Schorenbergite. Eifel.

This is a thin section of an exceedingly rare (if not unique) volcanic rock from Schorenberg Volcano near Rieden in the Eifel, Germany. Featured in the red Atlas igneous rocks (MacKenzie et al.) Isotropic Nosean with centres of dark inclusions arranged in cubic form. Spots of Leucite showing grey twinning, in a matrix of aegirine, leucite and sanidine.  Very Rare, hence high starting price. Limited material. Nosean has a rim of hematite. From Auf den Hardt. Rieden.

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