Thread: grounwater crossword puzzle help

Hey guys i need help with a couple of these crossword questions. Thanks

1. A type of well that produces water under its own pressure (2 words). 12 letter word, 3rd letter is "e"

2. Dense evaporite mineral, used as an additive to drilling muds for drilling water wells. 6 letter word, 1st letter is "b"

3. A structure in which water is forced upward by steam pressure. 6 letter word, 2nd letter is "e"

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I found number 1&3. 1 is Cartesian well and 3 is geyser. I need help with number 2 please thanks

http://en.wikipedia.org/wiki/Drillin...f_drilling_mud