illustrated on p. 57 of the July-August 200 MSH special issue of Lapis.

Somewhat similar PSMs of catapleiite after sodalite are also known, but those are generally stone-gray in color. Sometimes one sees PSMs from this find stated as also being after sodalite. I think that is an error, but, since there seems to be no relict material, there is nothing to go on apart from morphology – which can be deceiving. Incidentally, this find is also well known for the beautiful “pink” petarasite that is often associated. But there is no petarasite on this specimen.

The first pair of photos (FOV 3.5 x 2.3 mm) is a close-up of some of the best manganoneptunite crystals. The bottom crystal on the far right is ca 1.2 mm; the characteristic twin on the left is ca 0.75 mm. Note that the tiny catapleiite crystals on the surface of the underlying PSM form a distinctly oriented pattern. They did not grow randomly.

The second pair of photos (FOV 4.3 x 6.4) mm is a broader view showing more of both the manganoneptunite and the catapleiite PSM.

The third pair of photos (FOV 4.4 x 6.6 mm) is a close-up of some of the beautiful, gemmy, yellow-orange, sérandite crystals. The longest crystal is 4.9 mm tall.

The fourth pair of photos is a  nearly full view of the sérandite side of the specimen. The FOV is ca 15 mm high.

Single item shipping weight (with TN case) is 3.1 oz (88g). For shipments outside the USA, up to a total weight < 8 oz (225g), this can be combined with other items from this or other auctions for the same postage. If you don’t need the TN case, you can save about 0.3 oz in weight which could be used for something else.

Within the USA, postage for total weights up to 13 oz ranges from $4.25 to $6.50 (including packing etc) regardless of destination. Above 13 oz, I will use “own box” Priority Mail. The rate, including packing, varies by destination from $7.25 to $9.50.