MODIFIED and UPDATED!!!UPDATED - QUARTZ CLASSIFICATION****************************************************************************************60 Flashcard Sets (each set consists of 3 cards) = 180 cards in totalHighly detailed cards High Definition pictures and detailed analysis of each rock and mineral.Includes name, colour range, category, streak colour, lustre, level of transparency, Mohs hardness, interesting facts and uses and so much more.Includes all the common:MineralsSedimentary RocksIg