Datebook For Sept. 23-24 - ContraCostaTimes.com Open to all with interests in rock hounding, geology and the lapidary arts. Centre Concord, 5298 Clayton Road. 925674-7055, www.ccmgs.org. Creekside Artists Guild 7-830 p.m http://www.contracostatimes.com/ci_16144411
Mining - IA The website for the Appanoose County Historical Coal Mining Museum in rockhounding Geology - Meteorites http://www.hotfrog.com/Products/Mining/IA
