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GeneralBentonite
3rd Jul 2012 19:28 UTCECBEC
4th Jul 2012 12:29 UTCRock Currier Expert
4th Jul 2012 13:40 UTCErik Vercammen Expert
4th Jul 2012 14:55 UTCBart Cannon
It usually develops from the weathering of deposits of basalt rich volcanics. Wyoming is the most common source. Here in Washington State we have plenty of it which could be collected but with great effort and legal problems from roadcuts in the Columbia River basalt.
As well as a pond liner underlayment, it is the most commonly used drilling mud.
You can buy 100 pounds of the best stuff for about $20. I think.
Don't bother trying to collect it
Find the website for World Wide Drilling Resources, and start e-mailing or phone calling. Or make a phone call to a mining company doing heap leaching. We still have a few mining companies left in the U.S.
Bart
4th Jul 2012 21:40 UTCRock Currier Expert
4th Jul 2012 21:46 UTCRock Currier Expert
6th Jul 2012 04:05 UTCJim Bean 🌟
6th Jul 2012 04:08 UTCAlfredo Petrov Manager
7th Jul 2012 01:42 UTCReiner Mielke Expert
7th Jul 2012 01:59 UTCBart Cannon
I would be interested in hearing about the alternatives.
I made a comment about drilling muds. Baryte / barite is also used as drilling mud since it sinks instead floats down the drill hole, but it doesn't seal the hole against grounwater in and groundwater out..
Bart
7th Jul 2012 14:55 UTCReiner Mielke Expert
7th Jul 2012 23:33 UTCVolkmar Stingl
-------------------------------------------------------
> Bentonite is a very plastic clay mineral in the
> montmorillonite / smectite group.
As far as I know is bentonite not a clay mineral, it is a kind of rock originating from altered volcanic ash layers! Bentonite consists of a mixture of mainly clay minerals of the smectite group (mainly montmorillonite) and smaller amounts of other phases, like quartz, pyrite, some carbonates, opal CT etc. The high expansion potential is related to the high content of montmorillonite.
I am not sure if it is necessary to use expandable clays for sealing a pond. In my opinion, normal lakebed clays (like Jim mentions) fulfill the same function and are much cheaper. It's a question of grain size and compaction, not of expandability.
Volkmar
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 19, 2024 04:46:17