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Rock Test 2

Rock Test 2 Write down details on each rock as seen under PPL and XPL on the worksheets provided for you; then identify the rock type (igneous/ sedimentary/metamorphic) and name the rock. under PPL and XPL grain type (crystalline or fragmental)

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Rock Test 2

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  1. Rock Test 2 • Write down details on each rock as seen under PPL and XPL on the worksheets provided for you; then identify the rock type (igneous/ sedimentary/metamorphic) and name the rock. • under PPL and XPL • grain type (crystalline or fragmental) • grain size (coarse, medium, fine) • grain shape (rounded, angular, variable) • grain relationships (grains/crystals of similar size; • large crystals in fine matrix; • grains/crystals randomly distributed; • crystals lined up in one direction) • minerals present (identified by . . . & . . . % in rock) • other features (fossils present, muddy matrix, glass) • colour under PPL (mainly light or dark) • colour under XPL (mainly grey/black or brightly coloured)

  2. The ROCKS to choose from :(not given in this order) • granite • diorite • gabbro • dolerite • basalt • shelly limestone • sandstone • arkose • greywacke • marble • schist

  3. PPL XPLRock 1

  4. PPL XPLRock 2

  5. PPL XPLRock 3

  6. PPL XPLRock 4

  7. PPL XPLRock 5

  8. PPL XPLRock 6

  9. PPL XPLRock 7

  10. PPL XPLRock 8

  11. PPL XPLRock 9

  12. PPL XPLRock 10

  13. air bubble PPL XPLRock 11

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