Aloda

Calcite veins occur in all shale beds and limestone in the fracture.

The mineral calcite is the main mineral in limestone (CaCO3). And calcite shows with twining and cleavage to identify which polarizer has been rotated through 90° (MacKenzie et al., 2017).
PPL (Plane Polarised light = out)
XPL (Cross Polarised light = In)

MacKenzie, W. S., Adams, A. E., & Brodie, K. H. (2017). Rocks and minerals in thin section: A colors atlas. CRC Press.

is dominant in carbonate units of the Mesozoic and Cenozoic ages (Ronov et al., 1980). And limestone is included in carbonate group and the common carbonate minerals fall into three main groups, the calcite group, the dolomite group, and the aragonite group. And Only calcite, dolomite, and aragonite are volumetrically major minerals in limestones. However, one-fifth to one-quarter of all sedimentary rocks in the stratigraphic record are carbonate rocks.

The fossil Ooids contain in the limestone and for the pore of fossil that contain of plagioclase feldspar and quartz.
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HOW MANY TYPES OF ROCK?
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