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Rutile from Brazil, but where?
  
  Index -> What is it? - Where is it from?
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Pete Richards
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PostPosted: Dec 07, 2018 11:22    Post subject: Rutile from Brazil, but where?  

Recently I bought the rutile specimen pictured below. It is 20 mm long, and somewhat abraded, either by stream action or by poor handling. The third photo shows a small additional crystal at the base of the main crystal; these two together have about the right angle to be a twin on {031}. The last photo shows that the color is brown rather than red.

The locality was given as Buritas, Minas Gerais. The only problem is that there is no Buritas listed in Minas Gerais on Mindat. There is a Buritis, but it is a meteorite locality and is located hundreds of miles north of the M.G. rutile localities.

I am hoping that someone with better knowledge of Brazilian rutile occurrences can identify the real locality for this specimen! Thanks for any suggestions.



IMG_4629.jpg
 Mineral: Rutile
 Locality:
Minas Gerais, Brazil
 Dimensions: 20mm long
 Description:
 Viewed:  1414 Time(s)

IMG_4629.jpg



IMG_4631.jpg
 Mineral: Rutile
 Locality:
Minas Gerais, Brazil
 Description:
 Viewed:  1415 Time(s)

IMG_4631.jpg



IMG_4637.jpg
 Mineral: Rutile
 Locality:
Minas Gerais, Brazil
 Description:
Twinning on {031}? such as is common at Diamantina
 Viewed:  1414 Time(s)

IMG_4637.jpg



IMG_4640.jpg
 Mineral: Rutile
 Locality:
Minas Gerais, Brazil
 Description:
Background darkened to show internal color of the rutile crystal.
 Viewed:  1416 Time(s)

IMG_4640.jpg



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Joseph DOliveira




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PostPosted: Dec 07, 2018 11:34    Post subject: Re: Rutile from Brazil, but where?  

Hi Pete, I found a couple listed on EBay that are similar to your example but the only locality given is a general Diamantina, Minas Gerais, Brazil.

Joe

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PostPosted: Dec 07, 2018 12:08    Post subject: Re: Rutile from Brazil, but where?  

Hi Pete,

For what it's worth, I have a rutile similar to yours in morphology, and the label states it is from Buritas, Diamantina, Minas Gerais, Brazil. I acquired it from Frank Melanson about 20 years ago. As you probably know Frank made many, many trips to Brazil in search of minerals, so I am inclined to trust the location. Can't explain the absence of Buritas on Mindat, but I suppose there are quite a few small localities that are not listed.

Michael



1087 Rutile.jpg
 Mineral: Rutile
 Description:
 Viewed:  1373 Time(s)

1087 Rutile.jpg


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PostPosted: Dec 07, 2018 13:02    Post subject: Re: Rutile from Brazil, but where?  

Interesting comment, Michael (and your photo is much better than mine!) My label does not include Diamantina, so your label would seem to tie the locality down much more closely.

I know Frank and Wendy quite well; I'll ask them about this locality.

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PostPosted: Dec 08, 2018 09:16    Post subject: Re: Rutile from Brazil, but where?  

Hi Pete:

I can add to the reliability of the designation "near Diamantina" with a rutile that I have (see photo). Mine did not come from the Melanson's directly but I am sure that it was acquired in Brazil by Frank.



Rutile - Brazil SC-310 23-8-2.JPG
 Description:
 Viewed:  1230 Time(s)

Rutile - Brazil SC-310 23-8-2.JPG



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PostPosted: Jan 02, 2019 14:57    Post subject: Re: Rutile from Brazil, but where?  

I received a note from Wendy Melanson today about this mystery locality. The short of it is that the Melansons don't know where Buritas is either! Wendy sort of remembered Buritis but that is not near Diamantina at all. They may well have been told Buritas or Buritis by the person they got the specimens from, but there does not appear to be a known locality for rutile with a name like that near Diamantina.

So it appears that the best designation is the more general "near Diamantina, Minas Gerais".

This search appears to have arrived at a dead end.

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PostPosted: Jan 05, 2019 16:34    Post subject: Re: Rutile from Brazil, but where?  

Mystery solved:

The correct locality for these rutile specimens is “Buriti,” which is a rural place within the municipality of Diamantina. Buriti looks uninhabited and is situated approximately 20 air miles WNW from the city center of Diamantina in Minas Gerais, Brazil (see attached Google Earth Pro map).

Buriti is at the southern end of the Corrego Buriti, a lengthy stream that flows into the Rio Pardo Grande. Buriti is also two miles NE of the popular tourist site of Cachoeira Telesforo, a scenic waterfall and remote recreation area along the Pardo Grande River.

It is useful to know that the Portuguese word “buriti” (plural “buritis”) refers to the moriche palm tree and its fruit, which grow abundantly along the many rivers and streams in Brazil. Almost as abundant as these palm trees in Brazil are places with the name Buriti or Buritis, which can lead to much confusion.

As far as I can tell, a few rutile specimens from this remote locality hit the mineral market around 1999-2000. They had labels that consistently pluralized the name (Buritis) or misspelled it (Buritas), such as shown in the photo below. There are probably many other rutile specimens from this locality just labeled Diamantina.


Peter Farquhar
Fairfax, Virginia
USA



BuritiBrazil.jpg
 Description:
Map showing Buriti near Diamantina
 Viewed:  845 Time(s)

BuritiBrazil.jpg



RutileBuriti(PF-1737).jpg
 Mineral: Rutile
 Locality:
Buriti, Cachoeira do Telésforo, Conselheiro Mata District, Diamantina, Jequitinhonha, Minas Gerais, Brazil
 Dimensions: 3.4 x 1.3 x 1.2 cm
 Description:
Acquired in April 2000 (PF-1737).
 Viewed:  840 Time(s)

RutileBuriti(PF-1737).jpg


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PostPosted: Jan 05, 2019 16:57    Post subject: Re: Rutile from Brazil, but where?  

Thanks for that information, Peter. Your explanation makes far more sense than anything else I've seen!
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