Geology: Mineral Test 2 for higher

1

• Mineral Test 2
• Write down details on each mineral as seen under
  PPL and XPL on the worksheets provided for you
  then name the mineral
• under PPL
• colour
• transparency
• relief
• crystal fragment shape
• cleavage
• fracture
• pleochroism
• under XPL
• interference colours
• twinning
• extinction angle

2

• The MINERALS to choose from
• (not given in this order)
• quartz
• microcline
• plagioclase
• muscovite
• biotite
• amphibole
• pyroxene
• olivine
• garnet
• calcite

3
mineral 1
mineral 1
PPL XPL Mineral 1
4
mineral 2
mineral 2
mineral 2
mineral 2
PPL XPL Mineral 2
5
mineral 3
mineral 3
mineral 3
Mineral 3 (view on right - under PPL)
6
mineral 4
mineral 4
PPL XPL Mineral 4
7
mineral 5
mineral 5
PPL XPL Mineral 5
8
mineral 6
mineral 6
PPL XPL Mineral 6
9
Mineral 7
mineral 7
mineral 7
PPL lower view rotated 70o
XPL
mineral 7
10
mineral 8
mineral 8
PPL XPL Mineral 8 (consists
entirely of mineral 8)
11
mineral 9
mineral 9
mineral 9
PPL XPL Mineral 9
12
mineral 10
mineral 10
mineral 10
mineral 10
PPL XPL Mineral 10