This is Throwback Thursday #60. In these, we look back into the past at ESCONI specifically and Earth Science in general. If you have any contributions, (science, pictures, stories, etc ...), please sent them to [email protected]. Thanks!
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We don't have enough mineral posts and sorry to surprise everyone with a pop quiz.... But today, we have a mineral quiz from the November 1966 edition of the newsletter. Try you luck.... we'll post the answers in a couple days.
TRY YOUR LUCK WITH THIS MINERAL QUIZ??????
1. When you rub the fresh surface of a mineral on in unglazed tile the streak is:
a. Always the same color as that of the mineral
b. Sometimes an entirely different color from that of the mineral
c. Never colorless
2. A well-developed quartz crystal is geometrically
a. Octahedral
b. Cubic
c. Hexagonal- triagonal trapezohedral
3. The luster of a mineral refers to its
a. Color
b. Outward appearance
c. Streak
4. A mineral you can't scratch with your fingernail is
a. Calcite
b. Gypsum
c. Talc
5. Cleavage in crystalline minerals is the
a. way in which a mineral breaks naturally and and smoothly
b. Breaking of a mineral in random or irregular order
c. Breaking of a mineral in planes that are not parallel to any actual or possible crystal faces the mineral possesses.
6. Weathering may change one mineral into another. It is then called a pseudomorph (false form). A special name is applied to indicate type of change. A mineral chemically altered solely by the addition of water molecules is
a. Garnet
b. Azurite
c. Gypsum
7. Color is a clue in prospecting for copper ore. Stains on outcropping veins may indicate the presence of copper below when they are
a. Yellow and brown
b. Green and blue
c. Black and red
8. A mineral that can scratch window glass is
a. Apatite
b. Fluorite
c. Quartz
9. Crystals of minerals which grow close together may cause an intergrowth of two crystals or several intergrowths. This is known as
a. Parallel growth
b. Twinning
c. A distorted crystal
10. The following minerals are unusual because of the products obtained from them. The nearly black mineral that produces a product for making the whitest of paints is.
a. Ilmenite
b. Cinnabar
c. Wolframite
Note: this quiz originated from Science Digest, but we got it from the KGMS (Kalamazoo Geological & Mineral Society). We've had a relationship with the KGMS, sharing a few field trips. They joined us at Braceville in the fall of 2020 and we visited the Cheney Limestone in Bellevue, MI with them last fall.
