What is present in limestone?

Limestone is a sedimentary rock made of calcium carbonate (CaCO₃), usually in the form of calcite or aragonite. It may contain considerable amounts of magnesium carbonate (dolomite) as well. However, minor constituents of clay, iron carbonate, feldspar, pyrite, and quartz is also commonly present.

1. What contains in limestone?
2. Which metal is present in limestone?
3. What gems can be found in limestone?
4. How is limestone made in nature?
5. What Colour is limestone?
6. Where is limestone found in India?
7. Can gold be found in limestone?
8. What is calcite in limestone?
9. Where is limestone found?
10. Can diamonds form in limestone?
11. How does calcite form in limestone?
12. What products are made from limestone?
13. Which ions form limestone?
14. Can limestone be green?
15. Can limestone Be Blue?
16. How did limestone get its name?

What contains in limestone?

Limestone is a sedimentary rock composed principally of calcium carbonate (calcite) or the double carbonate of calcium and magnesium (dolomite). It is commonly composed of tiny fossils, shell fragments and other fossilized debris.

Which metal is present in limestone?

The important constituent of limestone is calcium (Ca). (c) Metal which exists in liquid state at room temperature is mercury (Hg) So the increasing order of their reactivity Mercury < Calcium < Sodium or Hg < Ca < Na.

What gems can be found in limestone?

Corundum, sapphire, and ruby are found in gneiss, granite, mica slate, chlorite slate, dolomite, or granular limestone.

How is limestone made in nature?

Limestone is formed in two ways. It can be formed with the help of living organisms and by evaporation. Ocean-dwelling organisms such as oysters, clams, mussels and coral use calcium carbonate (CaCO3) found in seawater to create their shells and bones. ... The water pressure compacts the sediment, creating limestone.

What Colour is limestone?

Fossils are also common in limestone. Limestone is commonly white to gray in color. Limestone that is unusually rich in organic matter can be almost black in color, while traces of iron or manganese can give limestone an off-white to yellow to red color.

Where is limestone found in India?

Rajasthan was the leading producing state accounting for (21%) of the total production of limestone, followed by Madhya Pradesh & Andhra Pradesh (11% each), Chhattisgarh & Karnataka (10% each), Gujarat,Tamil Nadu & Telangana (8% each), Maharashtra & Himachal Pradesh (4% each), and the remaining 5% was contributed by ...

Can gold be found in limestone?

Gold is one of the most economically important metals produced. ... In a few areas gold occurs in higher-grade replacement deposits in limestone (Status of Mineral Resource Information for the Fort Belknap Indian Reservation, Montana ( This site may be offline. ) ).

What is calcite in limestone?

Calcite is a form of calcium carbonate, a type of calcium salt oxide with three atoms of oxygen bonded to one atom of calcium. Calcite binds with other compounds to create limestone which is used in construction. Limestone's mineral composition makes it useful for many different functions.

Where is limestone found?

Limestone-Forming Environments

Most of them are found in shallow parts of the ocean between 30 degrees north latitude and 30 degrees south latitude. Limestone is forming in the Caribbean Sea, Indian Ocean, Persian Gulf, Gulf of Mexico, around Pacific Ocean islands, and within the Indonesian archipelago.

Can diamonds form in limestone?

Diamond from lime and iron

These carbonate melts, among other things, form when limestones enter the Earth's mantle. This occurs as a result of subduction, when old oceanic crust plunges down below an adjoining crustal plate.

How does calcite form in limestone?

Calcite as Limestone and Marble

It forms from both the chemical precipitation of calcium carbonate and the transformation of shell, coral, fecal and algal debris into calcite during diagenesis. Limestone also forms as a deposit in caves from the precipitation of calcium carbonate.

What products are made from limestone?

Some of the many products made using limestone are shown in this photograph: breakfast cereal, paint, calcium supplement pills, a marble tabletop, antacid tablets, high-quality paper, white roofing granules, and portland cement.

Which ions form limestone?

Marine limestone forms because seawater has high concentrations of two key dissolved chemicals—calcium (Ca++) and bicar- bonate (HCO3 –) ions. In the near-surface layer of most oceans, corals, clams, and Earth's surface.

Can limestone be green?

When free from impurities limestones are white, but they generally contain small quantities of other minerals than calcite which affect their colour. ... Red limestones usually contain haematite; in green limestones there may be glauconite or chlorite.

Can limestone Be Blue?

“Blue” limestone is a building rock, with different geological ages, typically used in several countries, like Portugal, Belgium, China, Ireland and Vietnam. The name is derived from the blueish dark-grey colour associated with the presence of organic matter.

How did limestone get its name?

limestone (n.)

late 14c., from lime (n. 1) + stone (n.). So called because it yields lime when burnt.