This specimen features several good sprays of raite along with gmelinite-Na of a very unusual (for MSH) prismatic habit.
The raite from this find (ca 2003) has varying colors and habits. Extensive analysis at the ROM showed that all the varieties are raite, although there is significant Zn enrichment. Recent qualitative EDS for another specimen also indicates Zn enriched raite.
The prismatic gmelinite-Na was verified via thorough analysis at the CMN. Qualitative EDS for a sample from this specimen is also consistent with gmelinite-Na, however, in this case, there is a coating of rhabdophane-(Ce) (or perhaps monazite-(Ce)). See the “Analysis” tab for all scans.
In addition, while, this is not a sérandite specimen, there is a fair amount of it on one side, as can be seen in the full-view photo. There are also masses of interesting bi-colored “eudialyte”, some of which is altering and has raite growing in seams and fissures. Qualitative EDS shows the presence of some REE elements. The analyst suggested kentbrooksite, but I don’t think that the scan is really convincing. (In general, qualitative EDS isn’t sufficient for definitive ID of eudialyte group minerals, but sometimes it can be very suggestive. Not in this case.)
The first pair of photos (FOV 2.25 x 3.25 mm) shows the best raite aggregate. Some of the sprays are growing out of a deep purple masses which turn out to be very compact fibrous raite as well. (I have included a scan for a sample of this sort of material from another specimen.)
The second pair of photos (FOV 3.45 x 2.5 mm) shows more raite (to 0.75 mm) in this case apparently nucleated on “eudialyte”.
The third pair of photos (FOV 6.7 x 3.6 mm) shows yet more raite.
The fourth pair of photos (FOV 1.3 x 1.95 m) shows the rhabdophane encrusted gmelinite crystals (to 0.55 mm). This is a very rare habit at MSH.
The last close-up photo (FOV 6.95 x 4.5 mm) shows some of the bi-colored, altering, “eudyalite”.
Single item shipping weight (w TN case) is 3.3 oz (94 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 now varies by destination. For total weights up to 13 oz, it ranges from $4.50 to $7.00 (including packing etc). Above 13 oz (up to 16 oz), I will use “own box” Priority Mail. The rate, including packing, varies from $8 to $10.