Lab 1 SES 123

Module 1 Worksheets 37 Name________________________________ Worksheet 1A. Summarize your observations about the variations in the physical property displayed by the minerals on Exercise 1A on the course website. Physical Property Box Describe how each of the minerals displayed on the website vary in the named physical property. Under hardness, for example, you might say “the light gray mineral is softer than a fingernail.” Mineral Names Hardness Observation___________________________________________ Observation___________________________________________ Observation___________________________________________ Minerals used as examples: calcite, talc, K-feldspar ______________ ______________ ______________ Streak Observation___________________________________________ Observation___________________________________________ Minerals used as examples: hematite, pyrite ______________ ______________ Luster and Transparency Observation___________________________________________ Observation___________________________________________ Observation___________________________________________ Minerals used as examples: muscovite-mica, pyrite, gypsum ______________ ______________ ______________ Color Observation___________________________________________ Observation___________________________________________ Observation___________________________________________ Observation___________________________________________ Minerals used as examples: different feldspars ______________ ______________ ______________ ______________ Cleavage Observation___________________________________________ Observation___________________________________________ Observation___________________________________________ Minerals used as examples: quartz, plagioclase feldspar, biotite ______________ ______________ ______________ Specific Gravity Observation___________________________________________ Observation___________________________________________ Minerals used as examples: galena, halite ______________ ______________ Magnetic Observation___________________________________________ Observation___________________________________________ Minerals used as examples: magnetite, mafic mineral ______________ ______________ This mineral was scratched by a penny its hardness is likely around 3. This is the softest easily scratched by fingernail. Survived penny and nail test and scratches glass likely has a hardness of 6 Greenish brown streak Produced reddish brown streak Translucent Metallic look Opaque similar to brick wall Can be many types of colors Grey Green n/a Calcite Talc K-feldspar Pyrite Hematite Muscovite-miac Pyrite Gypsum Quartz Galena Olivine n/a Quartz has no cleavage so it breaks irregular 2 planes of cleavage that intersect at 90 degrees The biotite has one plane which breaks off in single sheets. 46g very dense gravity= 7.67 27g less dense gravity= 2.25 This mineral is magnetic This mineral is not magnetic Quartz Plagioclase Feldspar Biotite Galena Halite Magnetite Mafic Mineral Jade Fischbeck

Module 1 Worksheets 38 Worksheet 1B. For each unknown mineral sample from Painted Canyon located on the course website (Exercise 1B), fill in its physical properties in the table below and identify each mineral. Some properties require a brief description while others require only a “yes” or “no” answer. Sample # Fundamental Properties Mineral Name 1 Color & luster ___________________________________________ Hardness ___________________________________________ Streak? ___________________________________________ Cleavage? ___________________________________________ Acid Reaction? ______ Magnetic? ______ Other Descriptions ________________________________________ ________________________________________________________ ________________________________________________________ 2 Color & luster ___________________________________________ Hardness ___________________________________________ Streak? ___________________________________________ Cleavage? ___________________________________________ Acid Reaction? ______ Magnetic? ______ Other Descriptions ________________________________________ ________________________________________________________ ________________________________________________________ 3 Color & luster ___________________________________________ Hardness ___________________________________________ Streak? ___________________________________________ Cleavage? ___________________________________________ Acid Reaction? ______ Magnetic? ______ Other Descriptions ________________________________________ ________________________________________________________ ________________________________________________________ 4 Color & luster ___________________________________________ Hardness ___________________________________________ Streak? ___________________________________________ Cleavage? ___________________________________________ Acid Reaction? ______ Magnetic? ______ Other Descriptions ________________________________________ ________________________________________________________ ________________________________________________________ This table is continued on the following page. Transparent and grey 3-5 Hardness White One Plane No No Text Brownish grey 6.5-7 Hardness White No No No Text Orange 6 Hardness White 2 Planes of clevage No Wavy lines Greyish white 6 Hardness White 2 planes of clevage No No Twinning striations Quartz Mica Potassium Feldspar Plagioclase Feldspar No