Description
It occurs on some hydrothermal veins or metamorphic deposits. Due to its rarity, it is one of the most interesting Czech minerals.
€338 / $362
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Radial formations composed of black shiny crystals of cronstedtite in paragenesis with brown siderite on a massive quartz matrix. Historical sample from collection of Dr. František Novák.
It occurs on some hydrothermal veins or metamorphic deposits. Due to its rarity, it is one of the most interesting Czech minerals.
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