My
periodic table poster
is now available!
Arrowhead.
I'm guessing this arrowhead is flint, a form of quartz, but that's just a guess.
Source:
Nick Mann
Contributor:
Nick Mann
Acquired:
24 March, 2009
Text Updated:
24 March, 2009
Price:
Donated
Size:
1.5"
Composition:
Si
O
2