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A rare Franklin assemblage of margarosanite, axinite, orange (under shortwave) clinohedrite, dark blue fluorescing xonotlite, willemite and possibly many other Franklin rare minerals.
Margarosanite is a rare calcium lead silicate mineral that shows a beautiful short wave fluorescent response that ranges from blue/white to pastel shades of purple, pink and lavender. For these reasons it is one of the most coveted (and expensive) fluorescent minerals.
First discovered in the Parker Shaft of the famous Franklin mine, in Franklin, Sussex County, New Jersey. A lesser variety of Margarosanite is also found at some of the mines in Filipstad, Varmland County, Sweden, such as Langban and Jakobsberg.
The Garpenberg mine is located in Bergslagen, a very old mining area in the southern part of Sweden.
The mine is very active today and is one of Europe's most progressive underground mining operations. Collecting is not possible, and the few specimens that reach collector's hands are highly prized. The mineralogy is quite similar to that of Franklin NJ.
