Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography
╳Discussions
💬 Home🔎 Search📅 LatestGroups
EducationOpen discussion area.Fakes & FraudsOpen discussion area.Field CollectingOpen discussion area.FossilsOpen discussion area.Gems and GemologyOpen discussion area.GeneralOpen discussion area.How to ContributeOpen discussion area.Identity HelpOpen discussion area.Improving Mindat.orgOpen discussion area.LocalitiesOpen discussion area.Lost and Stolen SpecimensOpen discussion area.MarketplaceOpen discussion area.MeteoritesOpen discussion area.Mindat ProductsOpen discussion area.Mineral ExchangesOpen discussion area.Mineral PhotographyOpen discussion area.Mineral ShowsOpen discussion area.Mineralogical ClassificationOpen discussion area.Mineralogy CourseOpen discussion area.MineralsOpen discussion area.Minerals and MuseumsOpen discussion area.PhotosOpen discussion area.Techniques for CollectorsOpen discussion area.The Rock H. Currier Digital LibraryOpen discussion area.UV MineralsOpen discussion area.Recent Images in Discussions
GeneralSweet Home, Linn Co., Oregon USA, Holley Blue Agate
12th Jan 2022 02:12 UTCSteve Ewens
Chalcedony, occurring also as Agate at this location often was an intense blue. I do not know the agent responsible for the color.
To the best of my knowledge, the occurrence is closed to collecting.
The recent trips to the area jogged my memory and I found about 400 grams that I had squirreled away.
Steve
12th Jan 2022 02:25 UTCSteve Ewens
Steve
12th Jan 2022 04:46 UTCKeith Compton 🌟 Manager
12th Jan 2022 20:13 UTCIan Nicastro
Steve that's some intense color in your polished piece! I've found that among American agates, Holly Blue seems to command the most interest and highest prices because their vibrant color even appeals to folks who don't normally collect lapidary pieces. I have some friends in Oregon and they said that the land that this deposit is on was bought by a timber company, and the company absolutely forbids collecting or trespassing these days. I was told the reason why the company cracked down was because a trespasser got accidentally killed by a cable wire while riding an ATV through one of the logging areas and the company doesn't want to be found liable for any injuries or deaths.
13th Jan 2022 14:01 UTCAaron pat young
Chalcedony is the family of quartz baring minerals agate,jasper,chert and more are all chalcedony common nickname being flint it is your most common mineral but not the biggest family that being your Hornblende family
13th Jan 2022 16:50 UTCSteve Ewens
Yes, I am aware that agate is chalcedony.
The distinction was made for the purists that insist chalcedony be banded in order to be termed agate.
Some chalcedony from the Holley Oregon site contains banding and some does not. Hence, the reason for the distinction.
And, I believe, quartz is the family with chalcedony, agate and jasper being the varietals.
Not the other way around.
Steve
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 9, 2024 19:48:48
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 9, 2024 19:48:48