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LocalitiesSão Gabriel, Rio Grande do Sul, Brazil

29th Jun 2016 18:18 UTCWilliam W. Besse Expert

I believe the photographs and information here is misplaced. The only São Gabriel in Rio Grande do Sul is in the south central part of the state and outside the area of basalt flows where these minerals formed. There was another São Gabriel but it was renamed Ametista do Sul in the 1980s (approximately). I would suggest the photos be moved to Ametista do Sul.

Bill

29th Jun 2016 19:23 UTCRob Woodside 🌟 Manager

Thanks Bill. I envisioned amethyst photos to be moved, but when I got there, there were beige quartz pseudos after anhydrite. These should be moved? They are ex Cilen and ex Frasier which are usually correct. Also there's a mine ref. on one of them. Should that locality be added and the pseudos put there?

16th Jul 2016 00:57 UTCDon Windeler

I listed one of the quartz ps anhydrites referenced above, this specimen. I don't have any info or reason to contradict Bill, so will change my records accordingly.

As I poked around a bit, though, I am wondering about the specific location. My specimen was labeled "Daniello Mine."

On John Betts' archive, he has two similar quartz ps. anhydrites, one with an old Alfred Stevenson label for "Danialo Mine" and another tagged "Mina Danielo". It seems like this mine has been used in multiple places but isn't in MinDat -- anyone have more info that would confirm its existence?

Cheers,

D.

16th Jul 2016 04:04 UTCWilliam W. Besse Expert

Most likely the name of the person the pieces were bought from. Could be his mine, but it is common for people to say everything is from their mine.

These casts occur over an area that includes Frederico Westphalen, Irai, and Planalto, as well as Ametista do Sul. This is an area of flood basalt. The area you had it in was well outside of the basalt area.

Bill