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Line 136:
Line 136: − + − ! Fluorescence Color − + − + − − + − − − + − − − + − − + − − + − − + − − + − + − − | Pipe dope+ − | Bright blue − |- − − + +
→Fluorescence
|+ {{table number|2}}Fluorescence of common minerals and artificial materials
|+ {{table number|2}}Fluorescence of common minerals and artificial materials
|-
|-
! Mineral or Material
! Mineral or Material || Fluorescence Color
|-
|-
| ''' Minerals'''
| colspan = 2 align = center | ''' Minerals'''<sup>a</sup>
|-
|-
| Dolomite, magnesian limestones
| Dolomite, magnesian limestones || Yellow, yellowish brown to dark brown
| Yellow, yellowish brown to dark brown
|-
|-
| Aragonite and calcareous mudstones
| Aragonite and calcareous mudstones || Yellow-white to pale brown
|
|-
|-
|
| Chalky limestones || Purple
| Yellow-white to pale brown
|-
|-
| Chalky limestones
| Foliated shales || Tan to grayish brown
| Purple
|-
|-
| Foliated shales
| Anhydrite || Blue to mid-gray
| Tan to grayish brown
|-
|-
| Anhydrite
| Pyrite || Mustard yellow to greenish brown
| Blue to mid-gray
|-
|-
| Pyrite
| colspan = 2 align = center | ''' Artificial Materials '''
| Mustard yellow to greenish brown
|-
|-
| ''' Artificial Materials '''
| Diesel fuel || Dull brown
|-
|-
| Diesel fuel
| Pipe dope || Bright blue
| Dull brown
|-
|-
| Oil-based mud<sup>b</sup> || Varies
| Oil-based mud
| Varies
|}
|}
:<sup>a</sup><sub>Modified from Exploration Logging, Inc.</Sub>
:<sup>b</sup><sub>Samples of oil-based mud and other petroleum products used around the wellsite should be routinely sampled and examined under UV light to avoid potential confusion with hydrocarbon shows from the rocks.
===Cut fluorescence===
===Cut fluorescence===