Franklinite Mineral Specimen 1.5 lb with Calcite/Willemite, Used

Own a piece of geological history with this substantial 1.5 lb raw Franklinite specimen from the world-famous Franklin Mining District in Sussex County, New Jersey. This classic American mineral is sought after by collectors for its historical significance and its association with some of the world's most brilliantly fluorescent minerals. An essential addition for any serious mineral collector or enthusiast of unique geological treasures.Detailed Description:This is a handsome, weighty specimen of raw Franklinite. The primary mineral, Franklinite (a zinc-iron-manganese oxide in the spinel group), presents as a dense, dark black mass with a characteristic sub-metallic luster. This piece is an excellent example of the ore that made the Franklin mines legendary.Origin & Significance: This specimen was sourced directly from Franklin, New Jersey, a locality that is unparalleled in the mineral world. The Franklin orebody is known for producing a combination of minerals found nowhere else on Earth, including over 350 different mineral species and dozens that are unique to the location. Owning a piece of Franklinite is owning a part of this unique geological and mining heritage.Collector's Highlights & Fluorescence: The true magic of specimens from Franklin is revealed under ultraviolet light. While Franklinite itself is not fluorescent, it is almost always found in a matrix with highly fluorescent minerals.Under a shortwave (SW) UV light, look for associated minerals to glow. Willemite will fluoresce a brilliant, electric green, and Calcite will glow a vibrant orange-red. The presence of this fluorescence dramatically increases the value and desirability of the specimen.Condition:This is a raw, natural mineral specimen, unaltered from its natural state. It displays natural textures, potential crystal faces, and contact points from where it was extracted. It has been cleaned of loose debris but is otherwise completely natural.Specifications:Primary Mineral: FrankliniteAssociated Minerals: Potentially includes Calcite, Willemite, ZinciteOrigin: Franklin, Sussex County, New Jersey, USAWeight: 1.5 lbs (approx. 680 grams)Dimensions: Approximately 3.5 inches at its longest measurementLuster: Sub-metallicKey Features: Classic US mineral locality, high potential for brilliant SW UV fluorescence.Keywords for Search:Franklinite, Fluorescent Mineral, Willemite, Calcite, Raw Mineral Specimen, Franklin New Jersey, Sterling Hill, UV Rock, Geology, Collector's Mineral, Spinel Group, Zinc Ore, Franklin Furnace, Natural History, American Mineral, Crystal, Rock and Mineral.