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Isabel Verdin

on 9 March 2015

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Transcript of Ruby

By: Isabel verdin
What layer was Ruby formed in
Ruby was formed in the mantle.
The presence of intrusive magma in an area (known as contact metamorphism), or of tectonic plate interactions on a larger scale (known as regional metamorphism) puts igneous and sedimentary rock and minerals under heat or pressure that may cause changes in their chemistry and crystal structure. The result is the creation of metamorphic rock.
how are rubies formed
The commonly held belief amongst geologists is that Rubies are formed by tectonic plates smashing together.
As did the India and Asia plates when the Himalayan mountains were formed around 50 million years ago – forcing limestone deposits deep into the earth where intense heat and pressure metamorphosed the limestone into sparkly marble. At the same time, molten granite bubbled up into the marble and removed the silica but left behind the aluminium through a process called metasomatism.
what does the rock cycle have to do with the ruby?
'Solid as a rock.' Have you heard someone say that before? Rocks have a reputation for being solid, hard, and indestructible. Rocks line river beds and jut above the landscape as mountain peaks; they are fun to collect and sometimes are very beautiful. Each rock is different - some are smooth and round, some are sharp and dangerous. They come in all colors: pink, green, orange, white, red. They are everywhere, and we take their presence for granted and assume that they are unchangeable.

But rocks are not unchangeable! Just like the water cycle, rocks undergo changes of form in a rock cycle. A metamorphic rock can become an igneous rock, or a sedimentary rock can become a metamorphic one. Unlike the water cycle, you can't see the process happening on a day-to-day basis. Rocks change very slowly under normal conditions, but sometimes catastrophic events like a volcanic eruption or a flood can speed up the process. So what are the three types of rocks, and how do they change into each other? Keep reading to find out!

how does the ruby affect the plates?
The Mogok Valley in Upper Myanmar (Burma) was for centuries the world's main source for rubies. That region has produced some of the finest rubies ever mined, but in recent years very few good rubies have been found there. The very best color in Myanmar rubies is sometimes described as "pigeon's blood." In central Myanmar, the area of Mong Hsu began producing rubies during the 1990s and rapidly became the world's main ruby mining area. The most recently found ruby deposit in Myanmar is in Namya (Namyazeik) located in the northern state of Kachin.
Rubies have historically been mined in Thailand, the Pailin and Samlout District of Cambodia, Burma, India, Afghanistan, Australia, Namibia, Colombia, Japan, Scotland, Brazil and in Pakistan. In Sri Lanka, lighter shades of rubies (often "pink sapphires") are more commonly found. After the Second World War ruby deposits were found in Tanzania, Madagascar, Vietnam, Nepal, Tajikistan, and Pakistan.
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