Stunning Blue Fluorite Mineral Specimen. Locality: Minerva Mine No. 1 Mine, Qzark-Mahoning Group, Cave-In-Rock Mining Sub-District Hardin County, Illinois, USA.

SIZE: 59mm x 46mm
WEIGHT: 74 grams

Blue fluorite from the Minerva Mine No. 1 in Cave-In-Rock, Illinois, is renowned for its stunning appearance and unique properties. The Minerva Mine No. 1 was part of the Illinois-Kentucky fluorspar district and was the largest orebody in that district. The mine operated from the early 1940s until 1996 and produced some of the most beautiful mineral specimens found in the area.

Blue fluorite from this mine often exhibits a vibrant blue color and can show fluorescence under UV light. The fluorescence is typically blue due to trace amounts of rare earth elements (REEs) in the fluorite crystal structure. Some specimens also contain hydrocarbon inclusions that fluoresce bright white under UV light, adding to their visual appeal.

Disclaimer: This is a natural crystal sold as is and as you see it in its images and video. It is the exact one you will receive. It may contain natural imperfections. Please make sure to read the sizing, and description before purchasing Blue Fluorite Mineral Specimen.