Oolitic Limestone
What is Oolitic Limestone?
Oolitic Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3). It is characterized by its granular texture, consisting of small, spherical grains called ooids. These ooids are typically less than 2 mm in diameter and are formed by the concentric precipitation of calcium carbonate around a nucleus, such as a shell fragment or a grain of sand. The rock's appearance can vary depending on the mineral composition and the presence of impurities.
Optical Properties
- Refractive Index
- 1.486 - 1.658
- Birefringence
- 0.000 - 0.000
- Pleochroism
- None
- Optical Character
- Isotropic
- Dispersion
- Low
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Quick Facts
Physical Properties
- Color
- Typically light-colored, ranging from white, cream, and tan to shades of gray and brown, depending on the impurities present.
- Hardness (Mohs)
- 3-4
- Density
- 2.40 - 2.70 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- CaCO3
- Elements
- Calcium, Carbon, Oxygen, and trace elements like Magnesium, Iron, and Silicon
Also Known As
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