W. L. Deardorf Mine, Cave-In-Rock, Illinois

9.4 x 6.7 x 6.1 cm
3.7 x 2.6 x 2.4 in

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early 1960s or earlier

This specimen is composed primarily of small, squat Quartz crystals in spherical aggregates some of which are in thin, curved and convoluted, double sided masses. The color of the Quartz is white with a gray tint and has a high luster, which with all of the small surfaces, gives the specimen a lot of sparkle on all but one side. There are also four cubic purple colored Fluorite crystals the largest of which is 8 mm across. There is one solitary cubic Galena crystal of similar size. On one side of the specimen, there is a coating of off white colored, small bladed Calcite crystals intermixed with dark colored, small Sphalerite crystals.

Condition: Good

Flaws: Some wear on the Calcite crystals. The corners of the Fluorite crystals are cleaved. One small, brusied area on the druze Quartz and there is a curved, contact area.

From the Robert Gannon collection

This mineral is also found in the following galleries: Minerals From the United States | Quartz | Fluorite | Sulfides and Sulfosalts | Calcite | Minerals Priced Between 100 and 199 Dollars This mineral is also found in the following galleries: Minerals From the United States | Quartz | Fluorite | Sulfides and Sulfosalts | Calcite | Minerals Priced Between 100 and 199 Dollars