Sylvite, also called sylvinite when impure, is potassium chloride (KCl) in natural mineral form. It is colorless to white with shades of yellow and red due to inclusions, has a hardness of around 2.5 on Mohs’ Scale and has a distinctively bitter salty taste. Sylvite is a chemical sedimentary rock, laid down through the evaporation [...]
Tag Archives: Rock/fossil of the month
February – Woolly Mammoth Tooth.
Mammoth lived on most of the continents in the Northern Hemisphere during the last big ice age 70-10,000 years ago. Woolly Mammoths were about the same size as Indian elephants are today and covered in a layer of coarse hair. They are a good indicator of a cold climate and tundra or Steppe [...]
on February 3, 2009 Leave a comment
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Boulby – Cowbar Hummersea Loftus [...]