Julgoldite

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Julgoldite-(Fe²⁺),-(Fe³⁺) & -(Mg) monoclinic
Ca₂(Fe²⁺,Mg)(Fe³⁺,Al)₂[(OH)₂|SiO₄|Si₂O7] · H₂O
Ca₂(Fe³⁺,Mg)(Fe₃₊,Al)₂[(OH,O)₂|SiO₄|Si₂O₇] · H₂O
Ca₂(Mg,Fe²⁺)(Fe³⁺,Al)₂[(OH)2|SiO4|Si₂O₇] · H₂O




Julgoldite
Norway
More og Romsdal, Norddal, Tafjord, Tafjord tunnel
Some fine Julgoldites were found at this locality associated with fine gem quality Datolite specimens.

Rock Currier
Crystals not pistols.



Edited 3 time(s). Last edit at 10/07/2009 08:16PM by Rock Currier.

Julgoldite was found as small greenish black crystals mainly as inclusions in a second generation of clear calcite crystals, but also as inclusions in yellow datolite crystals from cavities encountered 1 km from the western entrance in the road tunnel from Fjøre to Tafjord during the construction in 1980 and 1981. Only a small number of such specimens were saved.

Crystals of Julgoldite included in a 1,5 cm crystal of calcite from the Tafjord tunnel, Møre og Romsdal, Norway.

Knut



Edited 1 time(s). Last edit at 10/08/2009 09:46PM by Knut Eldjarn.