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 HelpSpecimens from Copperhead Claim, Saguache, Co.

14th Sep 2013 01:31 UTCJason Box

08081430016028927138552.jpg
I was going to post these photos on the locality page where they were found, but there are no mineral entries for that location. Copper Head Claim, Blake District (Mirage District; Cotton Creek District), Saguache Co., Colorado, USA Not to mention I am unsure of what exactly they are. I had assumed some sort of copper sulfate, with the second specimen showing a pyrite nodule.

08601560016028927135657.jpg

09203230016028927138506.jpg

14th Sep 2013 04:15 UTCBlain Bard

Without a hardness test or anything else itll be impossible to name a green copper mineral as there are many. What crystal system does it crystallize in?

14th Sep 2013 06:53 UTCRalph Parkes

Jason,

The green crust could be Malachite, while the brassy/metallic nodule could be Pyrite; however, the nodule may also be Chalcopyrite. The weathering of Chalcopyrite can form Malachite. Hope this helps.

Ralph


Would like to add that Chrysocolla and Turquoise are also possible, both have been reported from Saguache County (especially Turquoise). As Blain hinted on, trying to ID a crust is problematic at best.
 
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 19, 2024 07:26:19
Go to top of page