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Mineral Specimen #6518    Quartz, Sphalerite, possible Galena and Hydrozincite

Swalley Mine, Baxter Springs, Picher Field, Tri-State District, Cherokee Co., Kansas

14.4 x 11.7 x 6.3 cm
5.7 x 4.6 x 2.5 in

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Ex. Robert Gannon


A plate composed of stubby, white colored, translucent Quartz crystals with a high, glassy and sparkly luster. The Swalley mine was one of the few mines in the Tri State district which produced good Quartz specimens. Intermixed amongst the Quartz crystals are dark colored Sphalerite crystals. The Sphalerite crystals appear almost black in color; but, with back lighting, a few crystals show glints of dark red. The Sphalerite crystals are well formed with complex faces and a high sub metallic luster. There is also present an unidentified, off white colored material on the bottom of the specimen. My first thought was it might be Calcite but there is no immediate reaction when exposed to HCl. By chance, when taking fluorescent pictures of some other specimens, it was noticed the specimen fluoresces under SW UV. For the most part, the color is a dull creamy yellow but there are spots of bright, light blue. The fluorescence comes from within the Quartz crystals, apparently from inclusions. This is particularly true of the blue patches. Best guess on the fluorescing material is Hydrozincite which is known from the Tri State district and can form from Sphalerite. There are also what appear to be a few dull, Galena crystals which are mostly covered with Quartz crystals.

Condition: Very Good

Flaws: One of the Sphalerite crystals on the side of the specimen is damaged.

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

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