Rubies and sapphires are colored varieties of a mineral named corundum. It takes many minerals to make something as simple as a wooden pencil. The "lead" is made from graphite and clay minerals, the brass band i
The name "ruby" is used for red to slightly purplish red specimens of the mineral corundum; the name "amethyst" is used for purple specimens of the mineral quartz; and, the name "emerald" is used for green specimens of the mineral beryl. Each of these minerals occurs in a wide range ...
Ask a question Search AnswersLearn more about this topic: Beryllium Lesson for Kids: Discovery, Facts & Everyday Uses from Chapter 6 / Lesson 2 1.6K The element beryllium is used to make many things - including some you probably have near you right now! Read this lesson to find out...
Sapphires are all types of corundum with trace element impurities responsible for their various colors. Corundum is separated simply by their color, all red corundum are rubies (this can cause a few arguments over where a light red ruby becomes a pink sapphire) and all other colors are sapphire...
(bottom). The reddish colors are likely areas with gold mineralization. Red colors indicate intense alteration of the rocks and the presence of minerals such as alunite and kaolinite. Green areas are related to alteration, but at lower temperatures and pressures. Blue areas are unaltered volcanic...
Citrus fruits and their products are rich in minerals and dietary fibre, essential for overall human nutritional well-being. They also contain several other phytochemicals that serve as nutraceuticals, such as flavonoids, limonoids, phenolics, antioxidants, and carotenoids (lycopene and β-carotene) [...
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jaramillo explains. so once a food that has some eye-catching nutrition stats gets a good ad campaign and enough momentum behind it, boom .“if we can notice a large quantity of vitamins and minerals in the nutrient label…that food has a good chance of becoming a superfood,” jaramillo ...
However, together, tin and lead make a very tough and strong alloy which is called pewter. Only a few metals occur naturally in their pure state. Most metals are locked up within minerals and rocks known as ores. Metals are extracted from their ores by heating the ores or by passing an...
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