This is a fantastic example of MSH UK86. Supposedly UK86 is altered erdite – which makes it quite interesting. However, it is not very likely to be a new mineral. In fact, the qualitative EDS scan for this specimen shows nothing but Fe with very minor Si, Ca, and K – i.e. it is probably “rust”. (See the “Analysis” tab.) If this started out as erdite, then all of the S and Na is long gone. Nonetheless, this is a very desirable specimen for MSH. It is the only one that I have.

FOV in the first pair of photos is 6.7 x 7.5 mm. The individual crystals are up to 3.0 mm long. The aggregate spans ca 6 mm.

The second pair of photos is just a slightly broader view.

Single item shipping weight (with MIN case) is 4.8 oz (136 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 $4.50 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).