GEOL 1301 Lab 2: minerals

GEOL 1301 Lab 02 Minerals In this lab, you are learning to identify a set of common minerals and to sort minerals into their correct groups. Your lab instructor will review some of the common minerals and the techniques used to identify them, based on physical properties. Please complete the two worksheets (“Examining and Classifying Minerals” and “Mineral Groups”), then upload your completed lab on Canvas. Mohs’ Hardness Scale: Hardness of some common objects: • Fingernail 2-2.5 • Copper penny 3-3.5 • Steel nail 4.5 • Glass plate 5.5 • Porcelain plate 6.5 Crystal Habit and Form: See https://geology.com/minerals/crystal-habit/ Mineral Names and Properties: See http://geology.com/minerals/ Examining and Classifying Minerals Use the following link to identify the mineral samples listed in the table: http://profharwood.x10host.com/GEOL101/Labs/Minerals/index.htm Sample Number 1 3 4 6 9 10 11 13 17 19 Luster Hardness Cleavage/ Fracture Streak Other Properties (e.g. Color, Crystal Form, Reaction to Acid) Mineral Name Mineral Groups Silicates: Carbonates: Sulfates: Sulfides: Oxides: Hydroxides: Phosphates: Halides: Native Elements: contain silicon (Si) and oxygen (O) metals plus CO3 metals plus SO4 metals plus S metals plus O metals plus OH metals plus PO4 metals plus F, Cl, Br, or I one element only List the group of the following minerals: Mineral Name Formula Anhydrite CaSO4 Apatite Ca5F(PO4)3 Barite BaSO4 Beryl Be3Al2Si6O18 Chalcopyrite CuFeS2 Chromite FeCr2O4 Copper Cu Corundum Al2O3 Fluorite CaF2 Galena PbS Goethite FeO(OH) Halite NaCl Magnetite Fe3O4 Olivine (Fe,Mg)2SiO4 Plagioclase NaAlSi3O8 to CaAlSi2O8 Pyrrhotite FeS Rutile TiO2 Sphalerite ZnS Sulfur S Sylvite KCl Group