In article ,
Peter Wilson wrote:
When I place laterite in plain tap water (alkaline) it's produces very tiny
bubbles and fizzes for a few moments and keeps releasing tiny bubbles for at
least a minute.

Does anyone know what this gas is?

Air.

What is your laterites pH?

Should be neutral.

What does laterite feel like when you put it on your tounge? My tounge
sticks to it with a vengence!!

Chalk. The stuff is utterly void of water, it's just taking water on
and tiny air bubbles inside are escaping. No worries.

--
Need Mercedes parts ? - http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
1970 280SE, 72 280SE | Home page: http://rs79.vrx.net
633CSi 250SE/C 300SD | http://aquaria.net http://killi.net