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 HelpSparkly light orange mineral on black morion quartz from Shandong China

18th Feb 2019 23:44 UTCChristina Dimos

00460590017055977403669.jpg
Hi all,


I recently bought this black quartz point from Shandong, and on one side it has this sprinkling of pale orange little crystals. I've been reading that this is believed to be some sort of zeolite, but wanted to check here. Not sure of the hardness or streak, since the crystals are so small/fine and I don't want to damage the specimen.


Additionally, is it pretty much accepted that this type of quartz from China is naturally this dark and opaque, rather than artificially irradiated?


Thank you!




04388570017055977459517.jpg

03281950017055977498149.jpg

19th Feb 2019 00:11 UTCWayne Corwin

Looks like a secondary growth of quartz, but poorly formed.

19th Feb 2019 00:11 UTCNicholas J. Rose

It would appear that the light brown crystals in the photo (that you said are light orange) are stilbite that grew as a late stage "snow on the roof" mineral on the upper surface of the smoky quartz crystal that was either detached from it's original position in a pocket, and lay along the floor of the pocket or projected sub- horizontally from a pocket wall such that only the upper surface was covered with stilbite.

The other side of the specimen appears to have a little patch of feldspar (probably albite) and maybe a dash of epidote.
 
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 27, 2024 02:04:04
Go to top of page