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the boundary between crystals is about halfway between points)
A later phase of calcite growth encased much of the wulfenite inside glittering
Approx dimensions: 4 x 3 x
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Siderite on pyrite pseudomorph Fluorite the boundary between crystals isLocale: 10 Silicate ore body, Potos Mine, Santa Eulalia, Chihuahua, Mexico Approx dimensions: 4 x 2. 25 x 2. 25" Approx weight: 608g (1 1 3 lb) This specimen from the Potos Mine has orange yellow siderite on a heavy base. The siderite has formed blade like growth criss crossing the surface, with small pyrite crystals sprinkled throughout. The heavy base is composed of tapered hexagonal barrel crystals. The large hexagonal formation is characteristic
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