Follow-up

[grrbrts]

Same Triangular Point, posted 02/02/08. Unlike the cleaned and scanned image, this is a picture of it, as found within the creek. It's matrix is adhered to it. This type of matter is very hardened and so for, there is no chemical that can remove it safely, unlike Polident, that can remove a black color sediment commonly found about these parts. CLR can remove Calcine deposits, but must be used sparingly, in that the stone could become Bleached.

Respectfully,
EROHED

 

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[Pepper2004]

Nice. I think I would leave it as is.