What Is Chert Used for?

Answer

Chert refers to a variety of silica that contains microcrystalline quartz. It can also be defined as a siliceous rock of chalcedonic or opaline silica occurring in limestone. Chert is often reddish-brown to green but can also occur in a variety of other colours, especially white, brown, pink or black.
Q&A Related to "What Is Chert Used for?"
Concrete is made of water, aggregate and cement. The type used is typically Portland cement. The aggregate may consist of crushed rock, gravel or sand, or a combination of these substances
http://www.ehow.com/info_12160327_chertfree-concre...
Chert is composed of microcrystalline silica, and is primarily derived from the silica exoskeletons of tiny marine organisms (diatoms and radiolaria) and by precipitation from ocean
http://wiki.answers.com/Q/What_minerals_are_in_che...
( ¦bī·ō¦jen·ik ′chərt ) (petrology) Chert derived from the tests of pelagic silica-secreting organisms, particularly diatoms and radiolarians
http://www.answers.com/topic/biogenic-chert
Chert is a very hard and resistant microcrystalline variety of quartz, (rock) SiO2. It is
http://www.chacha.com/question/what-is-chert-rock
1 Additional Answer
Ask.com Answer for: what is the definition of chert
chert
[churt]
NOUN
1.
a compact rock consisting essentially of microcrystalline quartz.
Source: Dictionary.com
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