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Moor's head elbaite

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Roger Warin

Joined: 23 Jan 2013
Posts: 1248

Posted: May 11, 2016 10:48 Post subject: Moor's head elbaite

Hi,
One can say that achroite (a variety of elbaite) is a really pure tourmaline.
What is the chemical origin of the black head of a Moor's head elbaite appearing at the end of crystal growth?
Ferrous cations?
Roger.

039-Elbaite_Maure#3-01_R.jpg

Mineral:

Elbaite (variety achroite)

Locality:

Elba Island, Livorno Province, Tuscany, Italy

Description:

Moor's head.

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