Arsenopyrite with Marcasite, Quartz, Siderite

specimen number:
5003716

location:
3 level, Panasqueira Mines, Covilha, Castelo Branco, Portugal

description:
A grouping of glassy partly gemmy double terminated quartz crystals 10.0 cm in length set nicely up on matrix of bright lustrous crystals of arsenopyrite. This is in very good condition all around. Minor crystals of marcasite and siderite present as well. Collected in 1999.

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