Image: Grandviewite, Grandview Mine, type locality

Description: GRCA_108407_ While Grand Canyon is most famous for vast views of towering cliffs, it holds additional geologic treasures, some as tiny as the delicate blue-green needles of a grandviewite crystal. Pete Berry and partners developed the Grandview Mine from two mining claims filed in 1890. The Grandview Trail was built in 1892-1893 to service the mine to haul ore out of the canyon by pack train. The ore consisted mostly of copper sulfate minerals including cyanotrichite, brochantite, and chalcoalumite, along with copper carbonates such as azurite and malachite. Like many historic mines in Grand Canyon, including the Orphan Mine, the mineralized zone is in a breccia pipe, which is a cylindrical mass of highly fractured rock. In the Grand Canyon region, breccia pipes formed from the collapse of solution caverns in the Redwall Limestone. The highly porous brecciated rock in these features was mineralized by copper- and/or uranium-bearing fluids. Learn more here: <a href="http://www.nps.gov/grca/naturescience/cynsk-v25.htm" rel="nofollow">www.nps.gov/grca/naturescience/cynsk-v25.htm</a> NPS photo by Michael Quinn
Title: Grandviewite, Grandview Mine, type locality
Credit: Flickr: Grand Canyon National Park: Grandviewite
Author: Public Domain
Permission: This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 4 January 2013, 18:57 by Tillman. On that date, it was confirmed to be licensed under the terms of the license indicated. This file is licensed under the Creative Commons Attribution 2.0 Generic license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. https://creativecommons.org/licenses/by/2.0 CC BY 2.0 Creative Commons Attribution 2.0 truetrue
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