![Aragonite (Var: Lead-bearing Aragonite) (Ca,Pb)CO3](https://static.wixstatic.com/media/f4ef11_016410096e51428790884e69d01f7ec5~mv2.png/v1/fill/w_196,h_147,fp_0.50_0.50,q_95,enc_auto/f4ef11_016410096e51428790884e69d01f7ec5~mv2.webp)
Aragonite (Var: Lead-bearing Aragonite) (Ca,Pb)CO3
Tarnowitzite, a lead bearing variety of aragonite. Some say that tarnowitzite is a mix of aragonite and cerussite. It fluoresces white under
![](https://static.wixstatic.com/media/c24caa_0b25725973d84e8fa4896f9768db82f0~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/c24caa_0b25725973d84e8fa4896f9768db82f0~mv2.webp)
![Hyalite-Coated Chalcedony and Fluorite, SK Star Claim #2, Juab Co., Utah](https://static.wixstatic.com/media/c24caa_0b25725973d84e8fa4896f9768db82f0~mv2.jpg/v1/fill/w_196,h_183,fp_0.50_0.50,q_90,enc_auto/c24caa_0b25725973d84e8fa4896f9768db82f0~mv2.webp)
Hyalite-Coated Chalcedony and Fluorite, SK Star Claim #2, Juab Co., Utah
This interesting and unique fluorescent specimen looks like something you'd expect to find in an underwater coral reef. Collected from...
![](https://static.wixstatic.com/media/c24caa_9495309456ee4b3a9762abc33521b074~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/c24caa_9495309456ee4b3a9762abc33521b074~mv2.webp)
![Watermelon Calcite, Buffalo Gap Grasslands, South Dakota](https://static.wixstatic.com/media/c24caa_9495309456ee4b3a9762abc33521b074~mv2.jpg/v1/fill/w_196,h_147,fp_0.50_0.50,q_90,enc_auto/c24caa_9495309456ee4b3a9762abc33521b074~mv2.webp)
Watermelon Calcite, Buffalo Gap Grasslands, South Dakota
This material is known as "watermelon calcite" or "watermelon rock" due to its colorful red and green fluorescent response under UV. This...
![](https://static.wixstatic.com/media/c24caa_afe1b3ca1cf343ef8092766fdde917f4~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/c24caa_afe1b3ca1cf343ef8092766fdde917f4~mv2.webp)
![Selenite and Chalcedony, Hay Springs, Nebraska](https://static.wixstatic.com/media/c24caa_afe1b3ca1cf343ef8092766fdde917f4~mv2.jpg/v1/fill/w_196,h_147,fp_0.50_0.50,q_90,enc_auto/c24caa_afe1b3ca1cf343ef8092766fdde917f4~mv2.webp)
Selenite and Chalcedony, Hay Springs, Nebraska
This unusual fluorescent specimen consists of crystals of honey-brown selenite sandwiched between two layers of light grey chalcedony....