Rocks are cool.

I found this beautiful specimen of calcite at a rock shop in West Chester. Notice the rhombohedral formation on the top center. The orange color comes from limonite deposits. Apparently, loads of these crystals were uncovered in a quarry somewhere in York County, PA a few years back. This is one of my favorites!

http://www.mindat.org/min-859.html


Here is an arrangement of polished lepidolite, an amethyst geode fragment, and Mexican danburite covered with calcite druze.

http://www.mindat.org/show.php?id=2380.php?id=2380
http://www.mindat.org/min-198.html-198.html
http://www.mindat.org/show.php?id=1218

J