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Improving Mindat.org"Rutile" from Tushar Mt., Marysvale, Utah

16th Aug 2009 17:31 UTCUwe Kolitsch Manager

http://www.mindat.org/loc-8857.html


At least some of the rutile from the rhyolite locality

http://www.mindat.org/gallery.php?loc=8857

seem to be pseudobrookite.

16th Aug 2009 18:52 UTCDon Saathoff Expert

Identical form to the pseudobrookite found in the cavities in the rhyolite at Paramount Canyon, Sierra Co., NM with bixbyite, hematite, etc.

17th Aug 2009 10:44 UTCEtienne Medard Expert

How come we missed that before? They all look typical pseudobrookite, and the paragenesis is perfectly OK.


compare to that locality, too: http://www.mindat.org/loc-180783.html


Etienne

17th Aug 2009 19:29 UTCUwe Kolitsch Manager

Message sent.

Pseudobrookite added to mineral list.

17th Aug 2009 20:39 UTCSteve Rust Manager

You are probably correct and it is pseudobrookite, I will change the photo's.


Steve Rust

17th Aug 2009 21:21 UTCJoe Marty Expert

Several years ago I read a report of rutile in a rhyolite flow by the road north off Marysville. I visited a rhyolite flow in this area and it appeared similar to the Thomas Range rhyolite but with much smaller cavities and crystals. I did not find anything resembling rutile but did find pseudobrookite. The Tushar mountains are on the west side of this location. I wrote the researcher in Cedar City but never heard anything back.


Joe

17th Aug 2009 22:13 UTCSteve Rust Manager

I was told when I visited this site in 2002 that it was rutile , but I must say it dose look more like pseudobrookite.


Steve Rust
 
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