[X] My Assistant

[CosmicRocker]

I was reading some papers at the GSA site recently and came across one describing giant gypsum crystals that were discovered in a Mexican cavern that was penetrated by mining operations near Naica, Mexico several years ago. The crystals were formed in an interesting environment. Being a confessed troglodyte, the paper immediately caught my attention. It is is worth a read if you have access. Here is a link to the abstract.

I thought some people here would enjoy seeing more pictures, since most everyone I directed to the pictures was duly impressed. You can Google for additional pictures and other information, but the cave was recently explored by the Italian La Venta explorers, and they have posted some of the best photographs. You can also read their expedition log and find a few more pictures here. The environment is at about 60 degrees C, with 100% humidity, so you can imagine that exploring here and doing science is on the extreme edge.

If it was not for the fact that the mining operation is pumping out groundwater at something like 1000 liters/minute, this cavern would be submerged in hot water, and the crystals would still be growing. When the mining operation stops, so will pumping, and these natural wonders will again become inaccessible. I hope some museums are bidding for a few specimens to place in specially climate-controlled exhibits. Any contributions to the clink jar will be donated to a favorite geological charity.

[CosmicRocker]

This is just a reminder for those of you who wanted to see more from this hole in the earth. The National Geographic program is scheduled to appear tomorrow, on October 12th. Additional information is available on that page...

Oh yes, thanks jasedm and EGD for reviving this thread.