Before their destruction several years back the "Dallas North Central Caverns" had some pretty spectacular calcite formations. There are some "urban caving" sites in Fort Worth where I have observed soda straws growing where concrete structure butted up to other material (brickwork and iron pipe) in the same passageway. The formations there were pearl white to transparent and grew fast and long, up to 4 feet in length. Vandalism or pulse flooding took those out some time back, but last time I looked they seem to be growing back.
________________________________ From: Louise Power <power_lou...@hotmail.com> To: texas cavers <texascavers@texascavers.com> Sent: Tuesday, March 12, 2013 6:06 PM Subject: RE: [Texascavers] concrete stalactites When the Rice Grotto was exploring the "Caves of Houston," we found soda straws, draperies and a few other formations. Somewhere in the depths of my slide collections (you remember slides), I have pictures. When I finally retire, just like a lot of the other people I caved with I'm going to scan my slides (if they don't come up with something better by then). Louise
