Jasper                         Mineral Group: SILICATES
RocksForKids.com

 
Jasper is an opaque form of quartz with fine grains known as chalcedony. Chalcedony is also known as cryptocrystalline quartz.

Jasper is easily identified by its red, yellow and brown colours. Because it is a quartz, it takes a fine polish and often stands out as a smoothly tumbled pebble in streams.


Banded Jasper   Lake Superior, Ontario, CANADA

The bright red of jasper makes it easy to identify. This specimen is dramatically layered. It has 2 flat, cut surfaces with a slight polish. 


Jasper Nodule   PANAMA

This creamy yellow-orange, hard jasper nodule shows its waxy luster in areas where the rough “skin” has been broken off. It is translucent when sliced thin but opaque when in a large chunk.

This smooth, blocky, opaque beach pebble has reddish brown jasper sandwiched between layers of other rocks.


Jasper Nodule    Nova Scotia, CANADA


Banded Iron
Jasper banded with Magnetite
Temagami, Ontario, CANADA

When jasper has patterns made by the different colours, it is often given a fanciful name. The name often times described what the pattern looks like and is representative of the kind of jasper found in a certain location.


Wild Horse Jasper
Owyhee Mountains near the Idaho/ Oregon, USA
 
Wild Horse Picture Jasper - polished free form cab
Owyhee Mountains near the Idaho/ Oregon, USA

 

 

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