Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
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

Identity HelpIt was gifted to me but I'm not sure what it is

18th Aug 2019 23:16 UTCSeptember Brown

07511080016030446345325.jpg
I was given a box of rocks, most I could identify...but there are a few like this one that have me stumped!

20th Aug 2019 01:42 UTCMatthew Droppleman

Possibly water worn Japsper?

20th Aug 2019 01:52 UTCPaul Brandes 🌟 Manager

Any idea what the hardness is?

20th Aug 2019 01:53 UTCRoger Ericksen 🌟

I agree with Matthew, looks like jasper, a variety of microcrystalline Quartz. It may have been cut to that shape and polished. Checking the hardness is a good idea. See if it can scratch glass.

20th Aug 2019 16:48 UTCEd Clopton 🌟 Expert

There also are volcanic rocks--rhyolite, etc.--that can look like this and get called "jasper" (e.g., chicken track jasper from Oregon) for lapidary purposes.
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
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: April 25, 2024 02:29:42
Go to top of page