Collecting Rocks and Minerals

Written by Gayle Olson


Continued from page 1

Minerals also form other shapes which are not crystals. The mineral smithsonite forms rounded crusts on rocks and minerals. Pyrite may form smoothly rounded lumps called nodules.

If you find a mineral with perfectly flat surfaces, it is likely a crystal. Some minerals break cleanly when hit, leaving pieces with smooth surfaces that look like crystals.

These clean breaks are called "cleavages". Each mineral tends to break or cleave more easily in some directions than in others. The way it breaks is called its cleavage pattern. Often you can identify minerals by a combination of their crystal shape and their cleavage pattern.

Related Internet resources:

http:/ oyscollectibles.allinfo-about.com/features/minerals.html



Author and Internet Content Developer since 1995.


Museum Collections

Written by Gayle Olson


Continued from page 1

It wasn't untilrepparttar 19th century that buildings were specifically designed as museums. Before that time, churches, monasteries, palaces, or state buildings that no longer served as their original purpose were used as museums. One ofrepparttar 116347 first buildings in Europe planned as a museum wasrepparttar 116348 Altes (OLD) Museum in Berlin, Germany. It was built in 1830.

The first children's museum was organized byrepparttar 116349 Brooklyn Museum in New York in 1899. Today hundreds of museums designed especially for children can be found all aroundrepparttar 116350 world. Many have programs where children can make their own models and crafts, touch artifacts or dinosaur bones.

Some museums are devoted especially to hobbies and collectibles. All overrepparttar 116351 world hobbyists share their treasures and collections. The Internet is a convenient way to travelrepparttar 116352 world and visit these special collections from acrossrepparttar 116353 globe.

Related Internet Resources:

http:/ oyscollectibles.allinfo-about.com/features/museum1.html

Author and Internet Content Developer since 1995.


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