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Ferri-winchite 2.98 ct.



60,00 €

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Ferri-winchite  2.98 ct.

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is relate to one of the many amphibole-group mineral with formula

([ ],Na)(Na,Ca)2(Mg, Fe++)4Fe+++[Si8O22](OH)2 and hardness of 5-6.

Here is associate with jacobsite a dark brown manganese iron oxide mineral.

It comes from Langban,Filipstad,Värmland -Sweden.

Glowing in orange red on short wave due to calcite layers.

Size: 6.1x8x5.5 mm.

Weight: 2.98 ct.


Origin Svezia

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