NWA 10695 (Anomalous Howardite)

One stone weighing 103.4g was purchased from a Moroccan dealer at the Tucson Gem and Mineral Show in February of 2016. A sample of this stone was sent to Dr. Anthony Irving who determined the stone to be an Anomalous Olivine-Bearing Metal-Rich Howardite. This stone is ONE of only THREE known anomalous howardites, and ONE of THREE known metal-rich howardites (a couple metal-rich howardites didn’t have the anomalous designation). This stone most likely came about when the parent body (4 vesta) was bombarded with an H-chondrite impactor and melting it into the host before it was launched back out into space.

I prepared the slices which will come in a quality labeled meteorite display box.  EACH AND EVERY SLICE is LOADED with metal. If you didn’t know any better, you would think this was an H6 chondrite!  Several slices even feature metal rimmed armored clasts and mesosiderite-like metal inclusions!

Slice descriptions containing a “*” have an extra $30 included in the cost of the slice to make up for the cutting costs associated with having a second batch of slices professionally cut.

Petrography as follows:

Breccia composed mainly of diogenite lithic clasts and related debris plus ~20 vol.% of basaltic eucrite clasts and ~3 vol.% of altered kamacite grains (up to 1 mm in size) in a finer grained matrix. Diogenitic orthopyroxene exhibits a range in composition. Other minerals are olivine, exsolved pigeonite, calcic plagioclase, silica polymorph, chromite, ilmenite, troilite, taenite and rare forsterite. Olivine (Fa28.1-31.0, FeO/MnO = 42-53, N = 2), diogenitic orthopyroxene (Fs23.0Wo1.9; Fs39.1Wo3.1; FeO/MnO = 29-30, N = 2), orthopyroxene host (Fs65.0Wo3.4, FeO/MnO = 31), clinopyroxene exsolution lamella (Fs32.4Wo39.9, FeO/MnO = 31), orthopyroxene host (Fs38.6Wo3.2, FeO/MnO = 29), clinopyroxene exsolution lamella (Fs18.2Wo40.9, FeO/MnO = 24), forsterite (Fa9.4, FeO/MnO = 43).

Meteoritical Bulletin entry can be found here.

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