ESC. 2000 Chp 3 Quiz.docx - .

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Question 1 1 / 1 pts According to Mohs hardness scale Click to view larger image.    calcite is softer than talc.    gypsum is softer than fluorite.    diamond is about 6 in hardness.    quartz is softer than talc. FEEDBACK: Using Mohs hardness scale, quartz and calcite are harder than talc and  diamond is about 10 on the scale. Gypsum is softer than fluorite.   Question 2
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1 / 1 pts Asbestos was widely used as a fireproofing insulation. Why is it no longer used?    It can pollute the groundwater.    When inhaled it can embed in the lungs and cause cancer.    When touched it can cause severe burns.    Toxic lead can leach out over time, resulting in lead poisoning. FEEDBACK: Asbestos refers to a group of silicate minerals that grow in thin fibers.  Breathing asbestos can embed fibers in the lungs and cause cancer. Asbestos does not give off toxic lead, pollute groundwater, or cause burns. It is only dangerous when  inhaled.   Question 3 1 / 1 pts Calcite and aragonite minerals that constitute clamshells are examples of which method of mineral formation?    Precipitation from a solution    Biomineralization    Solid-state diffusion    Solidification of a melt FEEDBACK: In this case, the minerals calcite and aragonite are formed biologically by  the organism (the clam). Ice is an example of a mineral formed from the solification of a 
Image of page 2
melt, halite is an example of one precipitated from a solution, and minerals in  metamorphic rocks are examples of those formed by solid-state diffusion.   Question 4 1 / 1 pts Crystalline rocks    are only sedimentary.    are rocks whose grains grew to interlock.    are rarely found in outcrops.    are often found with calcite cement. FEEDBACK: Crystalline rocks form when minerals grow together and interlock. They  can be igneous, sedimentary or metamorphic, and are not clastic with cement.  Crystalline rocks are common in outcrops.   Question 5 1 / 1 pts Diamonds are very hard gemstones that form    by precipitation in a freshwater lake.   when quartz and other silicate minerals are subjected to high pressure.    when graphite is subjected to high pressure.    from biomineralization like an oyster pearl.
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
FEEDBACK: Diamonds form when graphite is subjected to very high pressure  conditions inside the Earth. Diamonds are not biomineralized like pearls or precipitated  from water.   Question 6 1 / 1 pts Glass is not considered a mineral because    it is not solid.
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern