How Precious Opal Forms; Slovakia's Opal Mines скачать в хорошем качестве

How Precious Opal Forms; Slovakia's Opal Mines

Within Slovakia are the largest source of precious opals on the continent. These opals originated approximately 10 million years ago on the southern flank of a dying volcano. This video will discuss how these opals formed, the difference between common and precious opal, and what colors the modern opals occur in. Disclaimer: I am being paid to make this video by the European Union and NS Kožare as part of a series meant to share several wonderful geologic features within the nation of Slovakia. Website for the Slovakia Opal Mines: https://www.slovenskeopalovebane.sk/ Address: Floriánova 3201/12, 080 01 Prešov, Slovakia Thumbnail Photo Credit: This work "SlovakiaPreciousOpal2", is a derivative of a photo (resized, cropped, text overlay, image rotated 90 degrees clockwise, overlaid with a second photo from a different source, then blurred at the boundary between the two photos, then overlaid with GeologyHub made graphics (the image border and the GeologyHub logo)) from "Slovenský opál", by: Slovakiaopal, 2015, Posted on Wikimedia Commons, Photo link: https://commons.wikimedia.org/wiki/Fi..., CC BY 4.0. "SlovakiaPreciousOpal2" is used & licensed under CC BY 4.0 by    / geologyhub   If you would like to support this channel, consider using one of the following links: (Patreon:   / geologyhub  ) (YouTube membership:    / @geologyhub  ) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at geologyhubyt@gmail.com and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image: Public Domain: https://creativecommons.org/publicdom... CC BY 2.0: https://creativecommons.org/licenses/... CC BY 4.0: https://creativecommons.org/licenses/... 0:00 Sponsored Message 0:13 Opals in Slovakia 2:11 Opal Formation 3:22 Precious & Common Opal 4:07 Conclusion