Are these Manganese nodules?

[BurntBear]

They sound like metal when they touch. The largest one has what looks like Quartzite growing on it.

 

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[mamabear]

Kind of looks like hematite. Is it heavy?

 

[prospect007]

try mindat, you will need hardness, streak test, ect....... very good site to help id rocks.

 

[BurntBear]

Kind of looks like hematite. Is it heavy?

Yes, they are heavy.

Bond - I use Mindat frequently. Great site!

 

[Brian T. Booth]

They sound like metal when they touch. The largest one has what looks like Quartzite growing on it. <img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=1036593"/> <img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=1036594"/> <img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=1036595"/>

It might be hematite but I think it's Goethite. A iron hydroxide. Great specimen.