Rocks & Minerals of California

Dan R. Lynch has a degree in graphic design with emphasis on photography from the University of Minnesota Duluth. But before his love of art and writing came a passion for rocks and minerals, developed during his lifetime growing up in his parents’ rock shop in Two Harbors, Minnesota. Combining the two aspects of his life seemed a natural choice, and he enjoys researching, writing about, and taking photographs of rocks and minerals. Working with his father, Bob Lynch, a respected veteran of Lake Superior’s agate-collecting community, Dan spearheads their series of rock and mineral field guides—definitive guidebooks that help amateurs “decode” the complexities of geology and mineralogy. He also takes special care to ensure that his photographs complement the text and always represent each rock or mineral exactly as it appears in person. He currently lives in Madison, WI, with his wife, Julie, where he works as a writer and photographer.

• RocksGraniteDioriteDiabaseGabbroPorphyryConglomerate and BrecciaSandstoneTuffShaleMudstoneLimestoneTravertineRhyoliteBasaltChertObsidianSchistGneissQuartziteMarbleMinerals & MoreQuartzCalciteDolomiteGypsumBaryte (Barite)FluoriteOlivineSulfurFeldspar groupPyroxene groupAmphibole groupZeolite groupTurquoiseChrysocollaMalachiteEpidoteJadeSerpentine groupTalcChlorite groupOpalJasperChalcedonyAgatesBerylCorundumTourmaline groupGarnet groupHowliteHaliteHanksiteUlexiteHematiteGoethiteMagnetiteGalenaSphaleritePyriteChalcopyriteMica groupAnimal fossilsDendritesPlant fossils/Petrified WoodTufaGoldMercuryMeteoriteSlagBenitoiteNeptuniteRealgarCinnabar