Mineralogy

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danger
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178755
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Mineralogy
Updated:
2012-10-21 15:17:43
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Mineral Symmetries
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Mineral Symmetries for Lab Test 1
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  1. triclinic
    Alsheet silicate 
    alterationof f-sp & other Al-bearing minerals
    kaolinite
  2. monoclinic
    Na,Ca,Al,Mg clay (n·H2O)
    alteration of silicates, esp. f-sp in low-silica rx
    montmorillonite
  3. orthorhombic
    S
    Evaporites, bedded salt deposits (with petroleum)
    native sulfur
  4. orthorhombic
    FeO(OH)
    Oxidation product of Fe-minerals; bog Fe (direct ppt)
    goethite
  5. Fe oxides & hydroxides
    limonite
  6. hexagonal
    Ca5(PO4)3(F,Cl,OH)
    Ubiquitous accessory mineral; marine inorganic ppt
    apatite
  7. monoclinic
    Cu carbonate
    Secondary Cu mineral in sulfide deposits
    azurite
  8. hexagonal
    Fe2O3
    Ig accessory, BIF’s
    hematite 
  9. monoclinic
    CaSO4·2H2O
    Evaporite
    gypsum
  10. orthorhombic
    CaSO4
    Lower parts of evaporites
    anhydrite
  11. isometric
    Fe3O4
    Huge igneous (mafic) & sed deposits (BIF’s); accessory
    magnetite
  12. hexagonal
    CaCO3
    Carbonate sed rx, marbles, hydrothermal veins
    calcite
  13. orthorhombic
    CaCO3
    Sed carbonate environ’s, hi P - low T met rx; travert.
    aragonite
  14. monoclinic
    Ca-Mg px
    Skarn, kimberlites
    diopside
  15. monoclinic
    Mg amph
    Skarn
    tremolite
  16. isometric
    Ca-Al garnet
    Met'sm of calcareous rx (skarns)
    grossular(ite)
  17. isometric
    Au, usually with Ag
    Hydrothermal veins, placers
    native gold
  18. orthorhombic
    BaSO4
    Hydrothermal veins, replacement veins/cav’s in ls/dol’s
    barite
  19. isometric
    NaCl
    Evaporite
    halite
  20. hexagonal
    CaMg(CO3)2
    Carbonate sed rx, marbles
    dolomite
  21. monoclinic
    Fe-Mg sheet silicate
    Low grade met rx
    chlorite
  22. triclinic & monoclinic
    Mg sheet silicate
    Alteration product of Mg-silicates in ultramafics
    talc
  23. monoclinic
    Mg sheet silicate
    Low grade metasomatism of ultramafics
    serpentine
  24. Fe-Mg amph
    Alteration of mafics
    actinolite
  25. orthorhombic
    Fe-Mg amph
    Met alteration of ultramafics
    anthophyllite
  26. monoclinic
    Ca-Al-Fe silicate
    Low grade mafic met rx
    epidote
  27. isometric
    Fe-Al garnet
    Medium grade met rx, clastic sed rx
    almandine
  28. triclinic
    Al2SiO5
    High P pelitic met rx
    kyanite
  29. orthorhombic
    Al2SiO5
    Low P pelitic met rx
    andalusite
  30. orthorhombic
    Al2SiO5
    High T pelitic met rx
    sillimanite
  31. monoclinic
    Fe-Al silicate
    Med grade met rx
    staurolite
  32. isometric
    FeS2
    Accessory in all rock types; massive sulfides
    pyrite
  33. tetragonal
    CuFeS2
    Porph. Cu, skarn, massive sulfides (VMS)
    chalcopyrite
  34. isometric
    PbS
    CO3-hosted Pb-Zn deposits, massive sulfides,
    galena
  35. isometric
    ZnS
    CO3-hosted Pb-Zn deposits, massive sulfides
    sphalerite
  36. orthorhombic
    Sb2S3
    low temperature hydrothermal veins
    stibnite
  37. monoclinic
    Fe-Mg px
    Ig rx, hi grade metamorphic rx
    augite
  38. isometric
    CaF2
    Hydrothermal veins; access. in ls, ig & metamorphic rx
    fluorite
  39. hexagonal
    SiO2
    Silicic ig rx, clastic sed rx, widespread met rx
    quartz
  40. triclinic & monoclinic
    KAlSi3O8
    Felsic ig, clastic sed rx, widespread met rx
    K-feldspars
  41. triclinic
    NaAlSi3O8 - CaAl2Si2O8
    Widespread ig, clastic sed rocks, widespread met rx
    plagioclase
  42. monoclinic
    K(Mg,Fe)3(AlSi3O10)(OH)2
    Ubiquitous
    biotite
  43. monoclinic
    KAl2(AlSi3O10)(OH)2
    Ubiquitous, esp. felsic ig plutonics, met rx, ss
    muscovite
  44. monoclinic
    Fe-Mg amph
    Met rx (amphibolites), mafic, ultramafics; ig & met acc
    hornblende
  45. hexagonal
    Be-silicate
    Granitic rx & peg's; v. hi T hydrothermal rx (greisen)
    beryl
  46. hexagonal
    borate-silicate
    Felsic plutonics; ig, met, sed acc
    tourmaline
  47. tetragonal
    ZrSiO4
    Accessory in felsic ig rx & metamorphic derivatives
    zircon
  48. hexagonal
    Na-K-Al
    silicate
    Alkaline (Si-undersaturated) ig rx
    nepheline
  49. orthorhombic
    Mg px
    Mafic, ultramafic ig rx, high grade met rx
    enstatite
  50. isometric
    FeCr2O4
    Mafics & ultramafics
    chromite
  51. hexagonal
    FeTiO3
    Ig & met accessory, marine sands
    ilmenite
  52. tetragonal
    TiO2
    Ig & met accessory, marine sands
    rutile
  53. isometric
    Cu
    Reduction of secondary Cu minerals in oxidized zone
    native copper
  54. monoclinic
    Fe1-xS (x=0-0.2)
    Mafics, ultramafics; high grade met. rx & hydroth. veins
    pyrrhotite
  55. orthorhombic
    (Fe,Mg)2SiO4
    Mafic & ultramafic rx
    olivine
  56. isometric
    MgAl2O4
    Dolomitic skarns, high P ultramafics, all. & mar. placers
    spinel
  57. hexagonal
    Al2O3
    High grade met rx (Al-rich), alluvial & marine placers
    corundum
  58. isometric
    C
    Kimberlites, placers
    diamond
  59. hexagonal
    C
    High grade metamorphic rocks
    graphite

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