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Ideal Chemistry
Pb
5
(PO
4
)
3
Cl
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Ex. Gary and Terry Butts. Les Farges is simply one of the premier localities in the world for pyromorphite specimens. While it may not be the type locality for the species, Les Farges is still one of the great classic European localities, producing some of the most iconic examples of pyromorphite known. This piece is a great overall display specimen from this classic locality featuring sharp, lustrous, golden-green colored hexagonal prisms sitting atop oxidized matrix. You can see that some of the crystals have little yellow "caps" in the close-up photos. Most of the pyromorphite crystals are undamaged, and look beautiful under magnification. The largest crystal measures 6 mm long. The piece sits wonderfully on its own without the aid of a base or clay, and the intricate three-dimensional form is extremely eye-catching A great piece for anybody who likes pyromorphite, old classics from Europe or minerals of France. From the collection of Gary and Terry Butts of Livermore, Colorado. This husband and wife collecting duo were childhood sweethearts, and have been together since they began dating as teenagers growing up in East Des Moines, Iowa in the 1950s. Both of them had an early interest in the hobby thanks to the fact that Terry's parents had a keen interest in lapidary, which sparked an interest in rocks for both of them. Gary and Terry were featured in an article in the Des Moines Register on Feb 4, 1962 (see photo in this listing) highlighting their interest and prowess in the hobby as youngsters. Gary traveled to various localities around the US as a teenager with his father (who worked in the tin industry), to personally collect specimens. He then attended the School of Mines in Golden, Colorado and graduated in 1967 with a degree in extractive metallurgical engineering. We went to work for Duval Corp at the Esperanza mine south of Tucson, Arizona and then work for Cyprus mines, Hazen Research, Pincock, Allen & Holt and the Colorado School of Mines Research Institute. His final job was in the mineral and environmental division of Intertek Testing Services of London, which owned the Canadian mineral testing company, Bonder Clegg. Gary's various jobs allowed him to travel the world and build his collection by buying a lot of specimens in person when they were coming out of the ground. Additionally, Terry's uncle was a miner in Creede, Colorado and later owned a rock shop which supplied Gary with specimens from the area. The specimens in this auction represent what Gary and Terry considered the "cream of the crop" of their collection.
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File was made public on 2026-06-11
Uploaded 2026-06-11 by Bob Downs
549.6 Kb
D107__Pyromorphite__Label.png
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