{"id":2487,"date":"2019-10-02T19:54:17","date_gmt":"2019-10-02T19:54:17","guid":{"rendered":"https:\/\/www.gsnv.org\/shop\/quartz-alunite-alteration-cells-in-the-southern-segment-of-the-ancestral-cascades-magmatic-arc\/"},"modified":"2020-02-24T18:17:52","modified_gmt":"2020-02-24T18:17:52","slug":"quartz-alunite-alteration-cells-in-the-southern-segment-of-the-ancestral-cascades-magmatic-arc","status":"publish","type":"product","link":"https:\/\/www.gsnv.org\/shop\/quartz-alunite-alteration-cells-in-the-southern-segment-of-the-ancestral-cascades-magmatic-arc\/","title":{"rendered":"Quartz-alunite alteration cells in the southern segment of the Ancestral Cascades Magmatic Arc"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>At least 40 alteration cells characterized by hydrothermal quartz and alunite occur<br \/>\nin the southern segment of the ancestral Cascades magmatic arc from Portola,CA<br \/>\nto Goldfield, NV. Significant amounts of Au, Ag, Cu and S\u00ba (elemental sulfur) were<br \/>\nproduced from 6 cells (Goldfield, Paradise Peak, Borealis, and Ramsey, NV; Masonic<br \/>\nand Monitor, CA), 3 cells contain Au, Ag, and S\u00ba resources (Isabella-Pearl, NV;<br \/>\nGolden Dome and Cinnabar Canyon, CA), and minor amounts of Au, Ag, Cu, and Hg<br \/>\nhave been produced from several cells, but no appreciable metal concentrations have<br \/>\nbeen identified in most cells. Cell exposures vary from ~ 70 km2 (Goldfield) to hundreds<br \/>\nofm2 (Mystic, CA), and have known vertical dimensions of hundreds of meters.<br \/>\nCells range in age from about 22 Ma (Goldfield and Pyramid, NV) to 4 Ma (Painted<br \/>\nRock, CA). Most cells formed in andesite and dacite flows and subvolcanic intrusions<br \/>\nimmediately after their eruption and\/or emplacement, and are confined to these<br \/>\nslightly older (0 to 2 Ma) volcanic rocks, although several cells (Goldfield; Masonic;<br \/>\nGolden Dome) partly formed in Mesozoic and Paleozoic rocks.<\/p>\n","protected":false},"featured_media":4550,"comment_status":"closed","ping_status":"closed","template":"","meta":{"pmpro_default_level":""},"product_cat":[154],"product_tag":[],"_links":{"self":[{"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/product\/2487"}],"collection":[{"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/comments?post=2487"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/media\/4550"}],"wp:attachment":[{"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/media?parent=2487"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/product_cat?post=2487"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.gsnv.org\/wp-json\/wp\/v2\/product_tag?post=2487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}