Fluorite, Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine), Ozark-Mahoning group, Cave-in-Rock, Hardin County, Illinois, USA
Size: 12.4x8.3x6.5cm
Species: Fluorite with Calcite
Locality: Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine), Ozark-Mahoning group, Cave-in-Rock, Hardin County, Illinois, USA
Description: This is a wonderful Illinois fluorite for a number of reasons. The first simply being the color, which is one of the most important attributes of a fluorite specimen. The saturation of the blue and purple zonation’s in this specimen are bright and vivid as would be expected in a quality specimen. Secondly the specimen is of good size with the primary cube measuring over 7.5cm on edge. Lastly the specimen features a nice accent of dogtooth calcites which are distributed across the specimen adding contrast in both color and geometric form to the specimen. Finding a Illinois fluorite of this caliber has become quite difficult since with most of the productive fluorite mines in the district have been closed for a number of decades. Please note that the specimen in this photo has backlighting as would be common in any quality mineral display case.
Displayed in my Illinois fluorite suite during the first year of the Hard Rock Summit held in Denver, Colorado in 2021.
Size: 12.4x8.3x6.5cm
Species: Fluorite with Calcite
Locality: Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine), Ozark-Mahoning group, Cave-in-Rock, Hardin County, Illinois, USA
Description: This is a wonderful Illinois fluorite for a number of reasons. The first simply being the color, which is one of the most important attributes of a fluorite specimen. The saturation of the blue and purple zonation’s in this specimen are bright and vivid as would be expected in a quality specimen. Secondly the specimen is of good size with the primary cube measuring over 7.5cm on edge. Lastly the specimen features a nice accent of dogtooth calcites which are distributed across the specimen adding contrast in both color and geometric form to the specimen. Finding a Illinois fluorite of this caliber has become quite difficult since with most of the productive fluorite mines in the district have been closed for a number of decades. Please note that the specimen in this photo has backlighting as would be common in any quality mineral display case.
Displayed in my Illinois fluorite suite during the first year of the Hard Rock Summit held in Denver, Colorado in 2021.
Size: 12.4x8.3x6.5cm
Species: Fluorite with Calcite
Locality: Minerva No. 1 Mine (Ozark-Mahoning No. 1 Mine), Ozark-Mahoning group, Cave-in-Rock, Hardin County, Illinois, USA
Description: This is a wonderful Illinois fluorite for a number of reasons. The first simply being the color, which is one of the most important attributes of a fluorite specimen. The saturation of the blue and purple zonation’s in this specimen are bright and vivid as would be expected in a quality specimen. Secondly the specimen is of good size with the primary cube measuring over 7.5cm on edge. Lastly the specimen features a nice accent of dogtooth calcites which are distributed across the specimen adding contrast in both color and geometric form to the specimen. Finding a Illinois fluorite of this caliber has become quite difficult since with most of the productive fluorite mines in the district have been closed for a number of decades. Please note that the specimen in this photo has backlighting as would be common in any quality mineral display case.
Displayed in my Illinois fluorite suite during the first year of the Hard Rock Summit held in Denver, Colorado in 2021.
