Below is a sample of the rock outcrop shown on the NG Site page. The sample is darker than most monitors display, however these photos are lightened to show detail. The rock appears to be some form of quartzite. It is quite hard - a chisel broke in the collection of the sample.
Any opinions on origin or formation will be appreciated.
For more information contact research associate James D. Byous at
Close-up photos of Rock Sample From NG Stream
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