Powellite Minerals
Powellite, a calcium molybdate mineral and the molybdenum analogue of scheelite, occurs at both Franklin and Sterling Hill. It is commonly colorless to very light greenish-yellow with greasy to adamantine luster and fluoresces with a moderate yellow color in shortwave ultraviolet and a weaker yellow in longwave. It occurs as alterations of molybdenite crystals at both deposits.At Franklin, powellite is associated with microcline, willemite, apatite, molybdenite, and calcite, in a light-colored rock.
Description
Powellite, a calcium molybdate mineral and the molybdenum analogue of scheelite, occurs at both Franklin and Sterling Hill. It is commonly colorless to very light greenish-yellow with greasy to adamantine luster and fluoresces with a moderate yellow color in shortwave ultraviolet and a weaker yellow in longwave. It occurs as alterations of molybdenite crystals at both deposits.At Franklin, powellite is associated with microcline, willemite, apatite, molybdenite, and calcite, in a light-colored rock.
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