Franklin Furnace
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Franklin Furnace, also known as the Franklin Mine, is a famous mineral location for rare zinc, iron, and manganese minerals in old mines in Franklin, Sussex County, New Jersey, United States. This loc
Franklin Furnace ca. 1900
Franklinite
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Franklinite is an oxide mineral belonging to the normal spinel subgroup's iron series, with the formula ZnFe3+2O4.
Franklin Furnace
…and more different fluorescent minerals than any other location. The mineral association (assemblage) from Franklin includes willemite, zincite and franklinite. During the mid-to-late 19th century the furnace was the center of a large iron making operation. Russian, Chilean, British, Irish, Hungarian and Polish…
Franklinite (black) with Zincite (red)
A microscopic picture of Franklinite