This is a large specimen that captures some of the complexity of MSH in a single piece. There are 7-8 significant minerals here.

The first two photos show the “front” or “top” of the specimen. The largest analcime crystal is about 4.5 x 5.5 cm. A close-up of this crystal is shown in the fifth photo. The bright yellow-orange “triangle” is a gemmy genthelvite aggregate about 7-8 mm across. The third and fourth photos provide a close-up of the genthelvite.

There are also several kupletskite crystals. Most are more or less encrusted by small natrolite/gonnardite crystals. Two well formed groups, each 14 mm high, are shown in the sixth and seventh photos. These two groups can also be seen in the first two photos and, more clearly, at top and center left in the fifth photo. The eighth photo shows a smaller (11 mm) crystal. This crystal is less typically shaped, but it is the only one that is not encrusted. It is not visible in the other photos.

Originally, the genthelvite was nearly as encrusted as the kupletskite, but the natrolite/gonnardite is slowly disintegrating and can already be removed, to some extent, from the kupletskite as well.

Long “spears” of aegirine and large (but imperfect) crystals of tabular microcline can be seen in the first two photos. A few of the smallest aegirine crystals are well terminated, but most terminations are “frizzled” or broken.

There are also some platy catapleiite crystals. Most are just “flakes”, but here and there are some well formed, though very small, crystals. The largest (3 mm) and best one is shown in the last photo, along with the tip of another kupletskite xl. (There are two or three additional kupletskite crystals.)

This pegmatite also had small blue-green fluorite of complex habit and a bit of petersenite-(Ce) (or similar). But these are not significant here.

Weight 15.1 oz. This item will be shipped double boxed for protection. Single item shipping weight 26 oz. The quoted postage and packing rate applies up to a total weight of 32 oz (900 g). Within the USA, I will use Priority Mail. 

Please see my "Shipping Policy" for details.