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Remarkable Piece of Missouri’s Subterranean History
Presented by KeepsCache, this is a museum-quality, 16 lb flowstone \"lip\" specimen. This beauty of a piece was found 20 feet or so outside the spring below the Fortress Keep Mine in Jefferson County, Missouri and it managed to make it through an opening near equal to its circumference then drop 11\' in its 20\' journey under the Ozark forest canopy without breaking or becoming severely damaged...so I could be good luck lol.
This piece is a stunning example of secondary mineral deposits, featuring a perfectly intact \"lip\" formation—a rare find in this size and weight. The specimen has been meticulously cleaned to highlight its natural beauty while preserving the delicate structural integrity of the formation.
Rare Dual-Light Reaction: > Not only does this piece fluoresce beautifully under 365nm UV light, but it also possesses strong phosphorescence. When the UV light is removed, the specimen continues to emit a ghostly, ethereal glow for several seconds. This \"afterglow\" is a rare characteristic for Missouri flowstone and makes it a standout interactive display piece.
Key Features:
Unique Formation: Features a distinct, protruding \"lip\" structure that demonstrates the slow, natural drip-and-flow process over thousands of years.
Visible Banding: Striking growth layers (banding) are visible throughout the piece, offering a cross-section look at the geological history of the Fortress Keep.
UV Reactive and Phosphorescent:
Like high-quality Missouri calcite, this specimen exhibits a beautiful fluorescence under 365nm UV light, making it a dynamic addition to any display.
Statement Size: Weighing in at a substantial 16 lbs, this is a heavy, \"centerpiece\" specimen perfect for shelves, offices, or mineral galleries.
Specimen Specifications:
Weight: ~16 lbs
Origin: Fortress Keep Mine, Jefferson County, MO
Mineral: Banded Calcite (Flowstone)
Condition: Cleaned and stable. Natural textures and formations are fully preserved.
Shipping & Handling
Due to the weight and unique structure of this piece, it will be double-boxed and secured with premium packing materials to ensure it arrives at your door in the same condition it left the mine.
Shipping: No worries i\'ve got ya, its free shipping on his one
Returns: 30-day return policy; buyer pays return shipping.
About KeepsCache
We specialize in sourcing unique minerals, fossils, and historical artifacts with a great deal of our stock being self collected when possible and many older specimens hunted down and purchased from retired miners or surviving family members. When you buy from KeepsCache, you are getting a piece of history directly from the source. I do not import minerals that can be sourced in he U.S. I sell Missouri Lace Agate not crazy lace from Central America i\'ll go with an Ozark diamond over a blood diamond any day an Idaho or Missouri opal over an Australian.its our treasures beneath our feet. Our family friends and neighbors bring these to the surface for a reason, we have world class in our own back yard all day long. In my back yard we have world class mines manned by some straight up world class miners working in what has consistently been one of the world largest lead producing districts in the world and with it zinc copper and the sexiest Calcite ever to see the sun lol (not a joke as ya know) tip my hat to the men down at Sweetwater, Brushy & Fletcher...all of em working the Viburnum trend. They bring em up and we are more than happy to bring em to ya. from our calloused cracked hands to yours, Enjoy
![16lb Phosphorescent Flowstone \](img-large/g/GsQAAeSwC7lpe4NS/s-l1600/16lb-Phosphorescent-Flowstone-Lip-Fortress-Keep-Mi.jpg "16lb Phosphorescent Flowstone \")
