World's premier location for large, multiple twinned rutile crystals; rutile, lazulite, pyrophyllite, kyanite, hematite, pyrite, ilmenite, muscovite, fuchsite, barite, sulfur, blue quartz, quartz crystals, and microcrystals such as woodhouseite, variscite, strengite, phosphosiderite, cacoxenite, crandallite.