Cute specimen of Siderite crystals on Muscovite from the famous Panasqueira mine, Portugal. Displays tabular Siderite crystals to 10mm with olive yellow-green color and some lighter bands forming phantoms. They are lustrous. Muscovite is seen too. For references see the 2014 issue of The Mineralogical Record vol. 45, # 1. In good condition – some nicks and contacts. On acrylic base.

Pretty!