My sand-world in a overview

What is sand?

Sand is a number of smaller and looser mineral corns which are mainly of quartz. But it can also comprise feldspar and mica. The beginning of sand is mostly from vulcanic origin. During the process developed rock will be called granite. This rock was splited, rubed off and transported caused of weathering. If extent of the stones between 0.00248 and 0.0787 inch (0,063 to 2 mm) then stones will be called sand. The scientific classification is coarse-sand 0.0248-0.0787 inch (0,63-2 mm), middle-sand 0.00787-0.0248 inch (0,2-0,63 mm) and fine-sand 0.00248-0.00787 inch (0,063-0,2 mm). Corns bigger than 0.0787 inch (2 mm) will be called pebble and smaller than 0.00248 inch (0,063 mm) silt.
Sand can you find at coasts, in the sea, in deserts, in buildings, in glass and ...
Sand has also different colors, like yellow, black, white and red.

Why collecting sand?

Any things collect almost everybody. The fascination at sand collection  is the not ordinary of the thing. Additionaly you have a cost-effective vacation souvenir in your field of vision. Many people don´t know such collections. At last time, ask me a visitor (in my flat) "What are this for spices?"
My collection started in the year 1985. At a holiday in the near of Prerow (Mecklenburg [Germany] / Baltic Sea). At this place is me conspicuoused that the sand here is more fine and brighter than the sand from the Black Sea ( I spended here my holiday two years ago). To check my discovery, I had taken some sand with me. Two years later I was once more in Bulgaria at the Black Sea. From this point I had taken sand, too. At home came the sand in film boxes or little jam glasses. So began a collection, which is now bigger with help from parents and friends.