The Study of Minerals   *Use upload for pictures   1. Name th

The Study of Minerals   *Use upload for pictures   1. Name the physical property (hardness, color, streak, etc.) described by each of the following statements. DESCRIPTION:                                             PHYSICAL PROPERTY: Breaks along smooth planes: ___________________________________ Scratches glass: _______________________________________ Shines like metal: __________________________________ Scratching produces a red powder: _____________________________ Looks like broken glass: ______________________________   2. What term is used to describe the shape of a mineral that has three directions of cleavage that intersect at 90-degree angels?   _______________________________   3. Describe the cleavage fo the minerals listed below. include the number of directions and degrees of cleavage angles (if appropriate). MINERAL:                   CLEAVAGE: Muscovite:   _____________________ Calcite: _______________________ Halite:  ______________________ Feldspar: _____________________   4. What physical feature most distinguishes biotite mica from muscovite mica? __________________________   5. Name a mineral that exhibits the physical properties listed below. (use the Photos in the upload, if needed) PROPERTY:                           MINERAL: One direction of cleavage: ________________________ Striations:    ________________________ Multiple Colors: __________________ Cubic cleavage: ______________________ Nonmetallic, vitreous luster: ______________________ Fracture: _____________________ Metallic luster: _____________________   6. Figure 1.32 illustrates the common crystal form of the mineral fluorite and the characteristic shape of a cleaved sample of fluorite. Identify each specimen (A or B) next to its appropriate description below.  Cystal form of fluorite: ____________ Cleavage specimen of fluorite: ___________   7. Refer to the photo in Figure 1.33 to complete the following.        a. Describe the crystal form (habit) of this specimen.            ______________________________________________________________________________        b. What term is applied to the lines on this sample?            ______________________________________________________________________________        c. Based on what you can determine from this photo, use the mineral identification key (see figure 1.24) to              identify this mineral.             ______________________________________________________________________________   8. A photo of agate, a variety of quartz composed of microscopically small crystals, is provided in Figure 1.34. Based on this image, describe the habit of this sample.          _______________________________________________________________________________          _______________________________________________________________________________   9. If a mineral can be scratched by a penny but not by a fuman fingernail, what is its hardness on the Mohs scale?          ____________________________   10. What term is used to describe the tenacity of muscovite?          _________________________________________   11. Use the mineral identification key (see Figure 1.24) to identify a mineral that is nonmetallic, dark colored, harder than glass, lacks cleavage, and is green in color.   _________________________________   12. For each mineral listed below, list at least one diagnostic property.  MINERAL NAME:            DIAGNOSTIC PROPERTY Halite:     ______________________________________ Galena:   ______________________________________ Magnetite: _____________________________________ Muscovite: _____________________________________ Hematite: ______________________________________ Fluorite: _______________________________________ Talc:  _________________________________________ Graphite: ______________________________________ Calcite:  _______________________________________   13. List the two most common rock-forming mineral groups. _____________________________________ _____________________________________   14. Providean economic use for each mineral listed below. Galena: _______________________ Hematite: _____________________ Graphite: ______________________ Sphalerite: _____________________ Gypsum: ______________________ Calcite: _______________________