Photomicrographs - Paloma Field (9 photos)
Well: Benco 36-28
FRAME 2-23. Antelope sandstone from Paloma field (Benco 36-28, 11157'). Note abundant potassim feldspar (yellow stain, center and bottom center), twinned plagioclase (lower left and center), highly birefringent biotite, and volcanic rock fragment in upper left (stained for potassium). Calcite cement appears at right. Field of view 2.lmm. Crossed Nicols.
FRAME 2-24. Same field of view as frame 2-23. Note yellow-stained potassium feldspar and volcanic rock fragment. Note primary porosity (blue epoxy). Field of view 2.lmm. Plane light.
FRAME 2-25. Antelope sandstone from Paloma field (Benco 36-28, 10945'). Note carbonate rhombs growing within biotite cleavage flakes (green). Field of view 0.55mm.
Plane light.
FRAME 2-26. Same field of view as frame 2-25. Note highly birefringent carbonate rhombs growing within biotite cleavage flakes of lower order interference colors., Field of view 0.55mm. Crossed Nicols.
FRAME 2-27. Antelope sandstone from Paloma field (Benco 36-28, 10945'). Note highly birefringent carbonate rhombs growing within biotite cleavage flakes of lower order interference colors. Field of view 0.55mm. Crossed -Nicols.
FRAME 2-28. Same field of view as frame 2-27. Note high relief carbonate rhombs and yellow-green biotite cleavage flakes. Note primary porosity (blue epoxy). Field of view 0.55mm. Plane light.
FRAME 2-29. Antelope sandstone from Paloma field (Benco 36-28, 10791'). Note microcrystalline iron stained carbonate (dolomite or siderite) zones at upper left, lower left, and right. Field of view 1.05mm. Crossed Nicols.
FRAME 2-30. Antelope sandstone from Paloma field (Benco 36-28, 10791'). Note microcrystalline iron-stained carbonate (dolomite or siderite) in lower left and right and top center. This carbonate is often associated with biotite, as shown in top center. Field of view 1.05mm. Crossed Nicols.
FRAME 2-31. Same field of view as frame 2-30. Note carbonate (yellow-brown iron stain), including where growing amongst green biotite flakes in top center. Field of view 1.05mm. Plane light.
