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Pyrite Sun [149387]

Currency:USD Category:Collectibles / Rocks, Fossils & Minerals Start Price:75.00 USD Estimated At:150.00 - 250.00 USD
Pyrite Sun  [149387]
SOLD
160.00USDto M********9+ buyer's premium (40.00)
This item SOLD at 2022 Jun 04 @ 11:11UTC-7 : PDT/MST
SHIPPING & HANDLING: The customer is responsible for all shipping and packaging charges. We offer shipping service as a convenience to our buyers. Items are not shipped until the invoice and shipping charges are completely paid. Shipping costs will be calculated and billed separately after your items have been paid for. Purchases will be shipped via our approved, insured carriers: FedEx, UPS, USPS or DHL. Pick up is available from our Reno office, once you have received your invoice post auction
This Pyrite Sun is 3.5 inches in diameter on black slate 9.5 x 7 x 1.5 inches. Often called Marcasite Suns because the visible crystal form can appear to be orthorhombic, however, X-ray diffraction analysis of these suns shows that the composition is mostly pyrite, which is cubic. The two minerals are polymorphs, meaning that they have the same chemical makeup (FeS2) but different crystal structures. Marcasite has a nasty tendency to oxidize and crumble in collections, leading to the formation of free sulfur and sulfuric acid, which can then eat away at labels and boxes. Provenance: Chunlin Zhu Collection