Fly Ash Scroll | Petrographic Atlas | SIU

Home
Southern Illinois University

CONTACT

SIU.EDU

Crelling's Petrographic Atlas of Coals and Carbons

College of Science

Scroll

Frame ID: FA1

fa1

Frame ID: FA1

Sample ID: C1 III DC5/+100 (slide 312-10)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke, with small amounts of inertinite, from combustion of high volatile bituminous Eastern Kentucky coal. 

Frame ID: FA10

fa10

Frame ID: FA10

Sample ID: 91978 (slide 288-14)

Magnification:  330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Anisotropic coke

Anisotropic coke from a power plant burning high volatile A Central Appalachian coal.  This carbon may be from petroleum coke.

Frame ID: FA11

fa11

Frame ID: FA11

Sample ID: 3-8 +100 (slide 290-22)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Anisotropic coke

Anisotropic coke from the combustion of high volatile A bituminous Central Appalachian coal.

Frame ID: FA12

fa12

Frame ID: FA12

Sample ID: 91992

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Anisotropic coke

Anisotropic coke (through middle of frame) from power plant burning a blend of high volatile bituminous Illinois Basin coals.

Frame ID: FA13/FA14

fa13/14

Frame ID: FA13/FA14

Sample ID: 92053 (slide 314-29)

Magnification: 330 microns on ling axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer:  FA13 - out, FA-14 - in

Retarder Plate:  FA13 - out, FA-14 - in

Filter:

Important Features: Anisotropic coke

Variety of textures of anisotropic coke from power plant burning a blend of Illinois Basin coals.

Frame ID: FA15

fa15

Frame ID: FA15

Sample ID: slide 325-28

Magnification: 330 microns on ling axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Anisotropic coke

Anisotropic coke from bottom ash from combustion of Central Appalachian high volatile A bituminous coal.

Frame ID: FA 16/FA17

fa16/17

Frame ID: FA16/FA17

Sample ID: HMPL 4/26 left (slides 332-9, 332-10)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer:  FA16 - out, FA-17 - in

Retarder Plate: FA16 - out, FA-17 - in

Filter:

Important Features: Anisotropic coke

Variety of textures of anisotropic coke from power plant burning a blend high volatile bituminous of Illinois Basin coals. The sample is from a split of 92053 (FA13 and FA14).  FA12 is from a later collection at the same power plant.

Frame ID: FA18/FA19

fa18/19

Frame ID: FA18/FA19

Sample ID: HMPL 4/27 center (slides 333-21, 333-22)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32 x oil

Polarizer: In

Analyzer: FA18 - out, FA-19 - in

Retarder Plate:  FA18 - out, FA-19 - in

Filter:

Important Features: Anisotropic coke

Variety of textures of anisotropic coke from power plant burning a blend high volatile bituminous of Illinois Basin coals. The sample is from a split of 92053 (FA13 and FA14, FA16 and FA17).  FA12 is from a later collection at the same power plant.

Frame ID: FA2

fa2

Frame ID: FA2

Sample ID: 92214 (slide 314-14)

Magnification:  330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke from combustion of high volatile Illinois Basin coal.

Frame ID: FA20

fa20

Frame ID: FA20

Sample ID: slide 341-14

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Anisotropic coke

Petroleum coke from a power plant burning Powder River Basin subbituminous coal with the addition of petroleum coke.

Frame ID: FA21

fa21

Frame ID: FA21

Sample ID: slide 351-37

Magnification:   200 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Anisotropic coke

Variety of textures in anisotropic coke.

Frame ID: FA22

fa22

Frame ID: FA22

Sample ID: 91933 (slide 303-15)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from power plant burning high volatile A bituminous southeastern Kentucky coal.

Frame ID: FA23

fa23

Frame ID: FA23

Sample ID: slide 312-36

Magnification:  330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite, with minor isotropic coke, from power plant burning high volatile b and A bituminous Eastern Kentucky coal.

Frame ID: FA24

fa24

Frame ID: FA24

Sample ID: 92289 (slide 331-30)

Magnification: 330 microns on ong axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous Eastern Kentucky coal.

Frame ID: FA25

fa25

Frame ID: FA25

Sample ID: slide 347-31

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Variety of inertinite forms from power plant burning high volatile A bituminous Central Appalachian coal.

Frame ID: FA26

fa26

Frame ID: FA26

Sample ID: 92412 (slide 371-1)

Magnification: 330 microns on long axis)

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from a power plant burning a high volatile A to low volatile bituminous Northern Appalachian coal blend.

Frame ID: FA27

fa27

Frame ID: FA27

Sample ID: slide 384-21

Magnification: 270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Inertinite

Inertinite (top and bottom) with anisotropic coke connecting the two forms.

Frame ID: FA28

fa28

Frame ID: FA28

Sample ID: PR2-20 (slide 385-6)

Magnification: 270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous central Eastern Kentucky coal.  Note incipient breakdown of inertinite cell walls.

Frame ID: FA29

fa29

Frame ID: FA29

Sample ID: LS-2 (slide 396-2)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous central Eastern Kentucky coal.  Note incipient breakdown of inertinite cell walls.

Frame ID: FA3

fa3

Frame ID: FA3

Sample ID: slide 334-35

Magnification:  330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke surrounding glass spheres.  From combustion of Appalachian coal.

Frame ID: FA30

fa30

Frame ID: FA30

Sample ID: LS-2 (slide 396-6)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous central Eastern Kentucky coal.  

Frame ID: FA31

fa31

Frame ID: FA31

Sample ID: LS-2 (slide 396-8)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous central Eastern Kentucky coal.  Note incipient breakdown of inertinite cell walls.

Frame ID: FA32

fa32

Frame ID: FA32

Sample ID: DD-4 (slide 397-13)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Inertinite

Inertinite from a power plant burning high volatile A bituminous central Eastern Kentucky coal.  Note incipient breakdown of inertinite cell walls.

Frame ID: FA33

fa33

Frame ID: FA33

Sample ID: slide 290-4

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Inertinite (center) with vitrinite-derived isotropic coke from power plant burning high volatile B and A bituminous Eastern Kentucky coal.

Frame ID: FA34

fa34

Frame ID: FA34

Sample ID: slide 290-7

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Mixed field

Anisotropic coke with isotropic coke (along upper right boundary of particle) from power plant burning high volatile B and A bituminous Eastern Kentucky coal.

Frame ID: FA35

fa35

Frame ID: FA35

Sample ID: 91938 (slide 303-31)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Inertinite/partially combusted coal (top) with isotropic coke from power plant burning high volatile A bituminous Eastern Kentucky coal.

Frame ID: FA36

fa36

Frame ID: FA36

Sample ID: 92051 (slide 320-35)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Mixed field

Anisotropic coke to left and right of inertinite.  From power plant burning high volatile A bituminous Eastern Kentucky coal.

Frame ID: FA37

fa37

Frame ID: FA37

Sample ID: slide 322-25

Magnification:   330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Inertinite (lower left), anisotropic coke (upper center), and isotropic coke (center right) from power plant burning bituminous Appalachian coal.

Frame ID: FA38

fa38

Frame ID: FA38

Sample ID: 92289 (slide 332-2)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Isotropic coke (top) with inertinite from power plant burning high volatile A bituminous Central Appalachian coal.

Frame ID: FA39

fa39

Frame ID: FA39

Sample ID: slide 360-19

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Inertinite with anisotropic coke from power plant burning South African bituminous coal.

Frame ID: FA4

fa4

Frame ID: FA4

Sample ID:   46004 (slide 375-33)

Magnification: 270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke surrounding glass spheres.

Frame ID: FA40

fa40

Frame ID: FA40

Sample ID:   92421 (slide 369-20)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mixed field

Inertinite with minor coke from power plant burning a high volatile A to low volatile bituminous Northern Appalachian coal blend.

Frame ID: FA41

fa41

Frame ID: FA41

Sample ID: PR-2-13 (slide 387-7)

Magnification: 270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: In

Retarder Plate: In

Filter:

Important Features: Mixed field

Inertinite (bottom) with anisotropic coke from combustion of high volatile A bituminous central Eastern Kentucky coal.

Frame ID: FA42

fa42

Frame ID: FA42

Sample ID: slide 288-26

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Partially burned coal

Partially burned coal (center), with isotropic coke particles to left and right, from combustion of high volatile A and B Eastern Kentucky coal.

Frame ID: FA43

fa43

Frame ID: FA43

Sample ID: 91908 (slide 303-5)

Magnification:   330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Partially burned coal

Partially burned vitrinite (right center) showing devolatilization features.  Note lower reflectance than surrounding coke particles.

Frame ID: FA44

fa44

Frame ID: FA44

Sample ID: slide 325-19

Magnification:   330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Partially burned coal

Partially burned coal with devolatilization features and remnant liptinite.

Frame ID: FA45

fa45

Frame ID: FA45

Sample ID: slide 351-33

Magnification:   330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Partially burned coal

Partially burned coal with devolatilization features, remnant liptinite, and oxidation rims along particle edges and along fractures.

Frame ID: FA46

fa46

Frame ID: FA46

Sample ID:   92019 (slide 387-22)

Magnification: 270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Partially burned coal

Partially burned coal from the combustion of high volatile C/B bituminous Illinois Basin coal.

Frame ID: FA47

fa47

Frame ID: FA47

Sample ID:   92584/100x200 (slide 406-23)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Partially burned coal

Partially burned vitrinite from the combustion of high volatile bituminous western US coal.

Frame ID: FA48-FA52

fa48-52

Frame ID: FA 48 to FA-52

Sample ID: slides 282-1, -5, -10, -13, -19

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: glass

Slides emphasizing glass in a series of size fractions at >100, 100 x 200, 200 x 325, 325 x 500, and <500 mesh (>150 μm, 150 x 75 μm, 75 x 38 μm, 38 x 25 μm, <25 μm), respectively.        

Frame ID: FA5

fa5

Frame ID: FA5

Sample ID: 92537 (slide 378-11

Magnification:  270 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke, with inertinite at bottom of frame, from combustion of high volatile A bituminous central Eastern Kentucky coal.

Frame ID: FA53

fa53

Frame ID: FA 53

Sample ID: 91981(slide 320-15)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: glass

Large solid glass spheres, probably containing included sub-micron crystals.  From a power plant burning high-sulfur, high volatile bituminous Western Kentucky coal. 

Frame ID: FA54

fa54

Frame ID: FA 54

Sample ID: 92271 (slide 323-25)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: glass cenosphere

Glass cenosphere (upper left).  Cenospheres are hollow glassy spheres.  From South Carolina power plant burning Eastern Kentucky low-sulfur, high volatile A bituminous coal.

Frame ID: FA55

fa55

Frame ID: FA 55

Sample ID: 92293 (slide 334-33)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Glassy edge of particle

Vitrified outer boundary of particle.  The interior has been thermally altered, note high reflectance carbons.  From Tennessee power plant burning medium-sulfur, high volatile A bituminous Central Appalachian coal.

Frame ID: FA56

fa56

Frame ID: FA 56

Sample ID: 92235 (slide 372-2)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Glass spheres

Chambered glass spheres from Kentucky power plant burning low-sulfur, high volatile A bituminous Central Appalachian coal.

Frame ID: FA57

fa57

Frame ID: FA 57

Sample ID: 92537 (slide 378-21)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features:  Glassy edge of particle

Vitrified outer boundary of particle.  The interior has been thermally altered, note high reflectance carbons.  From Kentucky power plant burning medium-sulfur, high volatile A bituminous Eastern Kentucky coal.

Frame ID: FA58

fa58

Frame ID: FA 58

Sample ID: 92371 (slide 386-13)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Large glass sphere

Portion of wall of large glassy sphere.  Note spinel (to be illustrated in slides ) included in glass.  Unspecified coal source.

Frame ID: FA59

fa59

Frame ID: FA 59

Sample ID: 92375 (slide 387-5)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Chambered glass sphere

Chambered glass sphere.  Unspecified coal source.

Frame ID: FA6

fa6

Frame ID: FA6

Sample ID: 92587/+100 (slide 403-2)

Magnification: 200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke from the combustion of high volatile B bituminous western US coal.

Frame ID: FA60

fa60

Frame ID: FA 60

Sample ID: slide 397-37

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: glass sphere

Glass sphere with inclusions.  From power plant burning blend of high-sulfur high volatile bituminous Pennsylvanian coal and low-sulfur high volatile B bituminous Tertiary coal.

Frame ID: FA61

fa61

Frame ID: FA 61

Sample ID: slide 407-20

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Glass with included crystals

Glass with unidentified crystals, possibly mullite, from power plant burning Powder River Basin low-sulfur subbituminous coal.

Frame ID: FA62

fa62

Frame ID: FA 62

Sample ID: 92571 (slide 412-1)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Glass with included crystals

Glass with included crystals, possibly mullite, from power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.

Frame ID: FA63

fa63

Frame ID: FA 63

Sample ID: 92305 (slide 342-5)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Quartz

Quartz with unidentified, high-relief crystal.  From Tennessee power plant burning medium-sulfur, high volatile A bituminous Central Appalachian coal.

Frame ID: FA64

fa64

Frame ID: FA 64

Sample ID: 92007 (slide 385-25)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Quartz

Quartz from power plant burning Eastern Kentucky high volatile bituminous coal.

Frame ID: FA65

fa65

Frame ID: FA 65

Sample ID: slide 397-36

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Quartz

Quartz.  From power plant burning blend of high-sulfur high volatile bituminous Pennsylvanian coal and low-sulfur high volatile B bituminous Tertiary coal.

Frame ID: FA66

fa66

Frame ID: FA 66

Sample ID: 92033 (slide 320-25)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mullite

Mullite blades (dark brown) in glass and spinel matrix.  From power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.

Frame ID: FA67

fa67

Frame ID: FA 67

Sample ID: 92033 (slide 387-31)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mullite

Mullite in glass.  From power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.

Frame ID: FA68

fa68

Frame ID: FA 68

Sample ID: 91964 (slide 387-36)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mullite

Mullite blades in glass with microcrystalline spinel.  From power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.

Frame ID: FA69

fa69

Frame ID: FA 69

Sample ID: slide 388-16

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mullite

Mullite from bottom ash from power plant burning high volatile bituminous Central Appalachian coal.

Frame ID: FA7

fa7

Frame ID: FA7

Sample ID: 92584/+30 (slide 406-22)

Magnification:  200 microns on long axis

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Isotropic coke

Isotropic coke from the combustion of high volatile B bituminous western US coal.

Frame ID: FA70

fa70

Frame ID: FA 70

Sample ID: 92506 (slide 389-10)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Mullite

Mullite in glass with spinel from power plant burning high-sulfur, high volatile C bituminous Western Kentucky coal.

Frame ID: FA71

fa71

Frame ID: FA 71

Sample ID: slide 284-33

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel.  Three spinel-rich spheres showing contrasting textures.  Interstitial space within spinel-rich spheres is generally glass.  From power plant burning low- to medium-sulfur, high volatile bituminous Central Appalachian coal.

Frame ID: FA72

fa72

Frame ID: FA 72

Sample ID: 92103 (slide 285-36)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Fine spinel dendrites in glass.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA73

fa73

Frame ID: FA 73

Sample ID: 92140 (slide 290-11)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Coarse spinel crystals in glass.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA74

fa74

Frame ID: FA 74

Sample ID: 92176 (slide 290-27)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel in glass with included mullite.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA75

fa75

Frame ID: FA 75

Sample ID: 92135 (slide 285-18)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Two spinel-rich spheres showing contrasts in crystal textures.  Fly ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA76

fa76

Frame ID: FA 76

Sample ID: 92054 (slide 316-6)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA77

fa77

Frame ID: FA 77

Sample ID: 92054 (slide 316-7)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Coarse spinel with finer spinel dendrites in glass.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA78

fa78

Frame ID: FA 78

Sample ID: 92029 (slide 319-28)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel sphere with included spinel and glass spheres.  Power plant burning medium-sulfur, high volatile A bituminous Eastern Kentucky coal. 

Frame ID: FA79

fa79

Frame ID: FA 79

Sample ID: slide 332-12

Magnification: 190 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel from power plant burning high-sulfur, high volatile C bituminous Illinois Basin coal.

Frame ID: FA8/FA9

fa8/9

Frame ID: FA8/FA9

Sample ID: 91972 (slides 287-35, 287-36)

Magnification: 330 microns on long axis

Illuminator: Vertical

Objective: 32x oil

Polarizer: In

Analyzer: FA8 - out, FA-9 - in

Retarder Plate: FA8 - out, FA9 - in

Filter:

Important Features: Anisotropic coke

Anisotropic coke from a power plant burning high volatile A Central Appalachian coal.  This carbon may be from petroleum coke.

Frame ID: FA80

fa80

Frame ID: FA 80

Sample ID: 92306 (337-19)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Layered spinels from power plant burning medium-sulfur, high volatile A bituminous Central Appalachian coal.

Frame ID: FA81

fa81

Frame ID: FA 81

Sample ID: slide 346-26

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Fine spinel dendrites in glass.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA82

fa82

Frame ID: FA 82

Sample ID: slide 346-31

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Web-like spinel dendrites in glass.  Bottom ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA83

fa83

Frame ID: FA 83

Sample ID: 92317 (slide 348-27)

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Multiple spinel spheres in 200 x 325 mesh size fraction of fly ash from power plant burning high-sulfur, high volatile C Illinois Basin coal.

Frame ID: FA84

fa84

Frame ID: FA 84

Sample ID: slide 363-16

Magnification: 330 microns on long side

Illuminator: Vertical

Objective: 32x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel from Israeli-produced fly ash from a mixed blend of coals.

Frame ID: FA85

fa85

Frame ID: FA 85

Sample ID: slide 385-1

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Row of five spinel spheres showing contrasts in texture.

Frame ID: FA86

fa86

Frame ID: FA 86

Sample ID: 92032 (slide 386-1)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel sphere with internal contrast in texture.  Fly ash from power plant burning high-sulfur, high volatile C Western Kentucky coal.

Frame ID: FA87

fa87

Frame ID: FA 87

Sample ID: 92075 (slide 387-16)

Magnification: 300 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel texture.  Fly ash from power plant burning high-sulfur, high volatile C Western Kentucky coal. 

Frame ID: FA88

fa88

Frame ID: FA 88

Sample ID: slide 388-9

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel in glass from bottom ash from power plant burning high volatile bituminous Central Appalachian coal. 

Frame ID: FA89

fa89

Frame ID: FA 89

Sample ID: 91950 (slide 388-25)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel sphere with contrasting textures.  Fly ash from power plant burning high-sulfur, high volatile C Western Kentucky coal. 

Frame ID: FA90

fa90

Frame ID: FA 90

Sample ID: 92506 (slide 389-6)

Magnification: 270 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Fine spinel dendrites in glass. 

Frame ID: FA91

fa91

Frame ID: FA 91

Sample ID: 92591 (slide 397-20)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel spheres flanking highly-reflecting metal shard.  Fly ash from power plant burning low-sulfur, high volatile B bituminous western US coal.

Frame ID: FA92

fa92

Frame ID: FA 92

Sample ID: 92587 (slide 402-34)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Contrasting spinel textures.  Fly ash from power plant burning low-sulfur, high volatile B bituminous western US coal.

Frame ID: FA93

fa93

Frame ID: FA 93

Sample ID: 92584 (slide 406-19)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel.  Fly ash from power plant burning low-sulfur, high volatile B bituminous western US coal.

Frame ID: FA94

fa94

Frame ID: FA 94

Sample ID: 92574 (slide 412-24)

Magnification: 200 microns on long side

Illuminator: Vertical

Objective: 50x oil

Polarizer: Out

Analyzer: Out

Retarder Plate: Out

Filter:

Important Features: Spinel

Spinel.  Fly ash from power plant burning high-sulfur, high volatile bituminous Western Kentucky coal.