Montebrasite with Siderite and Apatite (rare combo)

Item Description

Here we have a rarely seen association specimen from the Telírio Claim in Linopolis, Brazil featuring translucent, sharp, lustrous pale greenish-yellow crystals of Montebrasite measuring up to 3.1 cm with several hexagonal blue and green bi-colored crystal of Apatite (presumably Fluorapatite) along with rarely seen, somewhat gemmy, golden rhombic crystal of Siderite measuring 1.1 cm along with minor colorless Quartz on white bladed Albite (var: Cleavelandite) matrix. I have never seen Montebrasite with both Apatite and Siderite like this on the same specimen from Brazil. You don't see many matrix specimens of Montebrasite as it is, and to have these unusual associated minerals is a big deal. It should be noted that a lot of these pieces were labeled as Amblygonite for years, but it turns out that virtually all of them are Montebrasite, and confirmed Amblygonite is a notably rare species. You may never seen another piece like this, so if you collect pegmatite minerals, specimens from Brazil or oddball association pieces, don't miss out on this one. From the collection of Rolando Gioia (a contributor to definitive book on Brazilian minerals: "Minerais e Pedras Preciosas do Brasil").