Name Also Known As Variations Distribution Complete Description  Complete Pictures Added Jack Creek Quartzite Arizona         Jackfork Quartzite           Jackknife Creek Wood           Jacks Creek Quartzite           Jacksfork Quartzite           Jackson Purchase Gravel Chert           Jackson Stage Chert           Jacobsville Sandstone           Jade / Nephrite           Jade Fields Jasper           Jalama Beach Chert           James River Silicified Wood           Jankins Soapstone           Jarbridge Rhyolite           Jasper Taconite           Jaspilite           Jefferson City Chert Bell City Chert         Jefferson City Quartzite           Jefferson County Fort Payne Chert           Jefferson Rhyolite           Jeffersonville Chert           Jelly Roll Chert Crab Orchard Chert         Jemez Jasper           Jemez Obsidian           Jemison Chert Talladega Chert         Jerome Golf Course Pillow Basalt           Jet           Joes Creek Gravel           Johnny Bull Turquoise           Johns Valley Shale           Joliet Chert           Jones Falls Gneiss           Jordan Sandstone           Jornada Opalized Wood           Josephinite           Jump Creek Rhyolite           Juneau Wood           Jungle Creek Chert           Jureano Wood