{"product_id":"eisco-raw-rhyolite-igneous-rock-specimen-approx-1-geologist-selected-hand-processed-great-for-science-classrooms","title":"EISCO Raw Rhyolite, Igneous Rock Specimen - Approx. 1\" - Geologist Selected \u0026 Hand Processed - Great for Science Classrooms","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRHYOLITE | Rhyolite is an aphanitic felsic rock which forms during eruptions of thick, viscous magma. Often containing phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that forms rhyolite\u003c\/li\u003e\n\u003cli\u003eGREAT FOR GEOLOGY CLASSROOMS | Ideal for identification \u0026amp; classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks- a good identifier for classification\u003c\/li\u003e\n\u003cli\u003eGEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features\u003c\/li\u003e\n\u003cli\u003eLOCALLY PROCESSED | Our rock and mineral samples are sourced from a variety of locations around the world and are processed in Victor, NY\u003c\/li\u003e\n\u003cli\u003eINDIVIDUALLY PACKAGED \u0026amp; LABELED | Each specimen sample is packaged in a transparent bag, and is labeled \u0026amp; barcoded for easy identification\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EISCO","offers":[{"title":"Default Title","offer_id":48204044337303,"sku":"B083T9DZ28","price":21.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/1032\/2327\/files\/41QN3LgmVBL.jpg?v=1788508345","url":"https:\/\/tinkervanta.com\/products\/eisco-raw-rhyolite-igneous-rock-specimen-approx-1-geologist-selected-hand-processed-great-for-science-classrooms","provider":"TinkerVanta","version":"1.0","type":"link"}