Thread: Rock for ID?
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Old 21st October 2018
Jim Ford Jim Ford is offline
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Re: Rock for ID?

Quote:
Originally Posted by Phill D View Post
It will be interesting to know when you get someone who can be sure but it doesn't look like the 6 point angular nature of the quartz crystals I've seen before. Did you get a sample? if so then try scratching it with a knife. If it's quartz it wont scratch as it's harder than the knife blade.
The quartz is a amorphous form, rather than crystalline. Almost all the quartz I've come across is amorphous eg. the flint we have in Hertfordshire.

Jim
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