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{"sheet":"Low Power PPL and XN  Recon","index":0,"n_rows":35,"n_cols":3,"rows_kept":35,"cut":false,"hidden":false,"merged":[[34,0,48,3],[11,0,13,0],[11,1,13,3],[14,0,30,3],[31,0,33,0],[31,1,33,3],[7,1,7,3],[8,1,8,3],[9,1,9,3],[10,1,10,3],[1,2,1,3],[2,1,3,3],[5,1,5,3],[6,1,6,3]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[null,null,"Sample #:"]
["Geologic  Context:","What do you know about this sample? (This will help you use your knowledge  of geology to determine what minerals may be present, or must be excluded)"]
[]
["Igneous/sedimentary/metamorphic?"]
["Sample location?  "]
["Geologic setting"]
["Rock type"]
["Other useful information?"]
[]
["Microscope Set-up","Key Observations"]
["1. Low Power, PPL Reconaissance","What do you see?  How many different minerals are evident? Note different minerals distinguished by: large v. small, shape--platy, equant, prismatic, etc.   Do some minerals show distinctive colors? A sketch might be useful."]
[]
[]
["Notes: List the different types of minerals that you will need to identify. Annotate your sketch or photo."]
{"$rows_empty":16}
["2. Low Power, XN  Reconaissance","What do you see now? Note different mineral types with these properties: isotropic v. anisotropic; high v. low birefringence; parallel v. inclined extinction. What interesting textures do you see:  e.g. alignment of grains; inclusions of one mineral in another;  minerals that appear to replace or overgrow another.  "]
[]
[]
["Notes: List the different types of minerals that you will need to identify. Annotate your sketch or photo."]

{"sheet":"Opaque and Isotropic Minerals","index":1,"n_rows":37,"n_cols":5,"rows_kept":37,"cut":false,"hidden":false,"merged":[[33,4,34,4],[36,0,50,4],[33,0,34,0],[33,1,34,1],[33,2,34,2],[33,3,34,3],[12,0,26,4],[28,0,28,4],[29,2,29,3],[31,0,32,0],[31,1,32,1],[31,2,32,2],[31,3,32,3],[31,4,32,4],[8,4,9,4],[10,0,11,0],[10,1,11,1],[10,2,11,3],[10,4,11,4],[7,2,7,3],[8,0,9,0],[8,1,9,1],[8,2,9,3]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification"]
[]
["A.  Opaque Minerals--describe the shape and occurrence of all opaque minerals"]
["Microscope Set-Up",null,"Plane Polarized Light"]
[]
["Describe:","Habit","Crystal Form",null,"Occurrence (inclusions, disseminated…) "]
["Opaque 1"]
[]
["Opaque 2"]
[]
["Notes and Sketch:"]
{"$rows_empty":15}
["B.  Isotropic Minerals--describe the properties of any isotropic minerals"]
["Microscope Set-Up",null,"Cross Polarized Light"]
[]
["Mineral Name","Habit, form, shape","Cleavages; how many, what angles?","Relief: high, med,   low","Other:  Color, occurrence (vein, porphyroblast, etc)."]
[]
["Iso 1:"]
[]
["Iso 2:"]
["Notes and Sketch:"]

{"sheet":"Anisotropic Primary Minerals","index":2,"n_rows":116,"n_cols":4,"rows_kept":116,"cut":false,"hidden":false,"merged":[[98,0,105,3],[106,0,106,1],[115,0,122,3],[39,0,39,3],[96,0,97,0],[96,1,97,1],[96,2,97,2],[96,3,97,3],[93,0,94,0],[93,1,94,1],[93,2,94,2],[93,3,94,3],[56,0,63,3],[64,0,64,1],[73,0,80,3],[87,0,87,2],[54,0,55,0],[54,1,55,1],[54,2,55,2],[54,3,55,3],[51,0,52,0],[51,1,52,1],[51,2,52,2],[51,3,52,3],[16,0,22,3],[23,0,23,1],[32,0,38,3],[45,0,45,2],[11,3,12,3],[14,0,15,0],[14,1,15,1],[14,2,15,2],[14,3,15,3],[5,0,5,2],[11,0,12,0],[11,1,12,1],[11,2,12,2]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["C.  Primary Minerals (Paragenesis)"]
[]
["Mineral 1 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
[]
[]
[]
[]
[]
[]
["Mineral 2 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]
{"$rows_empty":7}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["C.  Primary Minerals (Paragenesis)"]
[]
["Mineral 3 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
{"$rows_empty":7}
["Mineral 4 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]
{"$rows_empty":8}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["C.  Primary Minerals (Paragenesis); Anisotropic minerals;"]
[]
["Mineral 5 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
{"$rows_empty":7}
["Mineral 6 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]

{"sheet":"Accessory Minerals","index":3,"n_rows":74,"n_cols":4,"rows_kept":74,"cut":false,"hidden":false,"merged":[[57,0,63,3],[64,0,64,1],[55,0,56,0],[55,1,56,1],[55,2,56,2],[55,3,56,3],[73,0,81,3],[52,0,53,0],[52,1,53,1],[52,2,53,2],[52,3,53,3],[16,0,22,3],[32,0,39,3],[46,0,46,2],[23,0,23,1],[14,0,15,0],[14,1,15,1],[14,2,15,2],[14,3,15,3],[11,3,12,3],[5,0,5,2],[11,0,12,0],[11,1,12,1],[11,2,12,2]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["D.  Accessory Minerals:  zircon, apatite, titanite,…"]
[]
["Mineral 1 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
[]
[]
[]
[]
[]
[]
["Mineral 2 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]
{"$rows_empty":8}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["D.  Accessory Minerals--zircon, apatite, titanite, …."]
[]
["Mineral 3 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
[]
[]
[]
[]
[]
[]
["Mineral 4 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]

{"sheet":"Alteration or Retrograde Mins ","index":4,"n_rows":74,"n_cols":4,"rows_kept":74,"cut":false,"hidden":false,"merged":[[11,3,12,3],[5,0,5,2],[11,0,12,0],[11,1,12,1],[11,2,12,2],[14,0,15,0],[14,1,15,1],[14,2,15,2],[14,3,15,3],[16,0,22,3],[32,0,38,3],[46,0,46,2],[23,0,23,1],[52,0,53,0],[52,1,53,1],[52,2,53,2],[52,3,53,3],[57,0,63,3],[64,0,64,1],[73,0,80,3],[55,0,56,0],[55,1,56,1],[55,2,56,2],[55,3,56,3]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["D.  Alteration or Retrograde Minerals--sericite, chlorite, carbonate…."]
[]
["Mineral 1 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
[]
[]
[]
[]
[]
[]
["Mineral 2 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]
{"$rows_empty":8}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["3.  Mineral Identification--Anisotropic Minerals"]
["D.  Alteration or Retrograde Minerals--sericite, chlorite, carbonate,…."]
[]
["Mineral 3 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
[]
["Notes and Sketch:"]
[]
[]
[]
[]
[]
[]
["Mineral 4 Name:"]
["Physical Properties","Habit/Form/Shape","Cleavage; How many; Angles","Other"]
[null,null,"  "]
["Optical Properties","Uniaxial/Biaxial","Optic Sign (+ or -)","2V (if biaxial)"]
[]
["Relief (high, med,low)","Birefringence (high med low, 1º 2º 3º…color)","Pleochroism/Color","Extinction Angle; parallel, inclined, symmetrical"]
[]
["Length Fast/Slow","Twins--type","Compositional Zoning","Other"]
[]
["Notes and Sketch:"]

{"sheet":"Igneous Petrography","index":5,"n_rows":186,"n_cols":5,"rows_kept":186,"cut":false,"hidden":false,"merged":[[104,3,104,4],[99,3,99,4],[100,3,100,4],[102,3,102,4],[103,3,103,4],[73,0,73,1],[85,0,85,3],[96,3,96,4],[74,0,74,1],[76,0,76,1],[79,0,79,1],[82,0,82,1],[97,3,97,4],[98,3,98,4],[81,0,81,1],[52,0,52,1],[53,0,53,1],[37,3,80,4],[67,0,67,1],[70,0,70,1],[71,0,71,1],[78,0,78,1],[77,0,77,1],[60,0,60,1],[61,0,61,1],[62,0,62,1],[66,0,66,1],[56,0,56,1],[57,0,57,1],[58,0,58,1],[59,0,59,1],[44,0,44,1],[45,0,45,1],[43,0,43,1],[49,0,49,1],[46,0,46,1],[37,0,37,1],[38,0,38,1],[39,0,40,1],[41,0,41,1],[32,0,32,1],[33,0,33,1],[34,0,34,1],[27,3,36,4],[14,3,26,4],[14,0,14,1],[16,0,16,1],[17,0,17,1],[18,0,18,1],[19,0,19,1],[22,0,22,1],[12,0,12,4],[9,1,9,4],[10,1,10,4],[2,1,2,4],[4,0,4,4],[5,1,6,4],[7,1,7,4],[8,1,8,4]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["Igneous Petrography","Based on H. Williams, F.J. Turner, C. M., Gilbert, (1982),                        Petrography An Intrdocution to the Study of Rocks in Thin Sections,       2nd Ed., p. 53-67 and 79-89."]
[]
["Sample #:"]
["Geologic  Context:","Before you start: What do you already know about this sample? This will help you use your knowledge of geology to determine what minerals may be present, and what textures are significant to interpret geologic processes and history.    "]
[]
["Sample location?  "," "]
["Geologic setting?"]
["Rock type or association, if known?"]
["Other useful information?"]
[]
["The following observations could or should be made for any petrographic analysis of an igneous rock. This guide will help you to ask the appropriate questions, and seek the  answers, that will lead you to the comprehensive description of a thin section that is needed to interpret geologic processes and history.  "]
[]
["1.  General Textural Characteristics",null,null," "]
[]
["A.  Degree of Crystallinity:  Is this rock"]
["Holocrystalline"]
["Amorphous (glassy)"]
["Does it have minute tabular crystals, microlites"]
[]
["B.  Grain Size"]
["     Aphanitic (not visible to the naked eye)"]
["     Microcrystalline (observed with a microscope)"]
["     Phaneritic (grains observable with hand lens)"]
["     Uniform grain size,  < 1 mm, fine-grained"]
["     Uniform grain size, between 1-5 mm, medium grained"]
["     Uniform grain size, between 5 mm- 3 cm, coarse grained"]
["     Uniform grain size, > 3 cm, very coarse grained"]
[]
["C. Igneous Fabrics "]
["(Shape of individual grains and relationships between grains)"]
["Euhedral, grains entirely bounded by rational crystal faces"]
["Subhedral, grains partly bounded by rational crystal faces"]
["Anhedral, Devoid of crystal faces, irregular shapes"]
[]
[]
["D.   Some Specific Igneous Textures to Look For",null,null," "]
["Equigranular, equidimensional, equant grains of uniform size"]
["     Subhedral granular, some grains w/ eu-, sub-, and           anhedral (also called granitic, or hypidiomorphic-granular)"]
[]
["     Anhedral granular, most grains are anhedral"]
["Inequigranular Textures"]
["Porphyritic Texture"]
["     Fine grained \"groundmass\" or matrix is present"]
["     Distinctly larger phenocrysts are present"]
["Microporphyritic--phenocrysts must be seen with 'scope"]
["Serrate porphyritic--continuous variation in grain size"]
["Hiatal porphyritic--two distinct populations of grain sizes"]
["Glomeroporphyritic--phenocrysts in clusters"]
["Vitrophyric, phenocrysts lie in glassy matrix"]
[]
["Cumulate Textures--aggregate of grains accumulated due to crystal settling"]
["Intercumulus--minerals from interstitial melt in final stages of crystallization"]
[]
["Intergrowths"]
["Graphic, cuniform intergrowth of quartz and Kspar"]
["Myrmekite, \"wormy\" intergrowths of quartz in sodic plag; replacement of potassic feldspar at contacts with plag."]
["Ophitic, plag laths enclosed in large sub-hedral pyroxene"]
["Poikilitic, randomly oriented grains entirely enclosed by loptically contiuous crystals of another composition"]
["Exsolution"]
["     Perthite--lamellae of plagioclase in Kspar"]
["     Anti-perthite--laemellae of Kspar in plagioclase"]
["     \"Inverted Pigeonite\"--oriented cpx lamellae in opx"]
[]
["Some Reaction Textures"]
["     Relict minerals--remnants of an early stage of crystallization that have not been completely replaced  "]
["Coronas or Reaction Rims--early-stage grains surrounded by later overgrowths in a reaction series"]
[]
["Some Textures in Volcanic Rocks/Lavas"]
["Intergranular--small grains fill interstices "]
["Intersertal--interstices are filled with glass or secondary minerals"]
["Hyalopilitic--glass occupies interspaces between microlites "]
["Pyroclastic--fractured appearance of grains"]
["     Glass, Pumice, Fiamme "]
[]
["Matrix Grains"]
["     Felty--microlites of plag, irregularly oriented in matrix"]
["     Trachytic--sub-parallel orientation of microlites in matrix"]
["Vesicular--spherical or ovoid cavities in rock"]
["Amygdaloidal--vesicles filled with secondary minerals"]
["Drusy or Mariolitic--terminated crystals grow into vesicles"]
[]
["2.  Petrographic Classification of Igneous Rocks"]
[]
["A.  Color Index (CI): Ratio of dark to light colored minerals; estimated visually or determined by point count"]
[]
["B.  Modal Mineralogy","% Estimated or Point Count",null,"C. Plagioclase Composition","An%"]
[1,null,null,"Phenocrysts"]
[2,null,null,"Zoning"]
[3,null,null,"    Normal (Anx - Any)"]
[4,null,null,"     Reverse (Any-Anx)"]
[5,null,null,"     Oscillatory"]
[6,null,null,"Groundmass"]
[7,null,null,"D. Phenocryst %"]
[8]
[9,null,null,"E.  Alteration/Retrograde Minerals"]
[10,null,null,1]
["TOTAL",null,null,2]
[" ",null,null,3]
["G.  Volcanic Fragments",null,null,4]
["     Pumice",null,null,"F. Accessory Minerals"]
["     Glass shards",null,null,1]
["     Fiamme (bent and flattened glass)",null,null,2]
[null,null,null,3]
{"$rows_empty":27}
["IUGS Igneous Classification, Streckeisen (1976)"]
["Plutonic Felsic Rocks"]
[null,null,null,"Gabbroic Rocks"]
{"$rows_empty":21}
["Volcanic Felsic Rocks"]
[]
[]
[]
[null,null,null,"Ultramafic Rocks"]
{"$rows_empty":24}
[null,"Diagram used to Estimate the proportion components and matrix."]

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["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["Sedimentary Petrography--          Clastic Rocks","Based on H. Williams, F.J. Turner, C. M., Gilbert, (1982),                                       Petrography An Intrdocution to the Study of Rocks in Thin Sections,                                 2nd Ed., p. 300-314; 325-362"]
[]
["Sample #:"]
["Geologic  Context:","Before you start: What do you already know about this sample? This will help you use your knowledge of geology to determine what minerals may be present, and what textures are significant to interpret geologic processes and history.    "]
[]
["Sample location?  "," "]
["Geologic setting?"]
["Rock type or association, if known?"]
["Other useful information?"]
[]
["Clastic Textures"]
["Grain-supported"]
["Matrix-supported"]
["Grain Size"]
["     Very Coarse 2 mm-1 mm"]
["     Coarse 1 mm to 0.5 mm"]
["     Medium 0.5 mm to 0.25 mm"]
["     Fine 0.25 mm to 0.125 mm"]
["     Very  Fine--0.125mm-.05 mm"]
["Sorting"]
["      Well-sorted--all grains are of the same size"]
["      Poorly-sorted--a continuum of grain sizes"]
["Grain Shape"]
["       Rounded"]
["       Subrounded"]
["       Subangular"]
["       Angular"]
["       Spheroidal or Round"]
["       Disc-shaped or Platy"]
["       Prismatic"]
["Grain Orientation"]
["     Laminae--stratification on a mm-scale"]
["     Graded--grain size varies progressively from                         top to bottom"]
["     Cross-lamination--depostion from small ripples"]
["     Convolute lamination--graded layers deposited in turbidity currents"]
["      Imbricate--grains roughly parallel, but slightly dipping with respect to layering"]
[]
["Sandstone Classification"]
[null,null,null,"Grain/Clast Type","% Grains* Estimated or Point Count"]
["Argillaceous Matrix (matrix-supported)","%",null,"Quartz","%"]
["Framework (grain-supported)",null,null,"Feldspars (Plag + Kspar)","%"]
["Cements (Authigenic Minerals)",null,null,"Lithic Fragments","%"]
["     Quartz","%",null,"Chert/chalcedony","%"]
["     Chalcedony","%",null,"Volcanic glass/pumice","%"]
["     Calcite","%",null,"Micas","%"]
["     Other Carbonate (dol, sid, ank)","%",null,"Metamorphic mins","%"]
["     Phyllosilicate (kaol, chlor, smect)","%",null,"Other:","%"]
["     Gypsum, anydrite","%",null,"Other:","%"]
["     Hematite/FeOx","%",null,"Other:","%"]
["     Other…","%",null,"TOTAL","%"]
[null,null,null,"* Note:  This is an estimate of relative % of grains present, i.e. in a point count every grain is counted only once; this is in contrast with modal estimates of igneous rocks where the point count is done on a grid to estimate relative volume % (i.e. large phenocrysts will be counted multiple times."]
["Relative proportions of quartz (Q), feldspars (F), lithic fragments (L), and matrix (M) will be used to classify rocks in the family of sandstones: arenite, lithic arenite, felspathic arenite, arkose, subarkose,  etc. See diagrams on next page."]
[]
["Porosity (current % open pore space)","%"]
["Primary porosity (% open+%cement) ","%"]
[]
["Detrital Accessory Minerals"]
["     Zircon"]
["     Apatite"]
["     Fe-Oxides (magnetite, ilmenite)"]
["     Tourmaline"]
["     Titanite (sphene)"]
["     Other"]
["     Other"]

{"sheet":"Sed Non-clastic","index":7,"n_rows":32,"n_cols":2,"rows_kept":32,"cut":false,"hidden":false,"merged":[[32,0,38,3],[28,2,31,3],[26,0,26,1],[12,0,12,1],[13,0,13,1],[14,0,14,1],[15,0,15,1],[13,2,27,3],[18,0,18,1],[19,0,19,1],[8,1,8,3],[9,1,9,3],[10,1,10,3],[2,1,2,3],[4,0,4,3],[5,1,6,3],[7,1,7,3]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["Sedimentary Petrography--Limestones","Based on H. Williams, F.J. Turner, C. M., Gilbert, (1982),                        Petrography An Intrdocution to the Study of Rocks in Thin Sections, 2nd Ed.,     p. 363-397."]
[]
["Sample #:"]
["Geologic  Context:","Before you start: What do you already know about this sample? This will help you use your knowledge of geology to determine what minerals may be present, and what textures are significant to interpret geologic processes and history.    "]
[]
["Sample location?  "," "]
["Geologic setting?"]
["Rock type or association, if known?"]
["Other useful information?"]
[]
["Non-clastic Textures (Crystalline)"]
["Crystalline granular-- equant, uniform size"]
["Microcrystalline--individual grains can't be seen with eye; ~30 microns"]
["Crytpocrysalline--grains can't be seen in microscope; X-ray needed"]
[]
["Limestones"]
["Rock Name:"]
["(use chart on next page)"]
["MATRIX","% of Total Rock"]
["Microcrystalline calcite","%"]
["      Mud-supported"]
["Sparry calcite","%"]
["      Grain-supported"]
[]
["GRAIN TYPES (Allochems)"]
["     Skeletal grains (fossils)","%"]
["     Ooids","%"]
["     Pellets","%"]
["     Intraclasts","%"]
["TOTAL","%"]

{"sheet":"Metamorphic","index":8,"n_rows":193,"n_cols":5,"rows_kept":193,"cut":false,"hidden":false,"merged":[[79,0,90,2],[32,0,32,4],[2,1,2,4],[5,1,6,4],[7,1,7,4],[8,1,8,4],[9,1,9,4],[10,1,10,4],[62,0,62,2],[33,0,39,4],[76,0,76,2],[78,0,78,2],[68,0,68,2],[70,0,70,2],[71,0,71,2],[72,0,72,2],[74,0,74,2],[75,0,75,2],[67,0,67,2],[58,0,58,2],[59,0,59,2],[60,0,60,2],[61,0,61,2],[73,0,73,2],[65,0,65,2],[66,0,66,2],[53,0,53,2],[56,0,56,2],[57,0,57,2],[55,0,55,2],[54,0,54,2],[43,0,43,2],[44,0,44,2],[46,0,46,2],[52,0,52,2],[51,0,51,2],[4,0,4,4],[27,2,31,4],[26,2,26,4],[47,0,47,2],[48,0,48,2],[49,0,49,2],[45,0,45,2],[50,0,50,2],[42,0,42,2]],"flags":["formulas_cached_only"]}
["Guided Discovery and Scoring Rubric  for Petrographic Analysis of a Thin Section"]
[]
["Metamorphic Petrography","Based on H. Williams, F.J. Turner, C. M., Gilbert, (1982),                        Petrography An Intrdocution to the Study of Rocks in Thin Sections, 2nd Ed.,     p. 438-452;."]
[]
["Sample #:"]
["Geologic  Context:","Before you start: What do you already know about this sample? This will help you use your knowledge of geology to determine what minerals may be present, and what textures are significant to interpret geologic processes and history.    "]
[]
["Sample location?  "," "]
["Geologic setting?"]
["Rock type or association, if known?"]
["Other useful information?"]
[]
["Mineral Paragenesis","%"," "]
[1]
[2]
[3]
[4]
[5]
[6]
[]
["Retrograde/Replacement","%"]
[1]
[2]
[3]
[4]
[]
["Accessory Minerals","%","Possible Geothermobarometers; Exchange, Net Transfer; Gt-Bio, GASP"]
[1]
[2]
[3]
[4]
[]
["Evidence of Metamorphic Reactions:  (e.g. garnet + chlorite = biotite + staurolite)"]
{"$rows_empty":7}
["Metamorphic Textures"]
[{"$nulls":4},"Protoliths"]
["Shapes of Individual Crystals",null,null,null,"Para--sedimentary origin"]
["     Porphyroblast--large grains in matrix",null,null,null,"Ortho--igneojus origin"]
["     Idioblastic--grains with rational crystal faces",null,null,null,"     Ultramafic"]
["     Hypidoblastic-- some grains with Xtal faces",null,null,null,"     Mafic or Basite"]
["     Xenoblastic--no regular crystal faces",null,null,null,"     Pelitic"]
["     Lepidobalastic--aligned platy minerals",null,null,null,"     Semi-pelitic or Psammitic"]
["     Poikiloblastic--small grains in larger porphyro..",null,null,null,"     Carbonate"]
["     Decussate--random arrangement of minerals",null,null,null,"     Quartofeldspathic"]
["     Mosaic, or granoblastic",null,null,null,"     Other (e.g. BIF, Manganiferous….)"]
[" "]
["Foliations (how many and what types?)",null,null,null,"Relict Textures"]
["     Gneissic--compositional layering (define scale)",null,null,null,"     Igneous: porphyritic, ophitic, etc. "]
["     Grain size layering",null,null,null,"     Sedimentary: bedding, pebbles, fossils…"]
["     Schistosity--parallel alignment of micas",null,null,null,"     Metamorphic, banding, foliation, porphyroblasts"]
["     Slaty cleavage"]
[" ",null,null,null,"Timing  of Grain Growth w/ Respect to Deformation"]
["Lineations",null,null,null,"     Pre-kinematic"]
["     Mineral (alignment of hbld, sillimanite, etc.)",null,null,null,"     Syn-kinematic"]
["     Rods",null,null,null,"     Post-kinematic"]
["     Mineral aggregates"]
[" ",null,null,null,"Cataclastic Structures"]
["Boudinage",null,null,null,"     Flaser Structure"]
[{"$nulls":4},"     Mortar Structure"]
["Mylonites",null,null,null,"     Augen structure"]
["     S-C mylonite"]
["     C-C' mylonite",null,null,null,"Recrystallization"]
["     Kinematic indicator (\"fish\". Σ, δ…)",null,null,null,"   Granoblastic--equant, straight grain boundary"]
[{"$nulls":4},"   Hornfels--recrystallized by contact metamorphism"]
["Microfolds"]
["     crenulation, isoclinal, open, polyphase….."]
[" "]
["Cataclastic Structures"]
["     Flater structure"]
["     Mortar structure"]
["     Augen structure"]
[]
["NOTES:"]
[" "]
{"$rows_empty":52}
[" "]
{"$rows_empty":9}
["Metamorphic Rock Classification"]
[]
["Foliated Rocks",null,"Unfoliated Rocks",null,"Other Metamorphic Rocks"]
["     slate",null,"     hornfels",null,"     marble"]
["     phyllite",null,"     granofels",null,"     quartzite"]
["     schist",null,"     skarn",null,"     serpentinite"]
["     gneiss",null,null,null,"     banded iron formation"]
[null,null,"Metabasites"]
["     migmatite",null,"     greenschist",null,"High Strain Rocks"]
[null,null,"     amphibolite",null,"     breccia, gouge"]
[null,null,"      blueschist",null,"     mylonite, proto-, ultra-, blasto-"]
[null,null,"      eclogite",null,"     pseudotachylite"]
[null,null,"      granulite"]
{"$rows_empty":37}
["http://pubs.usgs.gov/of/2004/1451/sltt/appendixB/appendixB.pdf"]