Phyllite is a very common metamorphic rock, found in many parts of the world. It forms when sedimentary rocks are buried and mildly altered by the heat and directed pressure of regional metamorphism.
Mount Etna is the highest and most active volcano in Europe. Towering above the city of Catania on the island of Sicily, it has been growing for about 500,000 years and is in the midst of a series of
Blue is the most popular topaz color in today's jewelry marketplace. It is sold in a broad range of blue colors, starting from a pale blue with a light tone and saturation, all the way to a deep blue
Google Earth is a free program from Google that allows you to explore satellite images showing the cities and landscapes of Vietnam and all of Asia in fantastic detail. It works on your desktop comput
Fluorite has a wide variety of uses. The primary uses are in the metallurgical, ceramics, and chemical industries; however, optical, lapidary, and other uses are also important. Fluorspar, the name us