Jansen Lyons
6/30/2017 8:26:39 AM |
Interesting fusion crust, I've never seen yellow or reddish before. Cheers! |
Graham
6/30/2017 5:03:39 AM |
The red/brown is not caliche...if that is what you ask about...just soil and cleans off quite easily. The yellowish area could be remnant fusion crust...I have found areas on the flat outer areas on other pieces that seem to have that and cannot be cleaned. Also seen it on obvious outer surfaces on very large samples.
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Denis Gourgues
6/30/2017 1:57:13 AM |
This caliche slow process in the time ... It can be removed ? its possible.......? |
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