Crystal Crag's namesake-...

Crystal Crag's namesake- fatty piece of quartz atop the crystal section on the North Arete- 31 July, 2004


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chskier - Aug 5, 2004 12:28 am - Voted 10/10


Wow. I'm not an expert on the geology of that area but this image sure makes it look like this stone is calcium carbonate or crystalized calcium, i.e., marble. There are quite a few white marble deposites through out the Sierra Nevada but I can't say that I have ever heard that Crystal Crag is one of them. Is this thing really quartz?


gordonye - Aug 10, 2004 6:40 pm - Voted 10/10

Re: Geology

Quartzite can look similar to white marble but it's usually harder and more translucent. This rock on Crystal Crag is quartzite, not marble.


Diggler - Aug 12, 2004 9:32 pm - Hasn't voted

Re: Geology

Sure thing, JD- thought I'd give people a preview of one of the cool things on this route!

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