Wordless Wednesday – Any geologists around?

by Deb on March 28, 2012

Enjoy this article? Subscribe to the weekly newsletter to hear about them all. Or grab my RSS feed

Tagged as: rocks

{ 5 comments }

alexander March 28, 2012 at 7:43 am

Porphyry, its full of potasium rich feldspar. Which was the stuff that broke in to squareish bits. The silverly grey stuff could be hemetite or Moly, if it makes a brown streak on a ceramic surface its hemeite. If a siliver streak and very soft, Moly.

Deb March 28, 2012 at 8:48 am: Thank you, I’ll try the streaks with my kids to see what it is.
Is the whole chunk porphyry or is the quartz a later intrusion? At least now I know what part of the map we are on.

sannah March 28, 2012 at 9:04 am

The tiny bit of Geology I did at uni isn’t any help I’m afraid, but it is a really fabulous rock – my boys love rocks, and would have been so stoked to find something like that. What a wonderful find for your little ones!!
sannah´s latest amazing offering ..Wordless Wednesday – Baking

Tamara March 28, 2012 at 4:04 pm