Photomicrographs - Paloma Field (5 photos)
Well: Superior Anderson 18-35
FRAME 2-18 Antelope sandstone from Paloma field (Superior Anderson 18-35, 10723'). Note partially albitized plagioclase (lower left), fresh twinned plagioclase (top right and left), and biotite flakes. Field of view 2.lmm. Crossed Nicols.
FRAME 2-19. Antelope sandstone from Paloma field (Superior Anderson 18-35, 10723'). Note partially albitized plagioclase in center. Some of original twinned plagioclase remains in top center. The mottled pore fill with low birefringence is kaolinite (right center, lower left). Field of view 1.05mm. Crossed Nicols.
FRAME 2-19. Antelope sandstone from Paloma field (Superior Anderson 18-35, 10723'). Note partially albitized plagioclase in center. Some of original twinned plagioclase remains in top center. The mottled pore fill with low birefringence is kaolinite (right center, lower left). Field of view 1.05mm. Crossed Nicols.
FRAME 2-21. Antelope sandstone from Paloma field (Superior Anderson 18-35, 11010'). Note two carbonate cements. Dolomite? is microcrystalline, iron-stained, and often associated with biotite (lower left). Calcite forms more highly birefringent rhombs. Note also twinned plagioclase in lower left. Field of view 2.lmm. Crossed Nicols.
FRAME 2.-22. Antelope sandstone from Paloma field (Superior Anderson 18-35, 11010'). Note more highly birefringent albitic fracture fills in plagioclase grain (left center) and two carbonates. Dolomite? forms microcrystalline, iron-stained aggregates at right and bottom margins. Rhombic calcite cement appears in right center and left margin of photo. Field of view 1.05mm. Crossed Nicols.
