MSH is the TL for normandite, but it is a rare mineral here, mostly found as un-terminated crystals embedded in massive nepheline-syenite. Is also found – very rarely – in sodalite xenoliths and miarolitic cavities. This (analyzed) specimen is unusual in that there are numerous free-growing laths. I am not sure what the environment is in this case, but it is probably not nepheline syenite. Very unusual material. See the “Analysis” tab for an EDS scan.

The first pair of photos (FOV 2.9 x 2.25 mm) shows numerous free-growing needles to 1.05 mm.

The second pair of photos (FOV 2.25 x 3.65 mm) shows more robust, tightly packed laths. But they are still growing freely in a cavity.

The fifth photo (FOV 7.0 x 4.5 mm) shows part of one “side” of the specimen. Here most of the normandite laths are more “typical” in that they are embedded in matrix. But the matrix here isn’t nepheline-syenite. The laths transition to free-growing in the upper left quadrant of the photo. 

The full-view photo shows the   “top” and other “side” of the specimen.

Single item shipping weight is 2.9 oz (81 g). For shipments outside the USA, up to a total weight < 8 oz (225g), this can be combined with items from this or other auctions for the same postage.

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 Priority Mail ($7.25 - $9.20 including packing – varies by destination).