Rocks – Limestone

Posted: November 20th, 2009 By Aarav Under: Projects

I am in class 2 now, we had a rock project from our school to do, I went with my mumma and daddy to many places to search various kind of rocks. We had to make a rock plate of 7 rocks and a chart with a Monument made up of one rock which I had chosen in my Rock Plate Project. I took 7 rocks and Dilwara Temple for chart and project presentation. I had visited Dilwara Temple with my mumma, nani ji and nana ji last year in summer vacation. I enjoyed a lot there, that was an awesome visit. The 7 rocks I took were:

First I will start to write about Limestone:

Limestone

• Limestone is a sedimentary rock.
• It is composed of Calcium carbonate.
• Limestone is an important stone for architecture.
• Limestone is a key ingredient of cement, and concrete.
• Limestone is very reactive to acids.

1) Where it is found?

• Limestone is found throughout the world in rocks which were deposited in shallow, warm, marine water, oceans and sea.

2) What it is used for?

• Limestone is very commonly used in architecture.
• Cement
• It is added to paper, plastics, paint, tiles, and other materials as both white pigment and filler.
• It is used Toothpaste.
• Added to bread and cereals as a source of calcium

3) What does it look like?

• Limestone is commonly light colored; usually it is tan or gray.
• Limestone is found in every color.
• The color of limestone varies due to impurities such as sand, clay, iron oxides and hydroxides, and organic materials.

4) World Famous Monuments

• The Great Pyramid of Giza.- the structure is made entirely from limestone.
• Courthouse in Manhattan, Kansas