Wulfenite, Mimetite, on Amethyst, Baryte, etc. Rowley Mine, Maricopa Co, Arizona

Description: Wulfenite & Mimetite on druzy Amethyst, Baryte, etc. Rowley Mine, Theba, Painted Rock Mining District, Painted Rock Mountains, Maricopa County, Arizona, USA 4.5 x 5.5 x 2 cm This is a nice plate with gemmy wulfenite crystals and fuzzy orange mimetite on a bed of druzy amethyst and quartz / chalcedony incompletely pseudomorphing larger, tabular baryte crystals. Amethyst from Rowley is fairly uncommon; this is a nice association. Some of the wulfenite crystals are damaged, but many are perfect - see the video. This specimen will come securely mounted in the pictured oversized perky box to keep the wulfenite safe / protected. Ex. NM Tech with label About the deposit: Adapted from Mindat. The Rowley Mine is a Cu-Pb-Au-Ag-Mo-V-baryte-fluorspar mine located on the western edge of the Painted Rock Mountains, approximately 27 miles west and north of Gila Bend. It was first discovered in 1900, and mining commenced about 1909. Production ceased by 1923. Flat-lying Tertiary andesite flows underlie the Jack Rowley claims and the adjoining San Carlos claims. Mineralization is the Rowley vein. The primary structure is a 4,000-foot fault zone with a quartz vein on the footwall and baryte vein on the hanging wall. The mineralized fault strikes 30ºN to 37ºW and dips 37º to 50ºE., cutting these rocks and extending about 4,000 feet across multiple claims. The quartz vein has a fairly uniform width of about 5 feet in the main shaft and on the 125 foot level of the Rowley Mine for a distance of about 370 feet. The footwall contains no fault gouge or breccia. A few widely spaced tight fractures cut the vein and extend a few feet into the andesite. The vein is massive; nowhere is it brecciated or greatly fractured. There is no gossan or leached zone in or near the vein and no evidence of a zone of enrichment at depth. Massive quartz and a minor amount of jasper compose most of the vein material, but a small amount of specular hematite and sparse grains of pyrite are present. Some of the quartz is rust-colored from small amounts of hematite and limonite that occur both as inclusions and as stains from weathering of iron minerals in the andesite. Several persistent bands of malachite and chrysocolla, 1 to 2½ inches (2.5 to 6.25 cm) thick, occur within the quartz. These minerals also occur for distances as much as 3 feet along isolated fractures that cut the vein and extend into the andesite. Small pockets of high-grade oxide copper ore and a small amount of chalcocite have been reported. The barite vein in the hanging wall of the Rowley vein structure ranges from 15 to 30 feet in thickness. Its contact with the quartz vein is sharp and regular, whereas the hanging wall is very irregular. Gouge, 4 inches (10 cm) thick, separates the barite from a 3 to 4-foot zone of fractures and slightly brecciated andesite. Inclusions of andesite are present in the vein within 10 feet of the hanging wall. Baryte usually occurs as masses of stringers parallel to the strike of the vein, although some of the stringers are contorted and even bend through an arc of 180º. Galena is associated with the baryte. One pod 5 inches in diameter was seen, and reportedly pods of galena were once mined. Small amounts of calcite are also present. Molybdenum minerals are present in both the quartz and barite veins near their common contact. Ferrimolybdite forms a thin partial coating on the walls of the main shaft from the surface to a depth of 50 feet. At greater depth, small stringers containing minute crystals of wulfenite are present in the shaft walls. Some of the stringers cut through the narrow bands of malachite and chrysocolla. Existing workings included the main inclined shaft (the No. 1) at 265 feet deep, an inclined shaft (the Jones Shaft), at 125 feet deep, and a vertical shaft 163 feet deep. There are also perhaps as much as 1,850 feet of drifts. The 125-foot level followed the vein for 370 feet. ShippingDomestic shipping via USPS priority flat rate, international shipping is available at cost. For smaller items, I can usually get economy shipping if you ask. I do not currently ship to China or Italy without special arrangements. About me My name is Jason Utas and I have been collecting and hunting for meteorites since 1998. I am currently a graduate student studying geochemistry at UCLA. Thanks for looking! Click here to view my other items.

Price: 40 USD

Location: Los Alamos, New Mexico

End Time: 2025-01-13T20:43:01.000Z

Shipping Cost: N/A USD