Minerals

1
Minerals Mineral ID
JEOPARDY
With special hosts YOU and your friendly teacher
2
The Board
3
Wild Card 100

• The mineral barite (BaSO4) is a(an)
• (belongs to which mineral group ?)
• Answer- It belongs to the group of SULFATES (all
  have SO4)
• Return to board

4
Wild Card 300

• What is the most abundant type of minerals in
  Earths crust?
• Answer- SILICATES
• (all have Si and O Actually more O than Si)
• Return to board

5
Wild Card 400

• A mineral characteristic that is too variable to
  be diagnostic of specific minerals.
• Answer- COLOR. Should only be used after
  assessing more diagnostic characteristics
  (hardness, streat, cleavage, etc.)
• Return to board

6
Wild Card 500

• What are the elements contained in the type of
  minerals called OXIDES ?
• Answer- Oxygen and a metal (FeO3hematite,
  FeO4magnetite)
• Return to board

7
Anything goes 100

• Approximately what percent of Earths crust is
  made of silicates?
• Answer- Over 90 !! (about 96)
• Return to board

8
Anything goes 200

• Why petroleum is not a mineral?
• Answer- 1- It is not a solid 2- it does not form
  crystals, 3- is organic in origin.
• Return to board

9
Anything goes 300

• Double refraction is a property of some minerals.
  What is the mineral, and what is a common form of
  it that may or not have double refraction?
• Answer- SPAR (a type of CALCITE).
• Return to board

10
Anything goes 400

• If a mineral reacts with HCl, a) what specific
  chemical compound does it contain? b) To what
  mineral group does it belong ?
• Answer- a) It contains carbonate (CO3)
• b) It belong to the group of the CARBONATES
• Return to board

11
Anything goes 500

• How many different minerals are known from the
  Earths Crust ?
• Answer- About 4000 (3000-4000 is a good answer)
• Return to board

12
Crystals 100

• Crystals are classified according of 3 main
  characteristics of their axes (plural of axis).
  What are these characteristics?
• Answer- The number of axes, the length of each
  axis, and the angles the axes made with one
  another.
• Return to board

13
Crystals 200

• The basic unit of silicate crystals is the SILICA
  TETRAHEDRON. What is the structural formula of
  this basic unit?
• Answer- Si04 (4 atoms of Oxygen bonded to an atom
  of Silicon)
• Return to board

14
Crystals 300

• What causes mica to have dramatic cleavage
  properties (think of chemical bonds)?
• Bonds among individual sheets are weaker than
  those within each sheet ? cleaves easily in
  sheets before fracture within sheets.
• Return to board

15
Crystals 500

• What are the 3 main conditions that determine
  crystal shape and size?
• Answer- a) Chemical composition (crystal type)
  b) time available for crystallization (size of
  crystal) c) space available (correct versus
  deformed shape)
• Return to board

16
Crystals 400

• Can ice be considered a crystal ?
• Answer- YES. Ice is the only form of water that
  can be considered a crystal. It meets all 4
  criteria for minerals.
• Return to board

17
Mineral Formation 100

• Graphite, Coal and Diamonds have the same
  chemical composition.
• a) What is the complete molecular formula? b)
  which of these 3 materials are considered
  minerals?
• Answer- a) All three are made of pure Carbon (C).
  b) Only graphite and diamonds are minerals.
• Return to board

18
Mineral formation 200

•  What causes the various colorations of different
  forms of quartz?
• Answer- Trace elements present. The basic
  composition of quartz is SiO4
• Return to board

19
Mineral Formation 400

• If you see a perfectly clear (transparent)
  crystal of quartz, can you tell its complete
  chemical composition?
• Answer- Yes. It is made exclusively of SiO4
• Return to board

20
Mineral Formation 500

• To what mineral group does Malachite (the common
  ore of copper) belong? What is its chemical
  formula?
• Answer- It is a CARBONATE (CuCO3). It is also
  known as cupric carbonate.
• Return to board

21
Mineral Formation 300

• Name 4 minerals belonging to the Native
  Elements group of minerals.
• Answer- Gold (Au), Silver (Ag), Copper (Cu), and
  Sulphur (S).
• Return to board

22
Identifying minerals 300

• What mineral is
• Colorless, hexagonal crystal shape, conchoidal
  breakage, and hardness of 7 ?
• Answer- It will have to be a crystal of quartz !
• Return to board

23
Identifying minerals 400

• What mineral is
• Colorless or with color, very hard (9), no
  cleavage, hexagonal crystals, commonly used as
  abrasive.
• Answer- It will have to be Corundum !
• Return to board

24
Identifying minerals 500

• What mineral is
• Red or yellow-red, 7.5 hardness, conchoidal
  fracture, frequently used as a jewel.
• Answer- It is a GARNET !
• Return to board

25
Identifying minerals 200

• What mineral is
• Yellow to yellow-black, has green-gray-black
  streak, and cubic crystals?
• Answer- It is iron Pyrite !
• Return to board

26
Identifying minerals 100

• What are the 4 Special properties, or Other
  properties that are useful in mineral
  Identification?
• Answer- 1) HCL reaction, 2) magnetism, 3) taste,
  4) double refraction
• Return to board

27
Wild Card 300

• When is an former ORE not an ore anymore?
• Answer- When its mining is not profitable anymore
  (the richest part of the mine has already been
  extracted)
• Return to board

28
Wild Card 200

• What is the difference between a jewel and a gem?
• A gem is a mineral that is prized for its rarity,
  beauty and value. Jewels may or not be minerals
  (for instance, a pearl ring is a jewel but not a
  gem and not a mineral)
• Return to board