Andesine & Labradorite from Tibet, Inner Mongolia, Mexico & Oregon: A Tucson Panel Discussion<\/b><\/span>
Moderator: Dana Schorr<\/p>\n

Panelists: Richard Hughes, Ahmadjan Abduriyim, George Rossman, Adolf Peretti with Shane McClure & John Emmett<\/b><\/p>\n

The mining of natural red and green andesine in Tibet and near-colorless andesine in Inner Mongolia has been a subject of controversy. Large quantities of diffusion-treated andesine from Inner Mongolia entered the world markets without proper disclosure starting about 2000; however the idea that there might also be a source of natural red andesine in Tibet has been met with extreme skepticism from some quarters. This has not only polarized the gemological community, but has also created a lack of confidence in natural Oregon sunstone.<\/p>\n

This program will present the latest results from field visits to both Tibet and Inner Mongolia, along with advanced testing of stones from each of those deposits. <\/span><\/p>\n

<\/span><\/div>\n
Simple tests will be described to separate both Tibetan and Inner Mongolian andesines from Oregon sunstones. <\/span>The purpose is to finally put to rest the controversy surrounding these stones.<\/span><\/div>\n

<\/span><\/div>\n
Free samples will be handed out to all attendees. <\/span><\/div>\n","protected":false},"excerpt":{"rendered":"
Andesine & Labradorite from Tibet, Inner Mongolia, Mexico & Oregon: A Tucson Panel Discussion Moderator: Dana Schorr Panelists: Richard Hughes, Ahmadjan Abduriyim, George Rossman, Adolf Peretti with Shane McClure & John EmmettTh…<\/p>\n","protected":false},"author":102,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[4,114,116,5,113,115],"tags":[],"_links":{"self":[{"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/posts\/398"}],"collection":[{"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/users\/102"}],"replies":[{"embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/comments?post=398"}],"version-history":[{"count":2,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/posts\/398\/revisions"}],"predecessor-version":[{"id":587,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/posts\/398\/revisions\/587"}],"wp:attachment":[{"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/media?parent=398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/categories?post=398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/userblogs.ganoksin.com\/tucsongemshow\/wp-json\/wp\/v2\/tags?post=398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}