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Gahnite-Spinel Series - Franklin Mining District, Sussex Co., New Jersey, USA

Posted by Dick England

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Dick England

Gahnite-Spinel Series - Franklin Mining District, Sussex Co., New Jersey, USA
February 27, 2012 01:58PM

The "gahnite" photo looks like a poor specimen of weakly botryoidal goethite. Gahnite usually forms dark green octahedra with a resinous to adamantine lustre. Bad handwriting on the card?

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