Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery
Robert Simonoff January 01, 2012 09:00PM
My question is about the picture below. It is my understand that these are really calcite after glauberite and that the glauberite has not survived. Is my understanding incorrect?


Hershel Friedman January 02, 2012 01:54AM
My understanding is that all these Camp Verde Glauberites are Calcite pseudomorphs. To be certain though, run an acid test to see if they effervesce (i.e bubble up) when the acid is placed on them. If it effervesces, then it is definitely a calcite pseudomorph.
Dana Slaughter January 02, 2012 02:05AM

There are actually three types of pseudos from the Camp Verde area. The most common (and those most prevalent at the former mine site) are the white gypsum pseudos after glauberite. Just to the west of this in Copper Canyon can be found abundant sharp cream-colored calcite pseudos after glauberite and somewhat more rough tannish aragonite pseudos after glauberite. The aragonite ones are very distinctive and often show sharply terminated crystals as part of the pseudo---these also fluoresce a cream color.

I've collected here (along with no doubt thousands of others) and there is no shortage of specimens. I really love the very sharp calcite pseudos and the best of the aragonite pseudos are actually quite sharp and complete. Some of the white gypsum pseudos get quite large but I haven't come across the huge clusters of relatively sharp crystals that I sometimes see on the market. We walk upstream in a wash near the mine and have located the precise spot where these (the aragonite ones) weather from the sides of the wash---they are extremely sharp at this point. It is a fun place to collect--most people just hit the former mine site (easily visible due to the extreme whiteness of the surrounding area) and probably don't know about the wash (Copper Canyon) locality. I feel that they are extremely underappreciated given the sharpness and condition of specimens that can be collected. I usually offer them at shows in a set of three individuals with one aragonite, one calcite and one gypsum pseudo rounding out the collection.

Edited 2 time(s). Last edit at 01/02/2012 02:07AM by Dana Slaughter.
Robert Simonoff January 02, 2012 02:16AM
Sounds like we agree that the pictured specimen is not, however glauberie, but isinstead in the shape of glauberite smiling smiley

Dana Slaughter January 02, 2012 03:52AM
Hi Bob,

Sorry about that! I went on and on about the locality but didn't address your question. Yes, you
have a calcite pseudomorph after glauberite. I haven't found any unaltered glauberite crystals in the
area yet though I suppose that they could be found in the talus at the mine site.
luigi chiappino January 02, 2012 01:02PM
Thank for your signalling

Robert Simonoff January 02, 2012 03:05PM
Thanks Dana, always great to learn, that is why I am here! Please, no need to ever apologize for teaching me something!

And Thanks Luigi, I don't know if anyone has said it is NOT glauberite as of yet. Dana seems to have indicated it could be multiple things: calcite, aragonite or gypsum.

Dana Slaughter January 02, 2012 04:11PM
I mentioned in my last post that it is definitely a calcite pseudomorph after glauberite. The three types of pseudos are very distinctive and can't be mistaken for each other by anyone that has collected at the mine site and the adjacent wash/canyon. The "hard" cream/yellowish ones are calcite and the spiky tannish ones are aragonite---the most common ones are those where gypsum replaces the glauberite and these are generally more rough in appearance and oftentimes snow white. I'll have to see if I have a set remaining and post a good photo showing all three pseudo types. I'll post some locality photos today as well.
Robert Simonoff January 02, 2012 04:29PM
Thanks Dana, that would be helpful. I wonder if we could get this information added to the notes about the locality
Dana Slaughter January 02, 2012 05:47PM
Hi Bob,

I have none of the sets remaining and may have to make a quick trip up to collect only the sharpest examples possible. I added a locality photo for Copper Canyon, Yavapai County but it may take a bit to show up when the page is viewed. To my knowledge, most of the calcite and aragonite pseudomorphs are found in Copper Canyon and not at the Camp Verde salt mine site proper. Your specimen is almost certainly from Copper Canyon---this is adjacent to the former mine site. I added a brief description to the Copper Canyon page and will add some geological information to the Camp Verde salt mine page soon. This is a fun place to collect as crystals are so numerous. They are held in relatively low regard with most AZ collectors as they are so common but I feel that the pseudomorphs are wonderful due to their sharpness and feel that the general disregard for these specimens by local collectors is misguided.
Robert Simonoff January 02, 2012 05:51PM
I would personally LOVE to have one of each type. Being common (or even ugly) is no reason to exclude in my opinion, some ugly things are still very worth study. I really like psuedomorphs. But it may be quite some before I get to collecting out there. You have wonderful collecting in AZ, I wish ours was even 1/100000th as good.

Thanks again
Dana Slaughter January 02, 2012 06:17PM
Hi Bob,

I just added some info to the Camp Verde salt mine page and sent you a PM. Take care!
Passarino Giuseppe February 21, 2012 11:54AM
Interesting and detailled information.
We can label correctly "glaugerite - Camp Verde"
Patrick Bell August 01, 2015 07:30PM
"Calcite after Glauberite" or Calcite pseudomorph after Glauberite, either is correct. Camp Verde, Yavapai County, AZ.
Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.
Your message:
  • Valid attachments: jpg, gif, png, pdf
  • No file can be larger than 1000 KB
  • 3 more file(s) can be attached to this message

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2016, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: December 10, 2016 20:31:27
Go to top of page