Donate now to keep alive!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 Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch 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 MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Lavra Jabuti Wodginite 2 Different Paragenesis?

Posted by Rudy Bolona  
Rudy Bolona February 23, 2012 01:03AM
I recently obtained this specimen of wodginite from the Jabuti Mine, Baixio, Minas Gerais, Brazil. It was described as epitaxial after cassiterite. Upon examination it is obviously primary wodginite with no cassiterite. The famous epitaxial find of the 1970's came from a clay filled pocket and all the crystals were without matrix and of course associated with the cassiterite. This specimen has a bit of clean white albite attached. My question is are there two different wodginites from this mine?

open | download - IMG_8482.JPG (123.3 KB)
open | download - IMG_8483.JPG (116.6 KB)
open | download - IMG_8479.JPG (118.2 KB)
Chris Stefano February 23, 2012 01:56AM

It was my understanding that all the Wodginites from this occurrence are epitaxys. However, I just looked back over Minrec vol. 9 no. 1 p.14-18, and now I'm not so sure with your specimen, or with my specimen, both of which came from the same lot. Perhaps they are primary crystals. I'll be curious as to other's thoughts.

Chris Stefano February 23, 2012 02:01AM

Just thought of something else- both of these specimens came from Schlichter. Check your data card, but I'm pretty sure he noted that he got these labeled with a different locality and changed the label to Jabuti based on the Minrec article. I wonder if he wasn't mistaken
Rudy Bolona February 23, 2012 03:07AM
Hi Chris,

The Schlicter card says Corrego do Urucum, but says to look at the back which notes Mineralogical record and Smithsonian. He obtained the specimen from Carlos Barbosa with only a thumbnail label saying Galileia. Wodginite is not listed at the Corrego do Urucum, maybe it's from Linopolis. Unfortunately, both of these great collectors are in that great pegmatite in the sky. Anyhow the specimen is awesome and I love it!

Johan Kjellman February 23, 2012 10:07AM
I don't know if this helps but anyway from Min.Rec vol 21 p.488:
"Lastly, Carlos Barbosa has obtained more interesting specimens from Linopolis, in Minas Gerais. Among these are wodginite in lustrous black crystals up to 1 cm"

Ercit et al in Can Min. 1992, p. 614 lists, apart from Lavra Jabuti, also Alto do Giz and Seridozinho, Parabaiba as Brazilian wodginite localities.

Van King might be of further help, and for sure Luiz Menezes

Luiz Alberto Dias Menezes, Fo. February 25, 2012 03:03AM
I don't think any of your specimens came from Jaboti mine; Carlos Barbosa had on his old inventory, that I acquired from his widow Lourdes in 2005, a very similar specimen labelled as from Linópolis. I have not heard about wodginites from Urucum mine (I prefer this name rather than "Córrego do Urucum").
Sorry, only registered users may post in this forum.

Click here to login

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 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 20, 2018 13:21:54
Go to top of page