unusual rock found while prospecting wisconsin creek

[mattfink]

we find these rocks all the time and I was wondering if anyone could id them.View attachment 753799
View attachment 753797
View attachment 753800
and then we have it with light shinning through it.View attachment 753801
View attachment 753819

 

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[oakhunter27]

we find these rocks all the time and I was wondering if anyone could id them.<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=753799"/>
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=753797"/>
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=753800"/>
and then we have it with light shinning through it.<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=753801"/>
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=753819"/>

looks like limestone limestone has a lot of crystal silica a lot of flint and chert in it

 

[rock]

Its not chert but a type of quartz. Quartz does get crystals tiny and large.

 

[oakhunter27]

Its not chert but a type of quartz. Quartz does get crystals tiny and large.

what I was trying to say is chert and Flint. have a lot of silica and crystal quartz in it limestone in Flint go hand in hand it has a lot of crystal quartz in it too limestone that is