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The good Samariumitan's Aragonite

Samarium drives the fluorescence of this aragonite/calcite.

It's more of a mix, phases of the carbonates, rather than any pure mineral.

More about this specimen on the MKA fluorescent minerals website.

A spectrum revealing the activator is available for download. 

Locality: Bocchegiano Mines, Tuscanny, Italy 

Source: Fluorescent Minerals Workgroup MKA.

 

 

 

 

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