MSH is the type and, currently, the only known locality for garronite-Na (IMA2015-015). It is a rare mineral here. Garronite-Ca (the “original” garronite) has not been reported from MSH.

The first pair of photos (FOV 2.4 x 3.6 mm) shows two pale blue-gray, “lumpy”, pseudo-octahedrons of garronite-Na ca 0.9 mm in maximum diameter. There are at least three unidentified minerals in the photos as well. Dark “fuzzy” spheroids similar to the ones shown are quite common in many environments at MSH. But my attempts to get them identified have resulted in conflicting and, at times, implausible, results. If one looks carefully, one will note that at least one of the fuzzy spheroids is much more “open” than the others. I have had no luck identifying either type. In addition, there are aggregates of thick tabular, colorless, glassy crystals (e.g. at center-left). I don’t know what these are either. Nor do I know what the tan crust on aegirine is (bottom of photos). I don’t think that any of these unknowns are likely to be “new and exciting”. I just don’t know what they are.

The second pair of photos (FOV 2.5 x 1.7  mm) shows smaller, “lumpier”, aggregates of garronite-Na in another cavity. These are more gray than blue in color and appear to be mostly aggregates of small crystals. The group at top center spans about 0.6 mm. The garronite aggregates almost completely surround another aggregate of dark-brown speheroids (seen in the center of the photos), but they are stuck in a narrow cavity and I didn’t mange to light up the other side of the cavity so as to show the complete “ring” of garronite.

Single item (small box) shipping weight 2.5 oz. For shipments outside the USA, up to a total weight of 8 oz (225 g), this could be combined with other items from this or future auctions for the same postage. If you wish to keep an “open box”, let me know.

For shipments within the USA, there is a nominal increase of about $0.20 for each additional ounce. Above 13 oz I will use “own box” Priority Mail ($8.75).