$300Median
113Sold (12 mo)
$110Last sale
Marcasite
- Free shipping
- Seller offers an extended return window of up to 14 days
Ships from USA
A brilliant cluster of sharp golden marcasite crystals with little attached crystallized calcite. The marcasite crystals are twinned and in great condition. A superb miniature for the species for this locality.The Linwood Mine, located in Scott County, Iowa, is a large limestone quarry that works Mississippian age carbonate rocks and has become well known among collectors for its mineral specimens. Quarrying has exposed numerous cavities and bedding plane openings where secondary minerals have formed from circulating fluids. Among the most notable is marcasite, which occurs as well crystallized specimens often forming sharp, radiating groups, cockscomb aggregates, and distinct tabular crystals with a bright metallic luster. These marcasite crystals developed under low temperature conditions in the sedimentary environment, where iron sulfide precipitated from mineral rich solutions.
Product details
Current owner
WM
Weinrich MineralsFeatured
Learn more
Mineral guide
Learn about Marcasite
orthorhombic dimorph of pyrite with cockscomb blade clusters, metallic luster and iridescent tarnish; prized for sculptural form yet requires caref…Regional guide
Comments