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7329
MineralsTantalum
22nd Jun 2011 01:18 UTCAnonymous User
"The most notable deposit of this
kind is Wodgina–Cassiterite Mountain. According
to the statistics on the USGS website, the mine has
produced up to 25% of the world’s primary tantalum
over the last five years."
quote from - Evolution of metallogeny of granitic pegmatites associated with orogens throughout geological time
A. V. Tkachev
- http://sp.lyellcollection.org/content/350/1/7.abstract
also -
http://www.australianminesatlas.gov.au/aimr/commodity/tantalum_10.jsp
22nd Jun 2011 01:50 UTCRob Woodside 🌟 Manager
Several kind Australians offered me lots of "Tin" when I was collecting native elements. Again Native Tin is extremely rare but there is one Australian occurrence. Sadly they were offering me cassiterite, a major ore of Tin.
Recently there's been discussion here of the lack of use of "native" when talking of minerals. The insistence on Native Gold. Native Silver, etc. seemed to me a bit obsessive, but apparently not!!!
22nd Jun 2011 02:26 UTCAnonymous User
We have a lot of granite around here and I'm starting to pay some attention to it's potential.
22nd Jun 2011 07:36 UTCNoah Horwitz
7th Apr 2012 01:08 UTCPeter Seroka
does anyone know the actual status of Tantalum (Ta) (native element).?
Mindat says: Valid since .... (this - for me - implies, that the IMA approved tantalum as a mineral).
Rob (above) speaks of " native tantalum is incredibly rare" ... and "microscopic grains" - however :
Webmineral says: Not IMA approved and other common references don' t know elemental tantalum as having been approved by IMA.
What's the status ?
7th Apr 2012 02:42 UTCRob Woodside 🌟 Manager
7th Apr 2012 19:41 UTCRob Woodside 🌟 Manager
There is also an old 19th century report of native iodine from an Italian volcano, it should be grandfathered as well. Yes!!! It's on the list as "questionable" with its 1897 reference!!! So the silence on Ta is odd.
7th Apr 2012 21:00 UTCAlfredo Petrov Manager
7th Apr 2012 21:09 UTCRob Woodside 🌟 Manager
7th Apr 2012 21:25 UTCAlfredo Petrov Manager
8th Apr 2012 03:12 UTCRob Woodside 🌟 Manager
The Russian publication of the discovery on the Moon seems the reason for a valid status and Published without approval. Perhaps others could comment.
8th Apr 2012 15:29 UTCjacques jedwab
Later named "niobocarbide" by Novgorodova et al.
8th Apr 2012 19:13 UTCRob Woodside 🌟 Manager
8th Apr 2012 20:31 UTCUwe Kolitsch Manager
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Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: March 29, 2024 05:40:41