Geology Lab Practical

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Anonymous
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75128
Filename:
Geology Lab Practical
Updated:
2011-03-25 01:13:48
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minerals sedimentary igneous metamorphic
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Geology Rock Labs
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  1. - No Cleavage
    - H=5
    - Dull, Earthy, globular
    • LIMONITE
    • Family: Oxide

  2. - Cubic Cleavage
    - H=2.5
    - vitreous, transpartent
    • HALITE
    • Family: Halide

  3. - one perfact cleavage, thin
    - H=2.5
    - vitreous luster
    • BIOTITE
    • Family: Silicate

  4. - 1 plane of cleavage
    - H= 6-7
    - sub vitreous
    • EPIDOTE
    • Family: Silicate

  5. - striations!
    - 2 planes of cleavage
    - H= 6
    - pearly to vitreous
    • PLAGIOCLASE
    • Family: Silicate

  6. - rhobohedral cleavage
    - H=3
    - cleavable masses, earthy, granular
    - HCL
    • CALCITE- CRYSTAL
    • Family: Carbonate

  7. - primatic crystals, cleavable
    - 2 cleavage planes
    - H=6
    - vitreous, pearly to chalky NO striations
    • ORTHOCLASE
    • Family: Silicate

  8. - rhombohedral crystals, granular, cleavable
    - H=3.5
    - vitreous to earthy
    - hcl in powder form
    • DOLOMITE
    • Family: Carbonate

  9. -hexagonal crystals with horizontal striaitions
    - H=7
    - transparten to translucent
    -conchoidal fracture, lack of cleavage
    • QUARTZ- ROSE
    • Family: Silicates

  10. - scaly sheets
    - one perfect cleavage
    - H=2
    • MUSCOVITE
    • Family: Silicates

  11. - prismatic or elongate crystals
    - two cleavage planes
    - H= 5.6-6
    • HORNBLENDE
    • Family: Silicates

  12. - cleavable masses
    -rhombohedral cleavage
    - H=3
    -vitreous to earthy
    -HCL
    • CALCITE- CLEAVING
    • Family: Carbonate

  13. - hexagonal crystals, horizontal striations , lack of cleavage
    - H=7
    - translucent to transparent
    - glassy luster
    • QUARTZ- FRACTURED
    • Family: Silicate

  14. - gravel and pebble size filled with sand, silt, clay
    • CONGLOMERATE
    • Clastic

  15. sand grains, easily visible
    - shells, fossils present
    • SANDSTONE- FOSSILIFOROUS
    • Clastic

  16. fine grained to granular, fossils, shells abundant
    HCL
    • LIMESTONE- ORGANIC
    • Non- clastic

  17. banded, no texture, smooth, conchoidal
    H=7
    • CHERT
    • Non-clastic

  18. unseen silt particles
    low gravity!
    no cleavage
    • MUDSTONE (SC)
    • Clastic

  19. fine grained to granular
    HCL
    easily scratched
    • LIMESTONE- ORGANIC/ REEF
    • Non- clastic

  20. sandy grains, easily visible
    rich in quartz
    H> 5
    • SANDSTONE-QUARTZ
    • Clastic

  21. H >5
    sand grains
    rich in filedspar
    • ARKOSE- SANDSTONE
    • Clastic

  22. fine grain to granular
    HCL
    soft
    • (SHALEY) LIMESTONE
    • non- clastic

  23. fine grain to granular
    inorganic chemical precipitate
    silt and sand size spheroids
    • LIMESTONE- OOLITIC/ ORGANIC
    • Non clastic

  24. fine grain to granular
    red yellow brown bands
    mexican onyx
    • TRAVERTINE (LIMESTONE)
    • non clastic

  25. fine grain to granularinorganic chemical precipitatesilt and sand size spheroids
    • OOLITIC LIMESTONE
    • nonclastic

  26. fine grain to granularinorganic chemical precipitatesilt and sand size spheroids
    • OOLITIC LIMESTONE
    • non- clastic

  27. glassy groundmass
    lack cleavage
    greasy luster
    • RHYOLITE
    • Aphanitic (Porphyritic)

  28. coarse to fine
    light color
    quartz!
    • GRANITE
    • phaneritic

  29. consolidated lava flows
    • BASALT
    • aphanitic (vesicular)

  30. porous!
    plagio, mafic, hornblende, augite, olivine
    • SCORIA
    • vesicular

  31. coarse to fine
    light color
    quartz!
    • GRANITE
    • phaneritic

  32. gabbro dark/ salt pepper
    coarse to fine
    granular
    no quartz, plagio, and ferromag
    • GABBRO
    • phaneritic

  33. glass types, sand size or smaller, gritty
    light color
    low gravity
    HCL
    • VOLCANIC ASH "TUFF"
    • phaneritic

  34. coarse to fine
    light color
    quartz!
    • GRANITE
    • phaneritic

  35. glassy or vesicular
    porous!
    low gravity
    • PUMICE
    • vesicular

  36. black, transpartent edges, conchoidal
    • OBSIDIAN
    • vitreous

  37. glass types, sand size or smaller, gritty
    light color
    low gravity
    HCL
    • VOLCANIC ASH "TUFF"
    • phaneritic

  38. glassy groundmass
    lack cleavage
    greasy luster
    • RHYOLITE
    • aphanitic (porphyritic)

  39. coarse to fine
    light color
    quartz!
    • GRANITE
    • phaneritic

  40. glassy groundmass
    lack cleavage
    greasy luster
    • RHYOLITE
    • phaneritic

  41. granular, sharp edges, conchoidal fracture
    breaks through the grains
    h= 7
    • QUARTZITE
    • non foliated

  42. green, dark
    no visible grains, veinlets
    amorphous
    h=4
    • SERPENTINE
    • non foliated

  43. silky or shiny appearance
    not thickly banded, grains visible
    parallel but not alligned
    • BLUE SHIST
    • foliated

  44. black and white bands
    coarsley banded, visible grains, crystalline
    • GNEISS
    • foliated


  45. extremely fine grained
    smooth
    shiny luster
    • PHYLLITE
    • foliated

  46. black and white bands
    coarsley banded, visible grains, crystalline
    • GNEISS
    • foliated

  47. crystalline granular, no paralllelism
    HCl
    scratches easily
    • MARBLE
    • non foliated

  48. dull, no visible mineral grains
    parallel crystals, rock cleavage
    harder than shale
    • SLATE
    • foliated

  49. extremely fine grained
    smooth
    shiny luster
    • PHYLLITE
    • foliated

  50. silky or shiny appearance
    not thickly banded, grains visible
    parallel but not alligned
    • SCHIST
    • foliated

  51. crystalline granular, no paralllelism
    HCl
    scratches easily
    • MARBLE
    • non foliated

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