Mineral Specimen #4381 Rubyjack Sphalerite, Quartz, Fluorite, Micro Octahedral Pyrite
Hardin Co., Illinois
4.9 x 3.8 x 3.4 cm
1.9 x 1.5 x 1.3 in
Ex. A. Neely, 1960s
Within a shallow vug on this specimen, there are a number of very nice Rubyjack Sphalerite crystals which are gemmy and exhibit a rich reddish brown color. The Sphalerite crystals are quite sparkly and rest on a bed of micro, druze Quarts crystals with a few small, purple Fluorite crystals mixed in. On the other side of the specimen, there are purple Fluorite crystals and a white druze of micro Quartz crystals. Scattered across the druze Quartz are numerous, micro, octahedral Pyrite crystals. Pyrite crystals were uncommonly encountered in Hardin County.
Flaws: The largest Fluorite crystals are incomplete. Also, the edges around the vug containing the Rubyjack are composed of massive material. Also, there is some residual, brown colored glue from when the specimen was mounted onto stryofoam.
This mineral is also found in the following galleries: Minerals From the United States | Sulfides and Sulfosalts | Fluorite | Quartz | Minerals Priced Between 25 and 49 Dollars