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