Quartz var. amethyst

Amethyst which is a variety of quartz that is purple.  Found at Serra do Mar. Rio Grande do Sul, Brazil.
Displayed at Smithsonian Museum of Natural History.  This specimen was once part of 32000 kg geode!

Quartz Crystals

Here is some quartz crystals from a geode that was broken open.

Another Geode Fragment

Here is another piece of geode with quartz and reddish material (maybe iron) found near Lake Cumberland, Kentucky.

Red Quartz Geode

Here is the inside of geode found near Lake Cumberland, Kentucky. I think the red is some sort of iron and quartz crystals. Maybe some dolomite and gypsum as well surround by chalcedony.

Quartz Brachiopods and a Gastropod

Here are some more pictures of fossils from Mt. Washington, Kentucky. All specimens are under 4 cm in size.