Explanation
jasper rock is mainly composed of chalcedony and authigenic quartze, often containing iron oxide, organic matter and other mixed substances, so it has various colors. The jasper rock is mostly of cryptocrystalline structure, and the rock is dense and hard, with shell shaped fracture. It is mostly distributed in geosyncline area, often associated with volcanic rock, and is in a very thick layer (hundreds of meters above), called jasper rock formation. Dense and hard siliceous rock. It is mainly composed of chalcedony and authigenic quartze, mixed with iron oxide and organic matter, so it is often red, brown, green, rose, etc. Those with beautiful colors can be used as gems.
Classification
Natural materials and products -> Mineral materials